MCP3204, 3208 Datasheet by Microchip Technology

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Q ‘MICROCHIP MCP3204/ 3208
© 2008 Microchip Technology Inc. DS21298E-page 1
MCP3204/3208
Features
12-bit resolution
± 1 LSB max DNL
± 1 LSB max INL (MCP3204/3208-B)
± 2 LSB max INL (MCP3204/3208-C)
4 (MCP3204) or 8 (MCP3208) input channels
Analog inputs programmable as single-ended or
pseudo-differential pairs
On-chip sample and hold
SPI serial interface (modes 0,0 and 1,1)
Single supply operation: 2.7V - 5.5V
100 ksps max. sampling rate at VDD = 5V
50 ksps max. sampling rate at VDD = 2.7V
Low power CMOS technology:
- 500 nA typical standby current, 2 µA max.
- 400 µA max. active current at 5V
Industrial temp range: -40°C to +85°C
Available in PDIP, SOIC and TSSOP packages
Applications
Sensor Interface
Process Control
Data Acquisition
Battery Operated Systems
Functional Block Diagram
Description
The Microchip Technology Inc. MCP3204/3208
devices are successive approximation 12-bit Analog-
to-Digital (A/D) Converters with on-board sample and
hold circuitry. The MCP3204 is programmable to
provide two pseudo-differential input pairs or four
single-ended inputs. The MCP3208 is programmable
to provide four pseudo-differential input pairs or eight
single-ended inputs. Differential Nonlinearity (DNL) is
specified at ±1 LSB, while Integral Nonlinearity (INL) is
offered in ±1 LSB (MCP3204/3208-B) and ±2 LSB
(MCP3204/3208-C) versions.
Communication with the devices is accomplished using
a simple serial interface compatible with the SPI
protocol. The devices are capable of conversion rates
of up to 100 ksps. The MCP3204/3208 devices operate
over a broad voltage range (2.7V - 5.5V). Low current
design permits operation with typical standby and
active currents of only 500 nA and 320 µA,
respectively. The MCP3204 is offered in 14-pin PDIP,
150 mil SOIC and TSSOP packages. The MCP3208 is
offered in 16-pin PDIP and SOIC packages.
Package Types
Comparator
Sample
and
Hold
12-Bit SAR
DAC
Control Logic
CS/SHDN
VREF
VSS
VDD
CLK DOUT
Shift
Register
CH0
Channel
Mux
Input
CH1
CH7*
* Note: Channels 5-7 available on MCP3208 Only
DIN
VDD
CLK
DOUT
MCP3204
1
2
3
4
14
13
12
11
10
9
8
5
6
7
VREF
DIN
CH0
CH1
CH2
CH3
CS/SHDN
DGND
AGND
NC
VDD
CLK
DOUT
MCP3208
1
2
3
4
16
15
14
13
12
11
10
9
5
6
7
8
VREF
DIN
CS/SHDN
DGND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
NC
AGND
PDIP, SOIC, TSSOP
PDIP, SOIC
2.7V 4-Channel/8-Channel 12-Bit A/D Converters
with SPI Serial Interface
TA fSAMPLE fCLK ‘fSAMPLE pseudordxfferemial Mode
MCP3204/3208
DS21298E-page 2 © 2008 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
VDD...................................................................................7.0V
All inputs and outputs w.r.t. VSS ............... -0.6V to VDD +0.6V
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied ................-65°C to +125°C
Soldering temperature of leads (10 seconds) .............+300°C
ESD protection on all pins.............................................> 4 kV
†Notice: Stresses above those listed under "Maximum
Ratings" may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operation listings of this specification is not implied. Exposure
to maximum rating conditions for extended periods may affect
device reliability.
ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VSS = 0V, VREF = 5V,
TA = -40°C to +85°C,fSAMPLE = 100 ksps and fCLK = 20*fSAMPLE
Parameters Sym Min Typ Max Units Conditions
Conversion Rate
Conversion Time tCONV 12 clock
cycles
Analog Input Sample Time tSAMPLE 1.5 clock
cycles
Throughput Rate fSAMPLE
100
50
ksps
ksps
VDD = VREF = 5V
VDD = VREF = 2.7V
DC Accuracy
Resolution 12 bits
Integral Nonlinearity INL
±0.75
±1.0
±1
±2
LSB MCP3204/3208-B
MCP3204/3208-C
Differential Nonlinearity DNL ±0.5 ±1 LSB No missing codes
over-temperature
Offset Error ±1.25 ±3 LSB
Gain Error ±1.25 ±5 LSB
Dynamic Performance
Total Harmonic Distortion -82 dB VIN = 0.1V to 4.9V@1 kHz
Signal to Noise and Distortion
(SINAD)
—72 — dBV
IN = 0.1V to 4.9V@1 kHz
Spurious Free Dynamic
Range
—86 — dBV
IN = 0.1V to 4.9V@1 kHz
Reference Input
Voltage Range 0.25 VDD VNote 2
Current Drain
100
0.001
150
3.0
µA
µA CS = VDD = 5V
Analog Inputs
Input Voltage Range for CH0-
CH7 in Single-Ended Mode
VSS —V
REF V
Input Voltage Range for IN+ in
pseudo-differential Mode
IN- — VREF+IN-
Note 1: This parameter is established by characterization and not 100% tested.
2: See graphs that relate linearity performance to VREF levels.
3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity
performance, particularly at elevated temperatures. See Section 6.2 “Maintaining Minimum Clock
Speed”, “Maintaining Minimum Clock Speed”, for more information.
fSAMPLE fCLK ‘fSAMPLE
© 2008 Microchip Technology Inc. DS21298E-page 3
MCP3204/3208
Input Voltage Range for IN- in
pseudo-differential Mode
VSS-100 — VSS+100 mV
Leakage Current 0.001 ±1 µA
Switch Resistance 1000 See Figure 4-1
Sample Capacitor 20 pF See Figure 4-1
Digital Input/Output
Data Coding Format Straight Binary
High Level Input Voltage VIH 0.7 VDD ——V
Low Level Input Voltage VIL 0.3 VDD V
High Level Output Voltage VOH 4.1 V IOH = -1 mA, VDD = 4.5V
Low Level Output Voltage VOL —— 0.4 VI
OL = 1 mA, VDD = 4.5V
Input Leakage Current ILI -10 10 µA VIN = VSS or VDD
Output Leakage Current ILO -10 10 µA VOUT = VSS or VDD
Pin Capacitance
(All Inputs/Outputs)
CIN,COUT —— 10pFV
DD = 5.0V (Note 1)
TA = 25°C, f = 1 MHz
Timing Parameters
Clock Frequency fCLK
2.0
1.0
MHz
MHz
VDD = 5V (Note 3)
VDD = 2.7V (Note 3)
Clock High Time tHI 250 — ns
Clock Low Time tLO 250 — ns
CS Fall To First Rising CLK
Edge
tSUCS 100 — ns
Data Input Setup Time tSU 50 — ns
Data Input Hold Time tHD 50 — ns
CLK Fall To Output Data Valid tDO 200 ns See Figures 1-2 and 1-3
CLK Fall To Output Enable tEN 200 ns See Figures 1-2 and 1-3
CS Rise To Output Disable tDIS 100 ns See Figures 1-2 and 1-3
CS Disable Time tCSH 500 — ns
DOUT Rise Time tR 100 ns See Figures 1-2 and 1-3 (Note 1)
DOUT Fall Time tF 100 ns See Figures 1-2 and 1-3 (Note 1)
Power Requirements
Operating Voltage VDD 2.7 — 5.5 V
Operating Current IDD
320
225
400
µA VDD=VREF = 5V, DOUT unloaded
VDD=VREF = 2.7V, DOUT unloaded
Standby Current IDDS —0.5 2.0 µACS = VDD = 5.0V
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VSS = 0V, VREF = 5V,
TA = -40°C to +85°C,fSAMPLE = 100 ksps and fCLK = 20*fSAMPLE
Parameters Sym Min Typ Max Units Conditions
Note 1: This parameter is established by characterization and not 100% tested.
2: See graphs that relate linearity performance to VREF levels.
3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity
performance, particularly at elevated temperatures. See Section 6.2 “Maintaining Minimum Clock
Speed”, “Maintaining Minimum Clock Speed”, for more information.
MCP3204/3208
DS21298E-page 4 © 2008 Microchip Technology Inc.
TEMPERATURE CHARACTERISTICS
FIGURE 1-1: Serial Interface Timing.
Electrical Specifications: Unless otherwise indicated, VDD = 5V, VSS = 0V, VREF = 5V
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range TA-40 +125 °C
Operating Temperature Range TA-40 +125 °C
Storage Temperature Range TA-65 +150 °C
Thermal Package Resistances
Thermal Resistance, 14L-PDIP θJA —70°C/W
Thermal Resistance, 14L-SOIC θJA 95.3 — °C/W
Thermal Resistance, 14L-TSSOP θJA —100°C/W
Thermal Resistance, 16L-PDIP θJA —70°C/W
Thermal Resistance, 16L-SOIC θJA 86.1 — °C/W
CS
CLK
DIN MSB IN
tSU tHD
tSUCS
tCSH
tHI tLO
DOUT
tEN
tDO tRtF
LSB
MSB OUT
tDIS
Null Bit
© 2008 Microchip Technology Inc. DS21298E-page 5
MCP3204/3208
FIGURE 1-2: Load Circuit for tR, tF
, tDO.
FIGURE 1-3: Load circuit for tDIS and tEN.
Tes t P o i n t
1.4V
DOUT
3k
CL = 100 pF
DOUT
tR
Voltage Waveforms for tR, tF
CLK
DOUT
tDO
Voltage Waveforms for tDO
tF
VOH
VOL
90%
10%
*Waveform 1 is for an output with internal
conditions such that the output is high,
unless disabled by the output control.
Waveform 2 is for an output with internal
conditions such that the output is low,
unless disabled by the output control.
Tes t P o i n t
DOUT
3k
100 pF
t
DIS
Waveform 2
t
DIS
Waveform 1
CS
CLK
DOUT
tEN
12
B11
Voltage Waveforms for tEN
tEN Waveform
VDD
VDD/2
VSS
34
Voltage Waveforms for tDIS
DOUT
DOUT
CS VIH
TDIS
Waveform 1*
Waveform 2
MCP3204/3208
DS21298E-page 6 © 2008 Microchip Technology Inc.
NOTES:
© 2008 Microchip Technology Inc. DS21298E-page 7
MCP3204/3208
2.0 TYPICAL PERFORMANCE CHARACTERISTICS
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-1: Integral Nonlinearity (INL)
vs. Sample Rate.
FIGURE 2-2: Integral Nonlinearity (INL)
vs. VREF .
FIGURE 2-3: Integral Nonlinearity (INL)
vs. Code (Representative Part).
FIGURE 2-4: Integral Nonlinearity (INL)
vs. Sample Rate (VDD = 2.7V).
FIGURE 2-5: Integral Nonlinearity (INL)
vs. VREF (VDD = 2.7V).
FIGURE 2-6: Integral Nonlinearity (INL)
vs. Code (Representative Part, VDD = 2.7V).
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 255075100125150
Sample Rate (ksps)
INL (LSB)
Positive INL
Negative INL
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
012345
VREF (V)
INL (LSB)
Positive INL
Negative INL
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 512 1024 1536 2048 2560 3072 3584 4096
Digital Code
INL (LSB)
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
0 1020304050607080
Sample Rate (ksps)
INL (LSB)
Positive INL
Negative INL
VDD = VREF = 2.7 V
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
0.00.51.01.52.02.53.0
VREF (V)
INL (LSB)
Positive INL
Negative INL
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 512 1024 1536 2048 2560 3072 3584 4096
Digital Code
INL (LSB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
MCP3204/3208
DS21298E-page 8 © 2008 Microchip Technology Inc.
Note: Unless otherwise indicated, VDD = VREF = 5 V, VSS = 0 V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-7: Integral Nonlinearity (INL)
vs. Temperature.
FIGURE 2-8: Differential Nonlinearity
(DNL) vs. Sample Rate.
FIGURE 2-9: Differential Nonlinearity
(DNL) vs. VREF.
FIGURE 2-10: Integral Nonlinearity (INL)
vs. Temperature (VDD = 2.7V).
FIGURE 2-11: Differential Nonlinearity
(DNL) vs. Sample Rate (VDD = 2.7V).
FIGURE 2-12: Differential Nonlinearity
(DNL) vs. VREF (VDD = 2.7V).
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-50 -25 0 25 50 75 100
Temperature (°C)
INL (LSB)
Positive INL
Negative INL
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 255075100125150
Sample Rate (ksps)
DNL (LSB)
Positive DNL
Negative DNL
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
012345
VREF (V)
DNL (LSB)
Positive DNL
Negative DNL
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-50 -25 0 25 50 75 100
Temperature (°C)
INL (LSB)
Positive INL
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
Negative INL
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
0 1020304050607080
Sample Rate (ksps)
DNL (LSB)
Positive DNL
Negative DNL
VDD = VREF = 2.7 V
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
VREF (V)
DNL (LSB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
Positive DNL
Negative DNL
© 2008 Microchip Technology Inc. DS21298E-page 9
MCP3204/3208
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-13: Differential Nonlinearity
(DNL) vs. Code (Representative Part).
FIGURE 2-14: Differential Nonlinearity
(DNL) vs. Temperature.
FIGURE 2-15: Gain Error vs. VREF.
FIGURE 2-16: Differential Nonlinearity
(DNL) vs. Code (Representative Part,
VDD =2.7V).
FIGURE 2-17: Differential Nonlinearity
(DNL) vs. Temperature (VDD = 2.7V).
FIGURE 2-18: Offset Error vs. VREF.
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 512 1024 1536 2048 2560 3072 3584 4096
Digital Code
DNL (LSB)
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-50-250 255075100
Temperature (°C)
DNL (LSB)
Positive DNL
Negative DNL
-4
-3
-2
-1
0
1
2
3
4
012345
VREF (V)
Gain Error (LSB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE = 100 ksps
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 512 1024 1536 2048 2560 3072 3584 4096
Digital Code
DNL (LSB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-50 -25 0 25 50 75 100
Temperature (°C)
DNL (LSB)
Positive DNL
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
Negative DNL
0
2
4
6
8
10
12
14
16
18
20
012345
VREF (V)
Offset Error (LSB)
VDD = VREF = 2.7V
FSAMPLE = 50 ksps
VDD = VREF = 5V
FSAMPLE = 100 ksps
MCP3204/3208
DS21298E-page 10 © 2008 Microchip Technology Inc.
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-19: Gain Error vs. Temperature.
FIGURE 2-20: Signal-to-Noise (SNR) vs.
Input Frequency.
FIGURE 2-21: Total Harmonic Distortion
(THD) vs. Input Frequency.
FIGURE 2-22: Offset Error vs.
Temperature.
FIGURE 2-23: Signal-to-Noise and
Distortion (SINAD) vs. Input Frequency.
FIGURE 2-24: Signal-to-Noise and
Distortion (SINAD) vs. Input Signal Level.
-1.8
-1.6
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
-50 -25 0 25 50 75 100
Temperature (°C)
Gain Error (LSB)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
0
10
20
30
40
50
60
70
80
90
100
110100
Input Frequency (kHz)
SNR (dB)
VDD = VREF = 2.7V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE = 100 ksps
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
110100
Input Frequency (kHz)
THD (dB)
VDD = VREF = 5V
FSAMPLE = 100 ksps
VDD = VREF = 2.7V
FSAMPLE = 50 ksps
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-50 -25 0 25 50 75 100
Temperature (°C)
Offset Error (LSB)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
0
10
20
30
40
50
60
70
80
90
100
110100
Input Frequency (kHz)
SFDR (dB)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
0
10
20
30
40
50
60
70
80
-40 -35 -30 -25 -20 -15 -10 -5 0
Input Signal Level (dB)
SINAD (dB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE = 100 ksps
© 2008 Microchip Technology Inc. DS21298E-page 11
MCP3204/3208
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-25: Effective Number of Bits
(ENOB) vs. VREF
.
FIGURE 2-26: Spurious Free Dynamic
Range (SFDR) vs. Input Frequency.
FIGURE 2-27: Frequency Spectrum of
10 kHz input (Representative Part).
FIGURE 2-28: Effective Number of Bits
(ENOB) vs. Input Frequency.
FIGURE 2-29: Power Supply Rejection
(PSR) vs. Ripple Frequency.
FIGURE 2-30: Frequency Spectrum of
1 kHz input (Representative Part, VDD = 2.7V).
9.00
9.25
9.50
9.75
10.00
10.25
10.50
10.75
11.00
11.25
11.50
11.75
12.00
0.00.51.01.52.02.53.03.54.04.55.0
VREF (V)
ENOB (rms)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE =100 ksps
0
10
20
30
40
50
60
70
80
90
100
110100
Input Frequency (kHz)
SFDR (dB)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0 10000 20000 30000 40000 50000
Frequency (Hz)
Amplitude (dB)
VDD = VREF = 5 V
FSAMPLE = 100 ksps
FINPUT = 9.985 kHz
4096 points
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
110100
Input Frequency (kHz)
ENOB (rms)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
VDD = VREF = 5 V
FSAMPLE = 100 ksps
-80
-70
-60
-50
-40
-30
-20
-10
0
1 10 100 1000 10000
Ripple Frequency (kHz)
Power Supply Rejection (dB)
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0 5000 10000 15000 20000 25000
Frequency (Hz)
Amplitude (dB)
VDD = VREF = 2.7 V
FSAMPLE = 50 ksps
FINPUT = 998.76 Hz
4096 points
MCP3204/3208
DS21298E-page 12 © 2008 Microchip Technology Inc.
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-31: IDD vs. VDD.
FIGURE 2-32: IDD vs. Clock Frequency.
FIGURE 2-33: IDD vs. Temperature.
FIGURE 2-34: IREF vs. VDD.
FIGURE 2-35: IREF vs. Clock Frequency.
FIGURE 2-36: IREF vs. Temperature.
0
50
100
150
200
250
300
350
400
450
500
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
IDD (µA)
VREF = VDD
All points at FCLK = 2 MHz, except
at VREF = VDD = 2.5 V, FCLK = 1 MHz
0
50
100
150
200
250
300
350
400
10 100 1000 10000
Clock Frequency (kHz)
IDD (µA)
VDD = VREF = 5 V
VDD = VREF = 2.7 V
0
50
100
150
200
250
300
350
400
-50 -25 0 25 50 75 100
Temperature (°C)
IDD (µA)
VDD = VREF = 5 V
FCLK = 2 MHz
VDD = VREF = 2.7 V
FCLK = 1 MHz
0
10
20
30
40
50
60
70
80
90
100
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
IREF (µA)
VREF = VDD
All points at FCLK = 2 MHz except
at VREF = VDD = 2.5 V, FCLK = 1 MHz
0
10
20
30
40
50
60
70
80
90
100
10 100 1000 10000
Clock Frequency (kHz)
IREF (µA)
VDD = VREF = 5 V
VDD = VREF = 2.7 V
0
10
20
30
40
50
60
70
80
90
100
-50-250 255075100
Temperature (°C)
IREF (µA)
VDD = VREF = 5 V
FCLK = 2 MHz
VDD = VREF = 2.7 V
FCLK = 1 MHz
© 2008 Microchip Technology Inc. DS21298E-page 13
MCP3204/3208
Note: Unless otherwise indicated, VDD = VREF = 5V, VSS = 0V, fSAMPLE = 100 ksps, fCLK = 20* fSAMPLE, TA = +25°C.
FIGURE 2-37: IDDS vs. VDD.
FIGURE 2-38: IDDS vs. Temperature.
FIGURE 2-39: Analog Input Leakage
Current vs. Temperature.
0
10
20
30
40
50
60
70
80
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
IDDS (pA)
VREF = CS = VDD
0.01
0.10
1.00
10.00
100.00
-50-250 255075100
Temperature (°C)
IDDS (nA)
VDD = VREF = CS = 5 V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-50-250 255075100
Temperature (°C)
Analog Input Leakage (nA)
VDD = VREF = 5 V
FCLK = 2 MHz
MCP3204/3208
DS21298E-page 14 © 2008 Microchip Technology Inc.
NOTES:
© 2008 Microchip Technology Inc. DS21298E-page 15
MCP3204/3208
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
3.1 Digital Ground (DGND)
Digital ground connection to internal digital circuitry.
3.2 Analog Ground (AGND)
Analog ground connection to internal analog circuitry.
3.3 Analog Inputs (CH0 - CH7)
Analog inputs for channels 0 - 7 for the multiplexed
inputs. Each pair of channels can be programmed to be
used as two independent channels in single-ended
mode or as a single pseudo-differential input, where
one channel is IN+ and one channel is IN. See
Section 4.1 “Analog Inputs”, “Analog Inputs”, and
Section 5.0 “Serial communications”, “Serial Com-
munications”, for information on programming the
channel configuration.
3.4 Serial Clock (CLK)
The SPI clock pin is used to initiate a conversion and
clock out each bit of the conversion as it takes place.
See Section 6.2 “Maintaining Minimum Clock
Speed”, “Maintaining Minimum Clock Speed”, for con-
straints on clock speed.
3.5 Serial Data Input (DIN)
The SPI port serial data input pin is used to load
channel configuration data into the device.
3.6 Serial Data Output (DOUT)
The SPI serial data output pin is used to shift out the
results of the A/D conversion. Data will always change
on the falling edge of each clock as the conversion
takes place.
3.7 Chip Select/Shutdown (CS/SHDN)
The CS/SHDN pin is used to initiate communication
with the device when pulled low and will end a
conversion and put the device in low power standby
when pulled high. The CS/SHDN pin must be pulled
high between conversions.
TABLE 3-1: PIN FUNCTION TABLE
MCP3204 MCP3208
Symbol Definition
PDIP, SOIC,
TSSOP PDIP, SOIC
1 1 CH0 Analog Input
2 2 CH1 Analog Input
3 3 CH2 Analog Input
4 4 CH3 Analog Input
5 CH4 Analog Input
6 CH5 Analog Input
7 CH6 Analog Input
8 CH7 Analog Input
7 9 DGND Digital Ground
810CS
/SHDN Chip Select/Shutdown Input
911D
IN Serial Data In
10 12 DOUT Serial Data Out
11 13 CLK Serial Clock
12 14 AGND Analog Ground
13 15 VREF Reference Voltage Input
14 16 VDD +2.7V to 5.5V Power Supply
5, 6 NC No Connection
MCP3204/3208
DS21298E-page 16 © 2008 Microchip Technology Inc.
NOTES:
© 2008 Microchip Technology Inc. DS21298E-page 17
MCP3204/3208
4.0 DEVICE OPERATION
The MCP3204/3208 A/D converters employ a
conventional SAR architecture. With this architecture,
a sample is acquired on an internal sample/hold
capacitor for 1.5 clock cycles starting on the fourth
rising edge of the serial clock after the start bit has been
received. Following this sample time, the device uses
the collected charge on the internal sample/hold
capacitor to produce a serial 12-bit digital output code.
Conversion rates of 100 ksps are possible on the
MCP3204/3208. See Section 6.2 “Maintaining Mini-
mum Clock Speed”, “Maintaining Minimum Clock
Speed”, for information on minimum clock rates.
Communication with the device is accomplished using
a 4-wire SPI-compatible interface.
4.1 Analog Inputs
The MCP3204/3208 devices offer the choice of using
the analog input channels configured as single-ended
inputs or pseudo-differential pairs. The MCP3204 can
be configured to provide two pseudo-differential input
pairs or four single-ended inputs, while the MCP3208
can be configured to provide four pseudo-differential
input pairs or eight single-ended inputs. Configuration
is done as part of the serial command before each
conversion begins. When used in the pseudo-
differential mode, each channel pair (i.e., CH0 and
CH1, CH2 and CH3 etc.) is programmed to be the IN+
and IN- inputs as part of the command string transmit-
ted to the device. The IN+ input can range from IN- to
(VREF + IN-). The IN- input is limited to ±100 mV from
the VSS rail. The IN- input can be used to cancel small
signal common-mode noise which is present on both
the IN+ and IN- inputs.
When operating in the pseudo-differential mode, if the
voltage level of IN+ is equal to or less than IN-, the
resultant code will be 000h. If the voltage at IN+ is equal
to or greater than {[VREF + (IN-)] - 1 LSB}, then the
output code will be FFFh. If the voltage level at IN- is
more than 1 LSB below VSS, the voltage level at the
IN+ input will have to go below VSS to see the 000h
output code. Conversely, if IN- is more than 1 LSB
above VSS, then the FFFh code will not be seen unless
the IN+ input level goes above VREF level.
For the A/D converter to meet specification, the charge
holding capacitor (CSAMPLE) must be given enough
time to acquire a 12-bit accurate voltage level during
the 1.5 clock cycle sampling period. The analog input
model is shown in Figure 4-1.
This diagram illustrates that the source impedance (RS)
adds to the internal sampling switch (RSS) impedance,
directly effecting the time that is required to charge the
capacitor (CSAMPLE). Consequently, larger source
impedances increase the offset, gain and integral
linearity errors of the conversion (see Figure 4-2).
4.2 Reference Input
For each device in the family, the reference input
(VREF) determines the analog input voltage range. As
the reference input is reduced, the LSB size is reduced
accordingly. The theoretical digital output code pro-
duced by the A/D converter is a function of the analog
input signal and the reference input, as shown below.
EQUATION 4-1:
When using an external voltage reference device, the
system designer should always refer to the
manufacturer’s recommendations for circuit layout.
Any instability in the operation of the reference device
will have a direct effect on the operation of the A/D
converter.
Where:
VIN =analog input voltage
VREF = reference voltage
Digital Output Code 4096 VIN
×
VREF
---------------------------
=
MCP3204/3208
DS21298E-page 18 © 2008 Microchip Technology Inc.
FIGURE 4-1: Analog Input Model.
FIGURE 4-2: Maximum Clock Frequency
vs. Input resistance (RS) to maintain less than a
0.1 LSB deviation in INL from nominal
conditions.
CPIN
VA
RSS CHx
7pF
VT = 0.6V
VT = 0.6V ILEAKEAGE
Sampling
Switch
SS RS = 1 k
CSAMPLE
= DAC capacitance
VSS
VDD
= 20 pF
±1 nA
Legend
VA =Signal Source Ileakage =Leakage Current At The Pin
Due To Various Junctions
Rss =Source Impedance SS =Sampling switch
CHx =Input Channel Pad Rs=Sampling switch resistor
Cpin =Input Pin Capacitance Csample =Sample/hold capacitance
Vt=Threshold Voltage
0.0
0.5
1.0
1.5
2.0
2.5
100 1000 10000
Input Resistance (Ohms)
Clock Frequency (MHz)
VDD = 5 V
VDD = 2.7 V
Siflgle Siflgle
© 2008 Microchip Technology Inc. DS21298E-page 19
MCP3204/3208
5.0 SERIAL COMMUNICATIONS
Communication with the MCP3204/3208 devices is
accomplished using a standard SPI-compatible serial
interface. Initiating communication with either device is
done by bringing the CS line low (see Figure 5-1). If the
device was powered up with the CS pin low, it must be
brought high and back low to initiate communication.
The first clock received with CS low and DIN high will
constitute a start bit. The SGL/DIFF bit follows the start
bit and will determine if the conversion will be done
using single-ended or differential input mode. The next
three bits (D0, D1 and D2) are used to select the input
channel configuration. Ta bl e 5 -1 and Ta b le 5 - 2 show
the configuration bits for the MCP3204 and MCP3208,
respectively. The device will begin to sample the
analog input on the fourth rising edge of the clock after
the start bit has been received. The sample period will
end on the falling edge of the fifth clock following the
start bit.
Once the D0 bit is input, one more clock is required to
complete the sample and hold period (DIN is a “don’t
care” for this clock). On the falling edge of the next
clock, the device will output a low null bit. The next 12
clocks will output the result of the conversion with MSB
first, as shown in Figure 5-1. Data is always output from
the device on the falling edge of the clock. If all 12 data
bits have been transmitted and the device continues to
receive clocks while the CS is held low, the device will
output the conversion result LSB first, as shown in
Figure 5-2. If more clocks are provided to the device
while CS is still low (after the LSB first data has been
transmitted), the device will clock out zeros indefinitely.
If necessary, it is possible to bring CS low and clock in
leading zeros on the DIN line before the start bit. This is
often done when dealing with microcontroller-based
SPI ports that must send 8 bits at a time. Refer to
Section 6.1 “Using the MCP3204/3208 with Micro-
controller (MCU) SPI Ports” for more details on using
the MCP3204/3208 devices with hardware SPI ports.
TABLE 5-1: CONFIGURATION BITS FOR
THE MCP3204
TABLE 5-2: CONFIGURATION BITS FOR
THE MCP3208
Control Bit
Selections Input
Configuration Channel
Selection
Single/
Diff D2* D1 D0
1 X 0 0 single-ended CH0
1 X 0 1 single-ended CH1
1 X 1 0 single-ended CH2
1 X 1 1 single-ended CH3
0 X 0 0 differential CH0 = IN+
CH1 = IN-
0 X 0 1 differential CH0 = IN-
CH1 = IN+
0 X 1 0 differential CH2 = IN+
CH3 = IN-
0 X 1 1 differential CH2 = IN-
CH3 = IN+
* D2 is a “don’t care” for MCP3204
Control Bit
Selections Input
Configuration Channel
Selection
Single
/Diff D2 D1 D0
1 0 0 0 single-ended CH0
1 0 0 1 single-ended CH1
1 0 1 0 single-ended CH2
1 0 1 1 single-ended CH3
1 1 0 0 single-ended CH4
1 1 0 1 single-ended CH5
1 1 1 0 single-ended CH6
1 1 1 1 single-ended CH7
0 0 0 0 differential CH0 = IN+
CH1 = IN-
0 0 0 1 differential CH0 = IN-
CH1 = IN+
0 0 1 0 differential CH2 = IN+
CH3 = IN-
0 0 1 1 differential CH2 = IN-
CH3 = IN+
0 1 0 0 differential CH4 = IN+
CH5 = IN-
0 1 0 1 differential CH4 = IN-
CH5 = IN+
0 1 1 0 differential CH6 = IN+
CH7 = IN-
0 1 1 1 differential CH6 = IN-
CH7 = IN+
IWII — I% SGL/
MCP3204/3208
DS21298E-page 20 © 2008 Microchip Technology Inc.
FIGURE 5-1: Communication with the MCP3204 or MCP3208.
FIGURE 5-2: Communication with MCP3204 or MCP3208 in LSB First Format.
CS
CLK
DIN
DOUT
D1D2 D0
HI-Z
Don’t Care
Null
Bit B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0*HI-Z
tSAMPLE
tCONV
SGL/
DIFF
Start
tCYC
tCSH
tCYC
D2
SGL/
DIFF
Start
* After completing the data transfer, if further clocks are applied with CS low, the A/D converter will output LSB
first data, followed by zeros indefinitely (see Figure 5-2 below).
** tDATA: during this time, the bias current and the comparator power down while the reference input becomes
a high impedance node, leaving the CLK running to clock out the LSB-first data or zeros.
tDATA **
tSUCS
Null
Bit B11B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10B11
CS
CLK
DOUT
HI-Z HI-Z
(MSB)
tCONV tDATA **
Power Down
tSAMPLE
Start
SGL/
DIFF
DIN
tCYC
tCSH
D0D1D2
* After completing the data transfer, if further clocks are applied with CS low, the A/D converter will output zeros
indefinitely.
** tDATA: During this time, the bias circuit and the comparator power down while the reference input becomes a
high impedance node, leaving the CLK running to clock out LSB first data or zeroes.
tSUCS
Don’t Care
*
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© 2008 Microchip Technology Inc. DS21298E-page 21
MCP3204/3208
6.0 APPLICATIONS INFORMATION
6.1 Using the MCP3204/3208 with
Microcontroller (MCU) SPI Ports
With most microcontroller SPI ports, it is required to
send groups of eight bits. It is also required that the
microcontroller SPI port be configured to clock out data
on the falling edge of clock and latch data in on the
rising edge. Because communication with the
MCP3204/3208 devices may not need multiples of
eight clocks, it will be necessary to provide more clocks
than are required. This is usually done by sending
‘leading zeros’ before the start bit. As an example,
Figure 6-1 and Figure 6-2 illustrate how the MCP3204/
3208 can be interfaced to a MCU with a hardware SPI
port. Figure 6-1 depicts the operation shown in SPI
Mode 0,0, which requires that the SCLK from the MCU
idles in the ‘low’ state, while Figure 6-2 shows the
similar case of SPI Mode 1,1, where the clock idles in
the ‘high’ state.
As is shown in Figure 6-1, the first byte transmitted to
the A/D converter contains five leading zeros before
the start bit. Arranging the leading zeros this way
allows the output 12 bits to fall in positions easily
manipulated by the MCU. The MSB is clocked out of
the A/D converter on the falling edge of clock number
12. Once the second eight clocks have been sent to the
device, the MCU’s receive buffer will contain three
unknown bits (the output is at high impedance for the
first two clocks), the null bit and the highest order four
bits of the conversion. Once the third byte has been
sent to the device, the receive register will contain the
lowest order eight bits of the conversion results.
Employing this method ensures simpler manipulation
of the converted data.
Figure 6-2 shows the same thing in SPI Mode 1,1,
which requires that the clock idles in the high state. As
with mode 0,0, the A/D converter outputs data on the
falling edge of the clock and the MCU latches data from
the A/D converter in on the rising edge of the clock.
FIGURE 6-1: SPI Communication using 8-bit segments (Mode 0,0: SCLK idles low).
12345678 910111213141516
CS
SCLK
DIN
X = “Don’t Care” Bits
17 18 19 20 21 22 23 24
DOUT
NULL
BIT B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
HI-Z
MCU latches data from A/D
Data is clocked out of A/D
converter on falling edges
converter on rising edges of SCLK
DO Don’t Care
SGL/
DIFF D1
D2
Start
00000
1XX XXX
DO XXXXX XXX
B7 B6 B5 B4 B3 B2 B1 B0
B11 B10 B9 B80
???????? ???
D1
D2
SGL/
DIFF
Start
Bit
(Null)
MCU Transmitted Data
(Aligned with falling
edge of clock)
MCU Received Data
(Aligned with rising
edge of clock)
X
Data stored into MCU receive
register after transmission of first
8 bits
Data stored into MCU receive
register after transmission of
second 8 bits
Data stored into MCU receive
register after transmission of last
8 bits
Don’t Care
000001 XX XXX
DO XXXXX XXX
B7 B6 B5 B4 B3 B2 B1 B0B11 B10 B9 B8
0
???????? ???
D1
D2
SGL/
DIFF
(Null)
X
23
B1
X
$L¥ilil¥$£$tiiti¢i W
MCP3204/3208
DS21298E-page 22 © 2008 Microchip Technology Inc.
FIGURE 6-2: SPI Communication using 8-bit segments (Mode 1,1: SCLK idles high).
6.2 Maintaining Minimum Clock Speed
When the MCP3204/3208 initiates the sample period,
charge is stored on the sample capacitor. When the
sample period is complete, the device converts one bit
for each clock that is received. It is important for the
user to note that a slow clock rate will allow charge to
bleed off the sample capacitor while the conversion is
taking place. At 85°C (worst case condition), the part
will maintain proper charge on the sample capacitor for
at least 1.2 ms after the sample period has ended. This
means that the time between the end of the sample
period and the time that all 12 data bits have been
clocked out must not exceed 1.2 ms (effective clock
frequency of 10 kHz). Failure to meet this criterion may
introduce linearity errors into the conversion outside
the rated specifications. It should be noted that during
the entire conversion cycle, the A/D converter does not
require a constant clock speed or duty cycle, as long as
all timing specifications are met.
6.3 Buffering/Filtering the Analog
Inputs
If the signal source for the A/D converter is not a low
impedance source, it will have to be buffered or inaccu-
rate conversion results may occur (see Figure 4-2). It is
also recommended that a filter be used to eliminate any
signals that may be aliased back into the conversion
results, as is illustrated in Figure 6-3, where an op amp
is used to drive the analog input of the MCP3204/3208.
This amplifier provides a low impedance source for the
converter input, and a low pass filter, which eliminates
unwanted high frequency noise.
Low-pass (anti-aliasing) filters can be designed using
Microchip’s free interactive FilterLab® software. Filter-
Lab will calculate capacitor and resistor values, as well
as determine the number of poles that are required for
the application. For more information on filtering
signals, see AN699, “Anti-Aliasing Analog Filters for
Data Acquisition Systems”.
1234 567 8 9101112131415 16
CS
SCLK
D
IN
X = “Don’t Care” Bits
17 18 19 20 21 22 23 24
D
OUT
DO Don’t Care
NULL
BIT B11 B10 B9
B8 B6 B5 B4 B3 B2 B1 B0
HI-Z
000001 XXXXX
DO
SGL/
DIFF
XXXXXXXX
B7 B6 B5 B4 B3 B2 B1 B0
B11 B10 B9 B8
0
???????? ???
MCU latches data from A/D converter
on rising edges of SCLK
Data is clocked out of A/D
converter on falling edges
D1
D2
SGL/
DIFF
Start
Bit
(Null)
D1
D2
Start
MCU Transmitted Data
(Aligned with falling
edge of clock)
MCU Received Data
(Aligned with rising
edge of clock)
B7
X
Data stored into MCU receive
register after transmission of first
8 bits
Data stored into MCU receive
register after transmission of
second 8 bits
Data stored into MCU receive
register after transmission of last
8 bits
DO
© 2008 Microchip Technology Inc. DS21298E-page 23
MCP3204/3208
FIGURE 6-3: The MCP601 Operational Amplifier is used to implement a second order anti-aliasing
filter for the signal being converted by the MCP3204.
6.4 Layout Considerations
When laying out a printed circuit board for use with
analog components, care should be taken to reduce
noise wherever possible. A bypass capacitor should
always be used with this device, placed as close as
possible to the device pin. A bypass capacitor value of
1 µF is recommended.
Digital and analog traces should be separated as much
as possible on the board, with no traces running
underneath the device or the bypass capacitor. Extra
precautions should be taken to keep traces with high
frequency signals (such as clock lines) as far as
possible from analog traces.
Use of an analog ground plane is recommended in
order to keep the ground potential the same for all
devices on the board. Providing VDD connections to
devices in a “star” configuration can also reduce noise
by eliminating return current paths and associated
errors (see Figure 6-4). For more information on layout
tips when using A/D converters, refer to AN688,
“Layout Tips for 12-Bit A/D converter Applications”.FIGURE 6-4: VDD traces arranged in a
‘Star’ configuration in order to reduce errors
caused by current return paths.
MCP3204
VDD
10 µF
IN-
IN+
-
+
VIN
C1
C2
VREF
4.096V
Reference
F
F
0.1 µF
MCP601
R1
R2
R3
R4
MCP1541
V
DD
Connection
Device 1
Device 2
Device 3
Device 4
MCP3204/3208
DS21298E-page 24 © 2008 Microchip Technology Inc.
6.5 Utilizing the Digital and Analog
Ground Pins
The MCP3204/3208 devices provide both digital and
analog ground connections to provide another means
of noise reduction. As shown in Figure 6-5, the analog
and digital circuitry is separated internal to the device.
This reduces noise from the digital portion of the device
being coupled into the analog portion of the device. The
two grounds are connected internally through the
substrate, which has a resistance of 5 -10.
If no ground plane is utilized, then both grounds must
be connected to VSS on the board. If a ground plane is
available, both digital and analog ground pins should
be connected to the analog ground plane. If both an
analog and a digital ground plane are available, both
the digital and the analog ground pins should be
connected to the analog ground plane. Following these
steps will reduce the amount of digital noise from the
rest of the board being coupled into the A/D converter.
FIGURE 6-5: Separation of Analog and
Digital Ground Pins.
MCP3204/08
Analog Ground Plane
DGND AGND
VDD
0.1 µF
Substrate
5 - 10
Digital Side
-SPI Interface
-Shift Register
-Control Logic
Analog Side
-Sample Cap
-Capacitor Array
-Comparator
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© 2008 Microchip Technology Inc. DS21298E-page 25
MCP3204/3208
7.0 PACKAGING INFORMATION
7.1 Package Marking Information
Legend: XX...X Customer-specific information
Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
*This package is Pb-free. The Pb-free JEDEC designator ( )
can be found on the outer packaging for this package.
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
3
e
3
e
14-Lead PDIP (300 mil) (MCP3204) Example:
14-Lead SOIC (150 mil) (MCP3204) Example:
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
YYWWNNN
XXXXXXXXXXX
YYWWNNN
MCP3204-B
I/P
0819256
XXXXXXXXXXX
MCP3204-B
0819256
XXXXXXXI/XXXX
XXXXXXXX
NNN
YYWW
14-Lead TSSOP (4.4mm)* (MCP3204) Example:
3204-C
256
0819
3
e
I/SL
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MCP3204/3208
DS21298E-page 26 © 2008 Microchip Technology Inc.
Package Marking Information (Continued)
16-Lead PDIP (300 mil) (MCP3208) Example:
16-Lead SOIC (150 mil) (MCP3208) Example:
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
YYWWNNN
XXXXXXXXXXXXX
YYWWNNN
MCP3208-BI/P
0819256
XXXXXXXXXXXXX
MCP3208-B
0819256
XXXXIXXXXXX
3
e
3
e
I/SL
J H‘WH‘WH‘WF‘WH‘WH‘WH‘W 5% HHHHHHHHHHHHLUJ , A ‘Wfi
© 2008 Microchip Technology Inc. DS21298E-page 27
MCP3204/3208
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 !"#$%!&'(!%&! %(%")%%%"
*$%+% %
, &  "-"%!"&"$ %!  "$ %!   %#". "
& "%-/0
1+21 & %#%! ))%!%% 
 3%& %!%4") '  %4$%%"%
%%255)))&&54
6% 7+8-
& 9&% 7 7: ;
7!&($ 7 
%  1+
%%  < < 
""44  0 , 0
1 %%  0 < <
!"%!"="% -  , ,0
""4="% -  0 >
:9%  ,0 0 0
%% 9 0 , 0
9"4 >  0
69"="% ( 0 ? 
9)9"="% (  > 
:)* 1 < < ,
N
E1
D
NOTE 1
123
E
c
eB
A2
L
A
A1
b1
be
  ) +01
? 1 HHHHHHH' UUUMUUU r WV ”\ $ AL NNNNN
MCP3204/3208
DS21298E-page 28 © 2008 Microchip Technology Inc.
!"!##$%&'!"(

 !"#$%!&'(!%&! %(%")%%%"
*$%+% %
, &  "-"%!"&"$ %!  "$ %!   %#"0&& "
& "%-/0
1+2 1 & %#%! ))%!%% 
-32 $& '! !)%!%%'$$&%!  
 3%& %!%4") '  %4$%%"%
%%255)))&&54
6% 99--
& 9&% 7 7: ;
7!&($ 7 
%  1+
:8%  < < 0
""44 0 < <
%"$$*   < 0
:="% - ?1+
""4="% - ,1+
:9%  >?01+
+&$@%A  0 < 0
3%9% 9  < 
3%% 9 -3
3% IB < >B
9"4  < 0
9"="% ( , < 0
"$% D0B < 0B
"$%1%%& E0B < 0B
NOTE 1
N
D
E
E1
123
b
e
A
A1
A2
L
L1
c
h
hα
β
φ
  ) +?01
14-Lead Plastic Small Outline (SL) - Narrow, 3.90 mm Body [SOIC] ——| ‘<— gx="" ‘eddddde="" t="" sm="" .1="" ududey="" 4»="" e="" x="" t="" l—="" l="" recommended="" land="" pattern="" units="" milumeters="" dimension="" limits="" mw="" \="" nom="" \="" max="" contact="" pitcn="" e="" 1="" 27="" 580="" contact="" pad="" spacing="" c="" 5="" 40="" contact="" pad="" widtn="" x="" c="" 60="" contact="" pad="" lengtn="" v="" 1="" 50="" distance="" between="" pads="" ex="" 0="" 67="" distance="" between="" pads="" g="" 3.90="" notes:="" 1.dimenstomng="" and="" (olerancmg="" per="" asme="" y14.5m="" bsc="" basic="" dimension.="" theoreticaiiy="" exaci="" value="" shown="" without="" tnierances.="" microcnip="" technology="" drawing="" no.="" canoes/a="">
© 2008 Microchip Technology Inc. DS21298E-page 29
MCP3204/3208
 3%& %!%4") '  %4$%%"%
%%255)))&&54
HHHHHHH L T UUUUU JLJWF 1, ? UJ
MCP3204/3208
DS21298E-page 30 © 2008 Microchip Technology Inc.
)*!*#+!"!)&)!!"

  !"#$%!&'(!%&! %(%")%%%"
 &  "-"%!"&"$ %!  "$ %!   %#"0&& "
, & "%-/0
1+2 1 & %#%! ))%!%% 
-32 $& '! !)%!%%'$$&%!  
 3%& %!%4") '  %4$%%"%
%%255)))&&54
6% 99--
& 9&% 7 7: ;
7!&($ 7 
%  ?01+
:8%  < < 
""44  >  0
%"$$  0 < 0
:="% - ?1+
""4="% - ,  0
""49%   0 0
3%9% 9 0 ? 0
3%% 9 -3
3% IB < >B
9"4  < 
9"="% (  < ,
NOTE 1
D
N
E
E1
12
e
b
c
A
A1
A2
L1 L
φ
  ) +>1
Wfififlfififlfl g}, \a ULUJLUJLUJLUJLUJLUJLJ 7 L‘ 17 ‘ \\ jfiwflm» Jr *1! l l l l
© 2008 Microchip Technology Inc. DS21298E-page 31
MCP3204/3208
,

 !"#$%!&'(!%&! %(%")%%%"
*$%+% %
, &  "-"%!"&"$ %!  "$ %!   %#". "
& "%-/0
1+2 1 & %#%! ))%!%% 
 3%& %!%4") '  %4$%%"%
%%255)))&&54
6% 7+8-
& 9&% 7 7: ;
7!&($ 7 ?
%  1+
%%  < < 
""44  0 , 0
1 %%  0 < <
!"%!"="% -  , ,0
""4="% -  0 >
:9%  ,0 00 0
%% 9 0 , 0
9"4 >  0
69"="% ( 0 ? 
9)9"="% (  > 
:)* 1 < < ,
N
E1
NOTE 1
D
12 3
A
A1 b1
be
L
A2
E
eB
c
  ) +1
NNNNN
MCP3204/3208
DS21298E-page 32 © 2008 Microchip Technology Inc.
,!"!##$%&'!"(

 !"#$%!&'(!%&! %(%")%%%"
*$%+% %
, &  "-"%!"&"$ %!  "$ %!   %#"0&& "
& "%-/0
1+2 1 & %#%! ))%!%% 
-32 $& '! !)%!%%'$$&%!  
 3%& %!%4") '  %4$%%"%
%%255)))&&54
6% 99--
& 9&% 7 7: ;
7!&($ 7 ?
%  1+
:8%  < < 0
""44 0 < <
%"$$*   < 0
:="% - ?1+
""4="% - ,1+
:9%  1+
+&$@%A  0 < 0
3%9% 9  < 
3%% 9 -3
3% IB < >B
9"4  < 0
9"="% ( , < 0
"$% D0B < 0B
"$%1%%& E0B < 0B
D
E
E1
N
NOTE 1
12
3
b
e
h
h
c
L
L1
A2
A
A1 β
φ
α
  ) +>1
16-Lead Plastic Small Outline (SL) - Narrow, 3.90 mm Body [SOIC] »‘lk Ikex C SlLK (3 / SCREEN O 7, E E E El D x RECOMMENDED LAND PATTERN Units MlLLlMETERS Dimension Limits MIN | NOM | MAX Contaci Pllch E ‘l 27 BSC Caniaci Pad Spacing c 5 40 Contaci Pad width x o 60 Contaci Pad Lengm v i 50 Distance Between Pads Gx o 67 Distance Belween Pads 9 3 90 Nules 1 Dimenslonlng and Iolerancmg per ASME V14 5M ESC Basic Dimension Theorelically exact value shown wllhcul lulerances Microchip Technology Drawing No 004721081;
© 2008 Microchip Technology Inc. DS21298E-page 33
MCP3204/3208
 3%& %!%4") '  %4$%%"%
%%255)))&&54
MCP3204/3208
DS21298E-page 34 © 2008 Microchip Technology Inc.
NOTES:
© 2008 Microchip Technology Inc. DS21298E-page 35
MCP3204/3208
APPENDIX A: REVISION HISTORY
Revision E (September 2008)
The following is the list of modifications:
1. Updated package outline drawings in
Section 7.0 “Packaging Information”.
Revision D (January 2007)
The following is the list of modifications:
1. Undocumented changes
Revision C (May 2002)
The following is the list of modifications:
1. Undocumented changes
Revision B (August 1999)
The following is the list of modifications:
1. Undocumented changes
Revision A (November 1998)
Initial release of this document.
MCP3204/3208
DS21298E-page 36 © 2008 Microchip Technology Inc.
NOTES:
PART NO. 41x >\< x="" 4'="">
© 2008 Microchip Technology Inc. DS21298E-page 37
MCP3204/3208
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO. –X X/XX
PackageGrade
Device
Device MCP3204: 4-Channel 12-Bit Serial A/D Converter
MCP3204T: 4-Channel 12-Bit Serial A/D Converter
(Tape and Reel)
MCP3208: 8-Channel 12-Bit Serial A/D Converter
MCP3208T: 8-Channel 12-Bit Serial A/D Converter
(Tape and Reel)
Grade: B = ±1 LSB INL
C=±2LSB INL
Temperature Range I = -40°C to +85°C (Industrial)
Package P = Plastic DIP (300 mil Body), 14-lead, 16-lead
SL = Plastic SOIC (150 mil Body), 14-lead, 16-lead
ST = Plastic TSSOP (4.4mm), 14-lead
Examples:
a) MCP3204-BI/P: ±1 LSB INL,
Industrial Temperature,
PDIP package.
b) MCP3204-BI/SL: ±1 LSB INL,
Industrial Temperature,
SOIC package.
c) MCP3204-CI/ST: ±2 LSB INL,
Industrial Temperature,
TSSOP package.
a) MCP3208-BI/P: ±1 LSB INL,
Industrial Temperature,
PDIP package.
b) MCP3208-BI/SL: ±1 LSB INL,
Industrial Temperature,
SOIC package.
c) MCP3208-CI/ST: ±2 LSB INL,
Industrial Temperature,
TSSOP package.
Temperature
Range
MCP3204/3208
DS21298E-page 38 © 2008 Microchip Technology Inc.
NOTES:
QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV = ISO/TS 1694922002 =
© 2008 Microchip Technology Inc. DS21298E-page 39
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
FilterLab, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL, SmartSensor and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM,
PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
Endurance, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2008, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Note the following details of the code protection feature on Microchip devices:
Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
Q ‘MICROCHIP
DS21298E-page 40 © 2008 Microchip Technology Inc.
AMERICAS
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
www.microchip.com
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
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Tel: 630-285-0071
Fax: 630-285-0075
Dallas
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Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
Kokomo
Kokomo, IN
Tel: 765-864-8360
Fax: 765-864-8387
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
ASIA/PACIFIC
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
ASIA/PACIFIC
India - Bangalore
Tel: 91-80-4182-8400
Fax: 91-80-4182-8422
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
EUROPE
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
WORLDWIDE SALES AND SERVICE
01/02/08

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