VCNL4040 Datasheet by Vishay Semiconductor Opto Division

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Fully Integrated Proximity and Ambient Light Sensor With
Infrared Emitter, I2C Interface, and Interrupt Function
LINKS TO ADDITIONAL RESOURCES
DESCRIPTION
VCNL4040 integrates a proximity sensor (PS), ambient
light sensor (ALS), and a high power IRED into one small
package. It incorporates photodiodes, amplifiers, and
analog to digital converting circuits into a single chip by
CMOS process. The 16-bit high resolution ALS offers
excellent sensing capabilities with sufficient selections to
fulfill most applications whether dark or high transparency
lens design. High and low interrupt thresholds can be
programmed for both ALS and PS, allowing the component
to use a minimal amount of the microcontrollers resources.
The proximity sensor features an intelligent cancellation
scheme, so that cross talk phenomenon is eliminated
effectively. To accelerate the PS response time, smart
persistence prevents the misjudgment of proximity sensing
but also keeps a fast response time. In active force mode, a
single measurement can be requested, allowing another
good approach for more design flexibility to fulfill different
kinds of applications with more power saving.
The patented FiltronTM technology achieves ambient light
spectral sensitivity closest to real human eye response and
offers the best background light cancellation capability
(including sunlight) without utilizing the microcontrollers’
resources. VCNL4040 provides an excellent temperature
compensation capability for keeping output stable under
various temperature configurations. ALS and PS functions
are easily set via the simple command format of I2C
(SMBus compatible) interface protocol. Operating voltage
ranges from 2.5 V to 3.6 V. VCNL4040 is packaged in a
lead (Pb)-free 8-pin molding package, which offers the best
market-proven reliability quality.
FEATURES
Package type: surface-mount
Dimensions (L x W x H in mm): 4.0 x 2.0 x 1.1
Integrated modules: infrared emitter (IRED),
ambient light sensor (ALS), proximity sensor
(PS), and signal conditioning IC
Operates ALS and PS in parallel structure
•Filtron
TM technology adoption for robust
background light cancellation
Temperature compensation: -40 °C to +85 °C
Low power consumption I2C (SMBus compatible)
interface
Floor life: 168 h, MSL 3, according to J-STD-020
Output type: I2C bus (ALS / PS)
Operation voltage: 2.5 V to 3.6 V
Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
PROXIMITY FUNCTION
Immunity to red glow (940 nm IRED)
Programmable IRED sink current
Intelligent cancellation to reduce cross talk phenomenon
Smart persistence scheme to reduce PS response time
Selectable for 12- / 16-bit PS output data
AMBIENT LIGHT FUNCTION
High accuracy of ALS ±10 %
Fluorescent light flicker immunity
Spectrum close to real human eye responses
Selectable maximum detection range (819 / 1638 / 3277 /
6553) lux with highest sensitivity 0.0125 lux/step
INTERRUPT
Programmable interrupt function for ALS and PS with
upper and lower thresholds
• Adjustable persistence to prevent false triggers for ALS
and PS
APPLICATIONS
Handheld device
Notebook, tablet PC
Consumer device
Industrial application
3
3
3
D
D
D
3
D
3D Models
Design Tools
Related
Documents
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Note
(1) Adjustable through I2C interface
Notes
(1) MOQ: minimum order quantity
(2) The interposers are necessary when the component needs to be brought closer to a cover glass and the customers mechanical stack up
does not allow for this with the standard height component (VCNL4040M3OE)
PRODUCT SUMMARY
PART
NUMBER
OPERATING
RANGE
(mm)
OPERATING
VOLTAGE
RANGE
(V)
I2C BUS
VOLTAGE
RANGE
(V)
IRED PULSE
CURRENT (1)
(mA)
AMBIENT
LIGHT
RANGE
(lx)
AMBIENT
LIGHT
RESOLUTION
(lx)
OUTPUT
CODE
ADC RESOLUTION
PROXIMITY /
AMBIENT LIGHT
VCNL4040 0 to 200 2.5 to 3.6 1.8 to 3.6 200 0.0125 to 6553 0.0125 16 bit, I2C 16 bit / 16 bit
ORDERING INFORMATION
ORDERING CODE PACKAGING VOLUME (1) REMARKS
VCNL4040M3OE
Tape and reel
MOQ: 2500 pcs 4.0 mm x 2.0 mm x 1.1 mm
VCNL4040M3OE-H3 (2)
MOQ: 1500 pcs 4.34 mm x 2.35 mm x 3.25 mm
VCNL4040M3OE-H5 (2) 4.34 mm x 2.35 mm x 3.65 mm
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT
Supply voltage VDD 2.5 3.6 V
Operation temperature range Tamb -40 +85 °C
Storage temperature range Tstg -40 +100 °C
RECOMMENDED OPERATING CONDITIONS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT
Supply voltage VDD 2.5 3.6 V
Operation temperature range Tamb -40 +85 °C
I2C bus operating frequency f(I2CCLK) 10 400 kHz
PIN DESCRIPTIONS
PIN ASSIGNMENT SYMBOL TYPE FUNCTION
1 GND I Ground
2 CATHODE I Cathode (sensor) connection
3V
DD I Power supply input
4ANODEIAnode for IRED
5 CATHODE I Cathode (LED) connection
6 INT O Interrupt pin
7 SDAT I / O (open drain) I2C data bus data input / output
8SCLKII
2C digital bus clock input
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BLOCK DIAGRAM
Notes
(1) Test condition: VDD = 3.3 V, temperature: 25 °C
(2) Maximum detection range to ambient light can be determined by ALS refresh time adjustment. Refer to table “ALS Resolution and Maximum
Detection Range”
(3) Based on IRED on / off duty ratio = 1/40, 1/80, 1/160, and 1/320
BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Supply voltage VDD 2.5 3.6 V
Supply current Excluded LED driving IDD 300 μA
Light condition = dark, VDD = 3.3 V IDD (SD) 0.2 μA
I2C supply voltage VPULL UP 1.8 3.6 V
ALS shut down ALS disable, PS enable IALSSD 200 μA
PS shut down ALS enable, PS disable IPSSD 260 μA
I2C signal input
Logic high VDD = 3.3 V VIH 1.55 V
Logic low VIL 0.4
Logic high VDD = 2.6 V VIH 1.4 V
Logic low VIL 0.4
Peak sensitivity wavelength of
ALS λp550 nm
Peak sensitivity wavelength of PS λpps 940 nm
Full ALS counts 16-bit resolution 65 535 steps
Full PS counts 12-bit / 16-bit resolution 4096 / 65 535 steps
ALS sensing tolerance White LED light source ± 10 %
Detectable
intensity
Minimum IT = 640 ms, 1 step (1)(2) 0.0125 lx
Maximum IT = 80 ms, 65 535 step (1)(2) 6553
ALS dark offset IT = 80 ms, normal sensitivity (1) 03steps
PS detection range Kodak white card 0 200 mm
Operating temperature range Tamb -40 +85 °C
Cathode (sensor) voltage 2.5 3.6 V
IRED driving current (3) 200 mA
GND
I
2
C bus logic
control
ALS
PD
PS
PD
LED driver
PD
buffer
LED_CATHODE
V
DD
SCLK
SDAT
INT
Anode
IRED
PD timing
controller
DSP
Oscilator
Temperature
compensation
Low pass filter
ALS
16-bits
data
buffer
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Fig. 1 - I2C Bus Timing Diagram
I2C BUS TIMING CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER SYMBOL STANDARD MODE FAST MODE UNIT
MIN. MAX. MIN. MAX.
Clock frequency f(SMBCLK) 10 100 10 400 kHz
Bus free time between start and stop condition t(BUF) 4.7 1.3 μs
Hold time after (repeated) start condition;
after this period, the first clock is generated t(HDSTA) 4.0 0.6 μs
Repeated start condition setup time t(SUSTA) 4.7 0.6 μs
Stop condition setup time t(SUSTO) 4.0 0.6 μs
Data hold time t(HDDAT) 3450 900 ns
Data setup time t(SUDAT) 250 100 ns
I2C clock (SCK) low period t(LOW) 4.7 1.3 μs
I2C clock (SCK) high period t(HIGH) 4.0 0.6 μs
Clock / data fall time t(F) 300 300 ns
Clock / data rise time t(R) 1000 300 ns
VIH
VIH
t(LOW)
VIL
t(R)
t(HDSTA)
t(BUF)
VIL
t(HDDAT)
t(F)
t(HIGH) t(SUSTA)
t(SUDAT)
t(SUSTO)
{{
P
Stop Condition
S
Star Condition
{{
PS
t(LOSEXT)
t(LOWMEXT)
t(LOWMEXT)
SCLK
ACK
SDA
ACK
Start Stop
t(LOWMEXT)
I2C bus
CLOCK
(SCLK)
I2C bus
DATA
(SDAT)
I2C bus
CLOCK
(SCLK)
I2C bus
DATA
(SDAT)
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PARAMETER TIMING INFORMATION
Fig. 2 - I2C Bus Timing for Sending Word Command Format
Fig. 3 - I2C Bus Timing for Receiving Word Command Format
W
SA6 SA5 SA4 SA3 SA2 SA1SA7
I2CBus Slave Address Byte
Start by
Master
ACK by
SA6 SA5 SA4 SA3 SA2 SA0
SA7
Command Code
SA1
ACK by
SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0
ACK by
SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0
Stop by
Master
ACK by
Data Byte Low Data Byte High
I2C bus
CLOCK
(SCLK)
I2C bus
DATA
(SDAT)
I2C bus
CLOCK
(SCLK)
I2C bus
DATA
(SDAT)
VCNL4040
VCNL4040
VCNL4040
VCNL4040
I2CBus
CLOCK
(SCLK)
I2CBus
DATA
(SDAT)
W
SA6 SA5 SA4 SA3 SA2 SA1SA7
I2CBus Slave Address Byte
Start by
Master
ACK by
SA6 SA5 SA4 SA3 SA2 SA0
SA7
Command Code
SA1
ACK by
SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0
Stop by
Master
ACK by
Master
Data Byte High
I2CBus
CLOCK
(SCLK)
I2CBus
DATA
(SDAT)
I2CBus
CLOCK
(SCLK)
I2CBus
DATA
(SDAT)
R
SA6 SA5 SA4 SA3 SA2
I2CBus Slave Address Byte
Start by
Master
ACK by
SA6 SA5 SA4 SA3 SA2 SA0
SA7
Data Byte Low
SA1
ACK by
Master
SA1
SA7
VCNL4040
VCNL4040
VCNL4040
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TYPICAL PERFORMANCE CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Fig. 4 - Normalized Spectral Response
Fig. 5 - Forward Current IF = f (VF)
Fig. 6 - ALS Refresh Time vs. Maximum Detection Range
Fig. 7 - IDD vs.Temperature
Fig. 8 - ALS View Angle
Fig. 9 - White Channel Spectral Response
10
100
1000
10000
0
10
20
30
40
50
60
70
80
90
100
400 500 600 700 800 900 1000
Axis Title
1st line
2nd line
2nd line
Normalized Output (%)
λ- Wavelength (nm)
2nd line
PS-CH
ALS-CH
10
100
1000
10000
0.1
100
1000
1.0 1.5 2.0 2.5 4.5
Axis Title
1st line
2nd line
2nd line
Forward Current (mA)
Forward Voltage (V)
5.0
10
1
DC current
Pulse current
4.03.53.0
10
100
1000
10000
0
10 000
20 000
30 000
40 000
50 000
60 000
70 000
0 2000 4000 6000 8000 10 000
Axis Title
1st line
2nd line
Step
1st line
Lux
2nd line
80 ms
160 ms
320 ms
640 ms
10
100
1000
10000
150
160
250
-40 20406080
Axis Title
1st line
2nd line
2nd line
IDD - Supply Current (A)
Tamb - Ambient Temperature (°C)
100
240
230
220
210
200
190
180
170
0-20
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-90 -60 -30 0 30 60 90
Axis Title
1st line
2nd line
1st line
2nd line
ALS View Angle
- Angular Displacement (°)
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
400 500 600 700 800 900 1000
Axis Title
1st line
2nd line
Normalized Output
1st line
Wavelength (nm)
2nd line
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Fig. 10 - IRED Profile
APPLICATION INFORMATION
Pin Connection with the Host
VCNL4040 integrates proximity sensor, ambient light Sensor, and IRED all together with I2C interface. It is very easy for the
baseband (CPU) to access PS and ALS output data via I2C interface without extra software algorithms. The hardware schematic
is shown in the following diagram.
Two additional capacitors in the circuit can be used for the following purposes: (1) the 0.1 μF capacitor near the VDD pin is used
for power supply noise rejection, (2) the 2.2 μF capacitor - connected to the anode - is used to prevent the IRED voltage from
instantly dropping when the IRED is turned on, and (3) 2.2 kΩ is suitable for the pull up resistor of I2C except for the 8.2 kΩ
applied on the INT pin.
Note
Cathode (LED) and cathode (sensor): pins need to be connected together externally
Fig. 11 - Hardware Pin Connection Diagram
1st line
2nd line
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-90 -60 -30 0 30 60 90
Axis Title
1st line
2nd line
Relative Radiant Intensity
Angle (deg)
0° 20°
40°
60°
80°
0.6
0.7
0.8
0.9
1.0
00.10.20.30.40.5
Radiant Intensity
Angle (deg)
INT INT
SCLK
8
7
3
5
1
0.1 μF
GND
SDAT
SCK
SDA
6
2.2 kΩ2.2 kΩ
VDD_LED
2.2 μF
8.2 kΩ
2
Cathode
(LED)
Anode 4
VCNL4040
Cathode
(sensor)
VDD
VPull_up
Baseband
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Digital Interface
VCNL4040 applies single slave address 0x60 (HEX) of 7-bit addressing following I2C protocol. As figure 12 shows, VCNL4040’s
I2C command format is simple for read and write operations between VCNL4040 and the host. The white sections indicate host
activity and the gray sections indicate VCNL4040’s acknowledgement of the host access activity. Write word and read word
protocol is suitable for accessing registers particularly for 16-bit data ALS and 12-bit / 16-bit PS data. Interrupt can be cleared
by reading data out from register: INT_Flag. All command codes should follow read word and write word protocols.
Fig. 12 - Write Word and Read Word Protocol
Function Description
VCNL4040 applies a 16-bit high resolution ALS that provides the best ambient light sensing capability down to 0.01 lux/step
which works well under a low transmittance lens design (dark lens). A flexible interrupt function of ALS (register: ALS_CONF)
is also supported. The INT signal will not be triggered by VCNL4040 if the ALS value is not over high INT threshold window level,
or lower than low INT threshold window level of ALS. VCNL4040 detects different light sources such as fluorescent light,
incandescent light, sunlight, and white LED with high accuracy ALS data output after detecting algorithm is implemented.
For proximity sensor function, VCNL4040 supports different kinds of mechanical designs to achieve the best proximity detection
performance for any color of object with more flexibility. The basic PS function settings, such as duty ratio, integration time,
interrupt, and PS enable / disable, and persistence, are handled by the register: PS_CONF1. Duty ratio controls the PS response
time. Integration time represents the duration of the energy being received. The interrupt is triggered when the PS detection
levels over the high threshold level setting (register: PS_THDH) or lower than low threshold (register: PS_THDL). If the interrupt
function is enabled, the host can react to the interrupt pin, instead of polling the PS data registers. The INT flag (register:
INT_Flag) indicates the type of interrupt that has been triggered, depending on the interrupt settings in the configuration
registers. PS persistence (PS_PERS) sets up the PS INT trigger conditions, defining the amount of consecutive hits required
before an interrupt event occurs. The intelligent cancellation level can be set on register: PS_CANC to reduce the cross talk
phenomenon.
VCNL4040 also supports an easy to use proximity detection logic mode, that triggers when the PS high threshold is exceeded
and automatically resets the interrupt pin when the proximity reading falls beneath the PS low threshold. This functionality can
be set in the register: PS_MS. A smart persistence is provided to be able to prevent false PS interrupt trigger events.
Descriptions of each of these parameters are shown in table 1.
S Slave address Wr A Command code A Data byte low A Data byte high A
17 811 1 8 1 8
P
11
Send byte write command to VCNL4040
1
Slave address
7
Wr A Command code AS Slave address Rd A Data byte low A Data byte high N P
11 8 11 7 11 8 1 8 1 1
S
Receive byte read data from VCNL4040
S = start condition
P = stop condition
A = acknowledge
N = not acknowledge
Host action
VCNL4040 acknowledge
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Note
All of reserved register are used for internal test. Please keep as default setting.
Command Register Format
VCNL4040 provides an 8-bit command register for ALS and PS controlling independently. The description of each command
format is shown in following tables.
TABLE 1 - COMMAND CODE AND REGISTER DESCRIPTION
COMMAND
CODE
DATE BYTE
LOW / HIGH
REGISTER
NAME R / W DEFAULT
VALUE FUNCTION DESCRIPTION
0x00 L ALS_CONF R / W 0x01 ALS integration time, persistence, interrupt, and function enable / disable
H Reserved R / W 0x00 Reserved
0x01 L ALS_THDH_L R / W 0x00 ALS high interrupt threshold LSB byte
H ALS_THDH_M R / W 0x00 ALS high interrupt threshold MSB byte
0x02 L ALS_THDL_L R / W 0x00 ALS low interrupt threshold LSB byte
H ALS_THDL_M R / W 0x00 ALS low interrupt threshold MSB byte
0x03 L PS_CONF1 R / W 0x01 PS duty ratio, integration time, persistence, and PS enable / disable
H PS_CONF2 R / W 0x00 PS output resolution selection, PS interrupt trigger method
0x04
L PS_CONF3 R / W 0x00 PS multi pulse, active force mode, sunlight immunity setting
H PS_MS R / W 0x00 White channel enable / disable, PS mode selection, PS protection setting,
and LED current selection
0x05 L PS_CANC_L R / W 0x00 PS cancellation level setting
H PS_CANC_M R / W 0x00 PS cancellation level setting
0x06 L PS_THDL_L R / W 0x00 PS low interrupt threshold setting LSB byte
H PS_THDL_M R / W 0x00 PS low interrupt threshold setting MSB byte
0x07 L PS_THDH_L R / W 0x00 PS high interrupt threshold setting LSB byte
H PS_THDH_M R / W 0x00 PS high interrupt threshold setting MSB byte
0x08 L PS_Data_L R 0x00 PS LSB output data
H PS_Data_M R 0x00 PS MSB output data
0x09 L ALS_Data_L R 0x00 ALS LSB output data
H ALS_Data_M R 0x00 ALS MSB output data
0x0A L White_Data_L R 0x00 White LSB output data
H White_Data_M R 0x00 White MSB output data
0x0B L Reserved R 0x00 Reserved
H INT_Flag R 0x00 ALS, PS interrupt flags
0x0C L ID_L R 0x86 Device ID LSB
H ID_M R 0x01 Device ID MSB
TABLE 2 - REGISTER: ALS_CONF DESCRIPTION
REGISTER NAME COMMAND CODE: 0x00_L (0x00 DATA BYTE LOW)
Command Bit76543210
REGISTER: ALS_CONF COMMAND CODE: 0x00_L (0x00 DATA BYTE LOW)
Command Bit Description
ALS_IT 7 : 6 (0 : 0) = 80 ms; (0 : 1) = 160 ms; (1 : 0) = 320 ms; (1 : 1) = 640 ms
ALS integration time setting, longer integration time has higher sensitivity
Reserved 5 : 4 Default = (0 : 0)
ALS_PERS 3 : 2 (0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 4, (1 : 1) = 8
ALS interrupt persistence setting
ALS_INT_EN 1 0 = ALS interrupt disable, 1 = ALS interrupt enable
ALS_SD 0 0 = ALS power on, 1 = ALS shut down, default = 1
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TABLE 3 - REGISTER: 00H_H DESCRIPTION
REGISTER: Reserved COMMAND CODE: 0x00_H (0x00 DATA BYTE HIGH)
Command Bit Description
Reserved 7 : 0 Default = (0 : 0 : 0 : 0 : 0 : 0 : 0 : 0)
TABLE 4 - REGISTER ALS_THDH_L AND ALS_THDH_M DESCRIPTION
COMMAND CODE: 0x01_L (0x01 DATA BYTE LOW) OR 0x01_H (0x01 DATA BYTE HIGH)
Register Bit Description
ALS_THDH_L 7 : 0 0x00 to 0xFF, ALS high interrupt threshold LSB byte
ALS_THDH_M 7 : 0 0x00 to 0xFF, ALS high interrupt threshold MSB byte
TABLE 5 - REGISTER: ALS_THDL_L AND ALS_THDL_M DESCRIPTION
COMMAND CODE: 0x02_L (0x02 DATA BYTE LOW) AND 0x02_H(0x02 DATA BYTE HIGH)
Register Bit Description
ALS_THDL_L 7 : 0 0x00 to 0xFF, ALS low interrupt threshold LSB byte
ALS_THDL_M 7 : 0 0x00 to 0xFF, ALS low interrupt threshold MSB byte
TABLE 6 - REGISTER: PS_CONF1 DESCRIPTION
REGISTER: PS_CONF1 COMMAND CODE: 0x03_L (0x03 DATA BYTE LOW)
Command Bit Description
PS_Duty 7 : 6 (0 : 0) = 1/40, (0 : 1) = 1/80, (1 : 0) = 1/160, (1 : 1) = 1/320
PS IRED on / off duty ratio setting
PS_PERS 5 : 4 (0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 3, (1 : 1) = 4
PS interrupt persistence setting
PS_ IT 3 : 1 (0 : 0 : 0) = 1T, (0 : 0 : 1) = 1.5T, (0 : 1 : 0) = 2T, (0 : 1 : 1) = 2.5T, (1 : 0 : 0) = 3T, (1 : 0 : 1) = 3.5T,
(1 : 1 : 0) = 4T, (1 : 1 : 1) = 8T, PS integration time setting
PS_SD 0 0 = PS power on, 1 = PS shut down, default = 1
TABLE 7 - REGISTER: PS_CONF2 DESCRIPTION
REGISTER: PS_CONF2 COMMAND CODE: 0x03_H (0x03 DATA BYTE HIGH)
Command Bit Description
Reserved 7 : 6 (0 : 0), reserved
Reserved 5 : 4 (0 : 0), reserved
PS_HD 3 0 = PS output is 12 bits; 1 = PS output is 16 bits
Reserved 2 Default = 0
PS_INT 1 : 0 (0 : 0) = interrupt disable, (0 : 1) = trigger when close, (1 : 0)= trigger when away,
(1 : 1)= trigger when close or away
TABLE 8 - REGISTER: PS_CONF3 DESCRIPTION
REGISTER: PS_CONF3 COMMAND CODE: 0x04_L (0x04 DATA BYTE LOW)
Command Bit Description
Reserved 7 0
PS_MPS 6 : 5 Proximity multi pulse numbers
(0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 4, (1 : 1) = 8 multi pulses
PS_SMART_PERS 4 0 = disable; 1 = enable PS smart persistence
PS_AF 3 0 = active force mode disable (normal mode), 1 = active force mode enable
PS_TRIG 2
0 = no PS active force mode trigger, 1 = trigger one time cycle
VCNL4040 output one cycle data every time host writes in ‘1’ to sensor.
The state returns to ‘0’ automatically.
Reserved 1 0
PS_SC_EN 0 PS sunlight cancel enable setting, 1 = sunlight cancellation function enable
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TABLE 9 - REGISTER: PS_MS DESCRIPTION
REGISTER: PS_MS COMMAND CODE: 0x04_H (0x04 DATA BYTE HIGH)
Command Bit Description
White_EN 7 0 = white channel enabled
1 = white channel disabled
PS_MS 6
0 = proximity normal operation with interrupt function
1 = proximity detection logic output mode enable
Reserved 5 : 3 ( 0 : 0 : 0 )
LED_I 2 : 0
(0 : 0 : 0) = 50 mA; (0 : 0 : 1) = 75 mA; (0 : 1 : 0) = 100 mA; (0 : 1 : 1) = 120 mA
(1 : 0 : 0) = 140 mA; (1 : 0 : 1) = 160 mA; (1 : 1 : 0) = 180 mA; (1 : 1 : 1) = 200 mA
LED current selection setting
TABLE 10 - REGISTER PS_CANC_L AND PS_CANC_M DESCRIPTION
COMMAND CODE: 0x05_L (0x05 DATA BYTE LOW) AND 0x05_H(0x05 DATA BYTE HIGH)
Register Bit Description
PS_CANC_L 7 : 0 0x00 to 0xFF, PS cancellation level setting_LSB byte
PS_CANC_M 7 : 0 0x00 to 0xFF, PS cancellation level setting_MSB byte
TABLE 11 - REGISTER: PS_THDL_L AND PS_THDL_M DESCRIPTION
COMMAND CODE: 0x06_L (0x06 DATA BYTE LOW) AND 0x06_H(0x06 DATA BYTE HIGH)
Register Bit Description
PS_THDL_L 7 : 0 0x00 to 0xFF, PS interrupt low threshold setting_LSB byte
PS_THDL_M 7 : 0 0x00 to 0xFF, PS interrupt low threshold setting_MSB byte
TABLE 12 - REGISTER: PS_THDH_L AND PS_THDH_M DESCRIPTION
COMMAND CODE: 0x07_L (0x07 DATA BYTE LOW) AND 0x07_H(0x07 DATA BYTE HIGH)
Register Bit Description
PS_THDH_L 7 : 0 0x00 to 0xFF, PS interrupt high threshold setting_LSB byte
PS_THDH_M 7 : 0 0x00 to 0xFF, PS interrupt high threshold setting_MSB byte
TABLE 13 - READ OUT REGISTER DESCRIPTION
Register Command Code Bit Description
PS_Data_L 0x08_L (0x08 data byte low) 7 : 0 0x00 to 0xFF, PS LSB output data
PS_Data_M 0x08_H (0x08 data byte high) 7 : 0 0x00 to 0xFF, PS MSB output data
ALS_Data_L 0x09_L (0x09 data byte low) 7 : 0 0x00 to 0xFF, ALS LSB output data
ALS_Data_M 0x09_H (0x09 data byte high) 7 : 0 0x00 to 0xFF, ALS MSB output data
White_Data_L 0x0A_L (0x0A data byte low) 7 : 0 0x00 to 0xFF, white LSB output data
White_Data_M 0x0A_H (0x0A data byte high) 7 : 0 0x00 to 0xFF, white LSB output data
Reserved 0x0B_L (0x0B data byte low) 7 : 0 Default = 0x00
INT_Flag 0x0B_H (0x0B data byte high)
7
6
5
4
3
2
1
0
Reserved
PS_SPFLAG, PS entering protection mode
ALS_IF_L, ALS crossing low THD INT trigger event
ALS_IF_H, ALS crossing high THD INT trigger event
Reserved
Reserved
PS_IF_CLOSE, PS rises above PS_THDH INT trigger event
PS_IF_AWAY, PS drops below PS_THDL INT trigger event
ID_L 0CH_L (0CH data byte low) 7 : 0 86H for MP version sample, device ID LSB byte
ID_M 0CH_H (0CH data byte high)
7 : 6
5 : 4
3 : 0
(0 : 0)
(0 : 0) Slave address = 0x60 (7-bit)
Version code (0 : 0 : 0 : 1), device ID MSB byte
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Adjustable Sampling Time
VCNL4040’s LED driver drives the internal IRED with the “LED CATHODE” pin by a pulsed duty cycle. The IRED on / off duty
ratio can be set in register: PS_Duty which is related to the current consumption and PS response time. The higher the duty
ratio, the faster the response time achieved with higher power consumption. For example, PS_Duty = 1/320, peak IRED current
= 100 mA, averaged current consumption is 100 mA/320 = 0.3125 mA.
Initialization
VCNL4040 includes default values for each register. As long as power is on, it is ready to be controlled by host via I2C bus.
Threshold Window Setting
ALS Threshold Window Setting (Applying ALS INT)
Register: ALS_THDH_L and ALS_THDH_M defines 16-bit ALS high threshold data for LSB byte and MSB byte. Register:
ALS_THDL_L and ALS_THDL_M defines 16-bit ALS low threshold data for LSB byte and MSB byte. As long as ALS INT
function is enabled, INT will be triggered once the ALS data exceeds ALS_THDH or goes below ALS_THDL. To easily define
the threshold range, multiply the value of the resolution (lux/step) by the threshold level (refer to table 14).
•ALS Persistence
The ALS INT is triggered once the ALS value is higher or lower than the threshold window. The ALS_PERS (1, 2, 4, 8 times)
parameter, sets the amount of consecutive hits needed, in order for an interrupt event to trigger.
Programmable PS Threshold
VCNL4040 provides both high and low thresholds setting for PS (register: PS_THDL, PS_THDH).
•PS Persistence
The PS persistence function (PS_PERS, 1, 2, 3, 4) helps to avoid false trigger of the PS INT. It defines the amount of
consecutive hits needed in order for a PS interrupt event to be triggered.
PS Active Force mode
An extreme power saving way to use PS is to apply PS active force (register: PS_CONF3 command: PS_AF = 1) mode.
Anytime host would like to request one proximity measurement, write a ‘1’ into register: PS_CONF3 command: PS_Trig. This
triggers a single PS measurement, which can be read from the PS result registers. VCNL4040 stays in standby mode
constantly.
Data Access
All of VCNL4040 16 bit command registers are readable. The result data for ALS, white, and PS measurements can be read out
form their respective registers. Each result is made of 2 bytes.
Intelligent Cancellation
VCNL4040 provides an intelligent cancellation method to reduce cross talk phenomenon for the proximity sensor. The output
data will be subtracted by the value set in register: PS_CANC.
TABLE 14 - ALS RESOLUTION AND MAXIMUM DETECTION RANGE
ALS_IT SENSITIVITY MAXIMUM DETECTION
RANGE
ALS_IT
(7 : 6)
INTEGRATION TIME
(typ.)
UNIT
(lux/step)
UNIT
(lux)
(0, 0) 80 ms 0.10 6553.5
(0, 1) 160 ms 0.05 3276.8
(1, 0) 320 ms 0.025 1638.4
(1, 1) 640 ms 0.0125 819.2
TABLE 15 - 16-BIT ALS DATA FORMAT
VCNL4040
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Register ALS_DataM ALS_DataL
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Interruption (INT)
The VCNL4040 has an interrupt feature for both the PS and ALS channel. The purpose of the interrupt feature is to actively
inform the host once INT has been triggered. When the interrupt is enabled, the host does not need to continuously read the
data registers of the sensor, but instead can simply react to the interrupt pin. As long as the host enables ALS interrupt (register:
ALS_INT_EN) or PS interrupt (register: PS_INT) function, the level of INT pin (pin 6) is pulled low once an interrupt event has
been triggered. All registers are accessible even if INT is triggered.
ALS INT is triggered when ALS value crosses over the value set in register: ALS_THDH or below the value set by
register: ALS_THDL. PS INT is triggered when the PS value crosses over the value set in register: PS_THDH or falls below the
value set in register: PS_THDL. Which of these thresholds to react to, can be set by the PS_INT bits in the register: PS_CONF2.
Interruption Flag
Register: INT_Flag represents all of the interrupt trigger statuses for ALS and PS. If any of these flags trigger from “0” to “1”,
the INT pin will be pulled low. Once the host reads INT_Flag register, all the flags are cleared (reset to "0"), and the INT pin is
reset to high.
PROXIMITY DETECTION LOGIC OUTPUT MODE
VCNL4040 has a proximity detection logic mode, enabling the host to read the state of PS (near or far) simply by monitoring the
INT pin (pin 6). When this mode is selected, the INT pin is pulled low when an object is close to the sensor (value is above high
threshold) and is reset to high when the object moves away (value is below low threshold). Register: PS_THDH / PS_THDL
define where these threshold levels are set.
It should be noted that whenever the proximity detection logic mode has been enabled, the INT pin only reacts to proximity
interrupt events. If the host would like to use ALS INT function, the bit PS_MS in the register: PS_MS needs to be set to normal
operation mode (PS_MS = 0). In order for the proximity detection logic mode to function, one of the PS_INT bits in register:
PS_CONF2 must be enabled (“trigger when close”, “trigger when away”, or “trigger when close or away”). If PS_INT is set to
“INT Disable” the proximity detection logic mode will not function.
PROXIMITY DETECTION HYSTERESIS
A hysteresis is created by setting the low and high threshold values. With proximity detection logic mode disabled, an interrupt
event will trigger and stay triggered until it is cleared in the INT_Flag register. The register is cleared automatically once it is read.
If the interrupt flags are not cleared after an interrupt event has occurred, the VCNL4040 will not react to another interrupt event
until the INT-Flag register has been cleared. An example of this could be when turning on and off a backlight of a mobile display.
First the PS INT triggers when the PS value is over PS_THDH. The host switches off the panel backlight and then clears INT.
When PS value is less than PS_THDL, host switches on panel backlight.
Fig. 13 - VCNL4040 Reference Circuit Connection with Host (Proximity Detection Logic Output Mode)
(VCNL4040 INT pin connecting to BB GPIO instead of INT pin)
GPIO INT
SCLK
8
7
3
5
1
0.1 μF
GND
SDAT
SCK
SDA
6
2.2 kΩ2.2 kΩ
VDD_LED
2.2 μF
8.2 kΩ
2
Cathode
(LED)
Anode 4
VCNL4040
Cathode
(sensor)
VDD
VPull_up
Baseband
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PACKAGE INFORMATION (VCNL4040M3OE) in millimeters
Fig. 14 - VCNL4040 Package Dimensions
LAYOUT PAD INFORMATION (VCNL4040M3OE) in millimeters
Fig. 15 - VCNL4040M3OE PCB Layout Footprint
GND
Cathode
(sensor)
V
DD
Anode
Cathode
(LED)
INT
SDAT
SCLK
1
2
3
4
5
6
7
8
Top View Side View Bottom View
1.075
1
4
0.9
0.675 x 8
5
8
1.1 ± 0.05 0.5
0.75
5
0.85
0.55
1
4
1.45
Ø 1.2
Ø 1.1
81
2.6
4 ± 0.1
LED
Sensor
1.075 1.075
2 ± 0.1
Pad Center to Center
1.4
Pad Center to Center
0.725 x 8
0.7 x 8
0.35
0.7
1.075 1.0751.075
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PACKAGE INFORMATION (VCNL4040M3OE-H3) in millimeters
Fig. 16 - VCNL4040M3OE-H3 Package Dimensions
PACKAGE INFORMATION (VCNL4040M3OE-H5) in millimeters
Fig. 17 - VCNL4040M3OE-H5 Package Dimensions
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LAYOUT PAD INFORMATION (VCNL4040M3OE-H3, VCNL4040M3OE-H5) in millimeters
Fig. 18 - VCNL4040M3OE-H3 and H5 PCB Layout Footprint
APPLICATION CIRCUIT BLOCK REFERENCE
Fig. 19 - VCNL4040 Application Circuit
(VDD (sensor and LED) suggestion circuit)
Pad Center to Center
1.7
Pad Center to Center
0.725 x 8
0.9 x 8
0.45
0.8
1.075 1.0751.075
INT INT
SCLK
8
7
3
2
1
0.1 μF
GND
SDAT
SCK
SDA
6
2.2 kΩ2.2 kΩ
VDD
2.2 μF
8.2 kΩ
5
Cathode
(sensor)
Anode 4
VCNL4040
Cathode
(LED)
VPull_up
Baseband
22 Ω
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RECOMMENDED INFRARED REFLOW
Soldering conditions which are based on J-STD-020 C
Recommend Normal Solder Reflow is 235 °C to 265 °C
Fig. 20 - VCNL4040 Solder Reflow Profile Chart
RECOMMENDED STORAGE AND REBAKING CONDITIONS
PARAMETER CONDITIONS MIN. MAX. UNIT
Storage temperature 5 50 °C
Relative humidity 60 %
Open time 168 h
Total time From the date code on the aluminized envelope (unopened) 12 months
Rebaking Tape and Reel: 60 °C 22 h
Tube: 60 °C 22 h
IR REFLOW PROFILE CONDITION
PARAMETER CONDITIONS TEMPERATURE TIME
Peak temperature 260 °C + 5 °C / - 5 °C (max.: 265 °C) 10 s
Preheat temperature range and timing 150 °C to 200 °C 60 s to 180 s
Timing within 5 °C to peak temperature 10 s to 30 s
Timing maintained above temperature / time 217 °C 60 s to 150 s
Timing from 25 °C to peak temperature 8 minutes (max.)
Ramp-up rate 3 °C/s (max.)
Ramp-down rate 6 °C/s (max.)
200
150
217
260
Max. Temperature
260+5/-5
0
C / 10 seconds
Soldering Zone
60-150 seconds
Temperature (ºC)
Time (second)
t
2
t
1
Ramp-up Rate
3
0
C / seconds
(max)
Ramp-down Rate
6
0
C / seconds
(max)
Ramp-up Rate
3
0
C / seconds
(max)
Pre-Heating Time
t
2
-t
1
= 60 - 180 secons
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RECOMMENDED IRON TIP SOLDERING CONDITION AND WARNING HANDLING
1. Solder the device with the following conditions:
1.1.Soldering temperature: 400 °C (max.)
1.2.Soldering time: 3 s (max.)
2. If the temperature of the method portion rises in addition to the residual stress between the leads, the possibility that an
open or short circuit occurs due to the deformation or destruction of the resin increases.
3. The following methods: VPS and wave soldering, have not been suggested for the component assembly.
4. Cleaning method conditions:
4.1. Solvent: methyl alcohol, ethyl alcohol, isopropyl alcohol
4.2.Solvent temperature < 45 °C (max.)
4.3.Time: 3 minutes (min.)
TAPE PACKAGING INFORMATION in millimeters
a L 7‘ /\1 ,«\ /\ _/\ ,r\ 1 \ )~ k x ‘x x /‘ ‘x / x / r'\ \ , \/ . I ‘_ ~. m HIMEE/ A W0 12.6 +/, 0.5 mm W1 20 6 +/, 0.5mm 1(unn:mm§ Tolcl'anc , Quzunm 6001»: Rtu‘ sensomeohsugpart©wshay£em www.vishay.cam/doc791000
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TAPE PACKAGING INFORMATION (VCNL4040M3OE-H3) in millimeters
__‘;'L_ 5 fl , V“ z'H‘ If“ '"\ {77“ \j x,/ \ j / \ 1 a; i ! ! ! I i ! A ' i 3 : l | I‘ I : g ! m. .m m u‘ . WI): I: 6 9/7 “.5 mm WI '20.. 0/7 u..
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TAPE PACKAGING INFORMATION (VCNL4040M3OE-H5) in millimeters
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Footprint and Schematic Information for VCNL4040
The footprint and schematic symbols for the following parts can be accessed using the link to the SnapEDA website. They are
available in Eagle, Altium, KiCad, OrCAD / Allegro, Pulsonix, and PADS.
Note that the 3D models for these parts can be found on the Vishay product page. The links are included here for convenience.
For technical issues and product support, please contact sensorstechsupport@vishay.com.
PART NUMBER FOOTPRINT / SCHEMATIC 3D MODEL
VCNL4040-M30E-H3 www.snapeda.com/parts/VCNL4040M3OE-H3/Vishay/view-part/ -
VCNL4040-M30E-H5 www.snapeda.com/parts/VCNL4040M3OE-H5/Vishay/view-part/ -
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