Skyworks Solutions Inc.が提供するRFX2401Cのデータシート

9@ X SKYWORKS“
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET
RFX2401C: 2.4 GHz ZigBee®/ISM Front-End Module
Applications
ZigBee extended range devices
ZigBee smart power
Wireless sound and audio systems
Home and industrial automation
Wireless sensor networks
Custom 2.4 GHz radio systems
Features
2.4 GHz ZigBee high-power single-chip, single-die RF
front-end IC
Single-ended 50 Ω input and output ports
Integrated PA with up to +22 dBm output power
Integrated LNA with 2.5 dB noise figure
Transmit/receive switch circuitry
High transmit signal linearity meeting standards for OQPSK
modulation
Low voltage (1.2 V) CMOS control logic
ESD protection circuitry on all ports
DC decoupled RF ports
Full on-chip matching and decoupling circuitry
Market proven CMOS technology
Small QFN, 16-pin (3 x 3 x 0.55 mm) package with exposed
ground pad (MSL1, 260 C per JEDEC J-STD-020)
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
TXRX ANT
204359-001
PA
LNA
Logic
Control
CTX CRX
Figure 1. RFX2401C Block Diagram
Description
The RFX2401C is a fully integrated front-end module that
incorporates all the RF functionality needed for IEEE
802.15.4/ZigBee, wireless sensor network, and any other wireless
systems in the 2.4 GHz ISM band. The RFX2401C architecture
integrates the PA, LNA, transmit and receive switching circuitry,
and the associated matching network, all in a single package.
Typical high-power applications include home and industrial
automation, smart power, and RF4CE among others. Combining
superior performance, high sensitivity and efficiency, low noise,
small form factor, and low cost, the RFX2401C is the perfect
solution for applications requiring extended range and bandwidth.
RFX2401C has simple and low-voltage CMOS control logic, and a
wide operating supply voltage range.
The device is provided in a compact, 16-pin 3 x 3 mm Quad Flat
No-Lead (QFN) package. A functional block diagram is shown in
Figure 1. The pin configuration and package are shown in
Figure 2. Signal pin assignments and functional pin descriptions
are provided in Table 1.
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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204359-002
N/C
GND
GND
TXRX
TXEN N/C
VDD
N/C
GND
ANT
GND
RXEN
N/CDNC
VDD
GND
16
5
1
2
3
4
15 14 13
678
9
10
11
12
17
GND
Figure 2. RFX2401C Pinout
(Top View)
Table 1. RFX2401C Signal Descriptions
Pin Name Description Pin Name Description
1 N/C Not connected internally 9 GND Ground
2 GND Ground 10 ANT Connect to 50 Ω antenna (DC shorted to GND)
3 GND Ground 11 GND Ground
4 TXRX RF signal to/from the transceiver (DC shorted to GND) 12 N/C Not connected internally
5 TXEN CMOS input to control TX enable 13 DNC Do not connect
6 RXEN CMOS input to control RX enable 14 VDD Alternate supply pin, internally connected to pin 16
7 N/C Not connected internally 15 N/C Not connected internally
8 GND Ground 16 VDD Voltage supply connection
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Electrical and Mechanical Specifications
The absolute maximum ratings of the RFX2401C are provided in
Table 2. The recommended operating conditions are specified
in Table 3.
The electrical specifications are provided in Tables 4 and 5. The
state of the RFX2401C is determined by the logic provided in
Table 6.
Table 2. RFX2401C Absolute Maximum Ratings1
Parameter Conditions Minimum Maximum Units
DC VDD voltage supply 0 4.0 V
DC control pin voltage Through 1 kΩ resistor 0 3.6 V
DC VDD current consumption Through VDD pins when TX is “ON” 350 mA
DC control pin current consumption 1 μA
TX RF input power All operating modes +5 dBm
ANT RF input power When RX is “ON” +5 dBm
Junction temperature 150 °C
Storage ambient temperature No RF and DC voltages applied -50 +150 oC
Electrostatic discharge:
Human Body Model (HBM)
3250 V
1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters
set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. All maximum RF input power ratings assume 50 Ω terminal
impedance.
ESD HANDLING: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device.
This device must be protected at all times from ESD when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. RFX2401C Recommended Operating Conditions1
Parameter Conditions Min Typ Max Units
DC VDD voltage supply All VDD pins 2.0 3.3 3.6 V
Control voltage “high” Through 1 kΩ resistor 1.2 VDD V
Control voltage “low” 0 0.3 V
Operating ambient temperature Note 2 -40 +125 oC
ja 35
oC/W
1 During production test, devices will be tested at 5 V.
2 For operation above +85 °C, use the ja as guidance for system design to assure the junction temperature will not exceed the maximum of +150 °C.
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
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Table 4. RFX2401C Electrical Specifications1 (VDD = 3.3 V, All Unused Ports Terminated with 50 Ω, TA = 25 °C, Unless Otherwise Noted)
Parameter Symbol Test Condition Min Typ Max Units
Frequency range f 2.4 2.525 GHz
Transmit Mode
Saturated output power +22 dBm
Small-signal gain 21.5 25 26.5 dB
Second harmonic P
OUT = +20 dBm, IEEE 802.15.4
OQPSK modulation signal
–10 dBm/MHz
Third harmonic P
OUT = +20 dBm, IEEE 802.15.4
OQPSK modulation signal
–20 dBm/MHz
Input return loss –10 dB
Output return loss –6 dB
Input / output impedance single-ended 50 Ω
TX quiescent current No RF applied 17 mA
TX high-power current POUT = +20 dBm 90 mA
Load VSWR for stability
(POUT = +20 dBm)
All non-harmonically related spurs
less than –43 dBm/MHz
6:1 N/A
Load VSWR for ruggedness
(POUT = +20 dBm)
No damage 10:1 N/A
Receive Mode
Gain 12 dB
Noise figure 2.5 dB
Input return loss –10 dB
Output return loss –12 dB
Rf port impedance 50 Ω
Rx quiescent current No RF applied 8 mA
Input p1db At ANT pin –8 dBm
1 Performance is guaranteed only under the conditions listed in this table.
Table 5. RFX2401C Standby Mode Technical Parameters
Parameter Symbol Test Condition Min Typ Max Units
DC shutdown current 1 μA
TXRX-ANT insertion loss (S21) Pin < -20 dBm –50 dB
ANT-TXRX insertion loss (S21) –50 dB
Return loss (S11) From TXRX port –1.5 dB
Transmit-receive switching time 800 nsec
Shutdown and “ON” State switching
time
800 nsec
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Table 6. RFX2401C Control Logic1
Mode TXEN RXEN
TX active 1 x
RX active 0 1
Shutdown 0 0
1 “1” denotes high voltage state (> 1.2 V)
“0” denotes low voltage stage (< 0.3 V) at control pins
“X” denotes do not care: either “1” or “0” can be applied
Application Schematic Board Description
A suggested RFX2401C FEM application schematic diagram is
shown in Figure 3. A schematic of the Evaluation Board is shown
in Figure 4.
Circuit Design Considerations
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
Paths to ground should be made as short as possible.
If the transceiver TXRX port has DC present, use a capacitor to
block this voltage from reaching the RFX2401C.
The ground pad of the RFX2401C has special electrical and
thermal grounding requirements. This pad is the main thermal
conduit for heat dissipation. Because the circuit board acts as
the heat sink, it must shunt as much heat as possible from the
device.
Multiple vias to the grounding layer are required.Use thermal
vias to assure efficient heat dissipation.
Locate the bypass capacitors as close as possible to the
ground pad. Use two ground vias.
The VDD (pin 14) is an optional VDD pin, internally connected to
pin 16.
The N/C pins 1, 7, 12, and 15 may be left open or connected to
GND.
If the antenna circuits have DC present, use a capacitor to
block this voltage from reaching the RFX2401C.
NOTE: A poor connection between the ground pad and ground
increases junction temperature (TJ), which reduces the life
of the device..
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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204359-003
Harmonic Filtering
Performance is sensitive to PCB parasitics. Therefore,
custom PCB layout should emulate the reference PCB
layout attached to this design as closely as possible.
C3 is always required to filter the 5th harmonic. It
must be located as close as possible to ANT pin.
Option 1: Discrete LC Filter
All inductors and capacitors must be populated. Use ceramic multi-layer
inductors for effective filtering.
(Murata LPQ series, SEMCO, Johanson/ACX)
Depending on layout, all inductor and capacitor values may require minor
value tweaks for optimum impedance matching.
Option 2: Ceramic Filter
FL1 represents the option to replace the discrete pi filters by a
ceramic low pass filter solution as follows:
Populate FL1. (ACX LF1608-B2R4KCBB or Johanson 2450LP14A100T)
Populate L2 with 0 Ohm resistor (=jumpers).
C3 is still required to filter the 5th harmonic.
Do Not Populate C4, C5, C6, and C7.
Do Not Populate L1.
J4
1
2
3
4
FL1
2.45 GHz LP
GND1
1
IN
2
GND2
3
GND4 6
OUT 5
GND3 4
L2
2.4 nH
C5
1.5 pF
J1
1
2
3
4
C6
1.5 pF
R2
10 k
Ω
C1
1 uF
J2
SMA
1
2 3
4 5
C7
1.5 pF
U1
RFX2401C
N/C
1
GND
2
GND
3
TXRX
4
RXEN
6
N/C
7
GND
8
GND 9
ANT 10
GND 11
N/C12
DNC13
VDD 14
N/C15
PAD
17
TXEN
5VDD 16
J3
SMA
1
23
45
C2
220 pF
C3
0.3 pF
R1
10 k
Ω
L1
2.4 nH
C4
1.5 pF
Figure 3. RFX2401C Application Schematic
E 1 E Li, W L1,, L1,, and: W . L1,, in; E E i T, ,, Lia Wu; 4, E w M. g, E E E,
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Performance is sensitive to PCB parasitics. Therefore
custom PCB layout should emulate the reference PCB
layout attached to this design as closely as possible.
C3 is always required to filter the 5th harmonic. It
must be located as close as possible to ANT pin.
Harmonic Filtering
C1
1 uF
U1
RFX2401C
GND1
1
GND2
2
GND3
3
TXRX
4
RXEN
6
GND4
7
GND5
8
GND69
ANT 10
GND7 11
GND8 12
DNC113
DNC214
GND915
GND10
17
TXEN
5VDD 16
C3
DNI
DNI
2.45 GHz LP
GND1
1
IN
2
GND2
3
GND4 6
OUT 5
GND3 4
J5
HEADER 4X2
2
4
6
8
1
3
5
7
J2
SMA 1
2 3
4 5
C2
220 pF
L1
0 Ω
C7
DNI
C6
DNI
R2
10 kΩ
C5
DNI
C4
DNI
J1 HDR4
1
2
3
4
J3
SM
A
1
23
45
R1
10 kΩ
VDD
VLOGIC
L2
0 Ω
204359-004
Figure 4. RFX2401C Evaluation Board Schematic
+ a E
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
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Package Dimensions
The PCB layout footprint for the RFX2401C is shown in Figure 5.
Typical part markings are shown in Figure 6. Package
dimensions are shown in Figure 7, and tape and reel
dimensions are provided in Figure 8.
Package and Handling Information
Instructions on the shipping container label regarding exposure
to moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The RFX2401C is rated to Moisture Sensitivity Level 1 (MSL1) at
260 C. It can be used for lead or lead-free soldering. For
additional information, refer to the Skyworks Application Note,
Solder Reflow Information, document number 200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
204359-004
3.5mm
3.0mm
1.7 mm x
1.7 mm
0.65mm
0.5mm
0.25 mm
0.25 mm
Figure 5. RFX2401C PCB Layout Footprint
(Top View)
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DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
204359B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 16, 2017 9
204359-006
2401C
LLLL.L
UHYYWW
Skyworks
Part Number
Lot Code
Date Code
Pin 1
Indicator
Figure 6. Typical Part Markings
(Top View)
204359-007
Figure 7. RFX2401C Package Dimensions
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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2.00 ±0.05 4.00 ±0.10
Ø1.50 +0.10
–0.00
8.00 ±0.10
1.75 ±0.10
12.00 ±0.30
5.50 ±0.05
All measurements are in millimeters.
204359-008
0.75 ±0.10
3.30 ±0.10
3.30 ±0.10
0.30 ±0.05
Ø1.50 Min
Pin 1
Figure 8. RFX2401C Tape and Reel Dimensions
DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Ordering Information
Model Name Manufacturing Part Number Evaluation Board Part Number
RFX2401C: 2.4 GHz ZigBee/ISM Front-End Module RFX2401C RFX2401C-EK1
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