SKY66109_11 Datasheet, PDF (2/14 Pages) Skyworks Solutions Inc. – Integrated PA with up to plus 22.5 dBm output power

DATA SHEET • SKY66109-11: ZIGBEE/SMART ENERGY FEM
Table 1. SKY66109-11 Signal Descriptions
Pin
Name
Description
Pin
Name
1 GND
Ground
11 GND
2 TXP
Positive transmit input signal from transceiver, 200
Ω differential
12 ANT1
3 TXN
Negative transmit input signal from transceiver, 200
Ω differential
13
GND
4 VB_OUT
Transmit balun bias core supply from transceiver
(optional connection)
14 ANT_SEL
5 RXP
Positive receiver output signal to transceiver, 200 Ω
differential
15
GND
6 RXN
Negative receiver output signal to transceiver, 200
Ω differential
16 VCC2
7 VB_IN
Receive balun bias core supply from transceiver
(optional connection)
17 CSD
8 GND
Ground
18 CPS
9 GND
Ground
19 VCC1
10 ANT2
Connect to 50 Ω antenna
20 CTX
Ground
Description
Connect to 50 Ω antenna
Ground
Connect to GPIO signal to control antenna switch (see
Table 7)
Ground
Connect to positive supply
Connect to GPIO signal for mode control (see Table 6)
Connect to GPIO signal for mode control (see Table 6)
Connect to positive supply
Connect to GPIO signal for mode control (see Table 6)
VREG_OUT
SoC
VDD_PA
+1.8 V
FEM
VB_IN
VB_OUT
Optional Output Filter
2n7
1 pF
1 pF
1 kΩ each series resistor,
placed close to the SKY66109 pins.
CPS
CSD
CTX
Differential source
or load impedance symbol
1.8 V
Input
Input
1.8 V
Internal Lattice Balun
Decoupling capacitor
on chip
1.8 V VBIAS_IN
The balun at the FEM PA input (or LNA output) can also be used to inject a bias
operating point for the transceiver output stage (the shunt inductor provides a DC
path on the other side). The inductor also tunes out any parasitic capacitance.
If the SOIC transceiver does not require a DC bias, leave the VB_IN open.
Y2261
Figure 3. Injecting a Bias Operating Point for the Transceiver Output Stage
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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August 13, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203034F