SKY66108_11 Datasheet, PDF (2/13 Pages) Skyworks Solutions Inc. – 2.0 V to 3.6 V supply operation

DATA SHEET • SKY66108-11: 2.4 GHz SMART ENERGY/ZIGBEE FRONT-END MODULE
Table 1. SKY66108-11 Signal Descriptions
Pin Name
Description
1 VCC1 Positive supply
2 VB_IN Bias voltage input supply to the transceiver (see Figure 3)
3 TRXP Input/output signal to the transceiver, 100 Ω differential
4 TRXN Input/output signal to the transceiver, 100 Ω differential
5
N/C Not connected
6
VCC Positive supply
7
N/C Not connected
8
CPS Bypass mode control, connect to RFIC or SoC GPIO
9
GND Connect to PCB the ground
10 CRX Receive function control
11 CTX Transmit function control
Pin Name
Description
12
CSD Sleep mode control
13
ANT Connect to 50 Ω antenna
14
N/C Not connected
15
N/C Not connected
16
N/C ^{Not connected}
17
N/C ^{Not connected}
18
GND Connect to PCB ground
19 VCC2 Positive supply
20
GND Connect to PCB ground
Paddle
GND
Exposed die paddle; electrical and thermal ground; connect to
PCB ground
SoIC
VDD_PA
FEM
VB_IN
Optional Output Filter
2n7
1 pF
1 pF
1 kΩ each series resistor,
placed close to the SKY66108-11 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.
Y1902
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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April 16, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202969B