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2-497
RF3166
Rev A3 061031
Pin
Function
Description
Interface Schematic
1
DCS/PCS IN RF input to the DCS band. This is a 50Ω input.
2
BAND
SELECT
Allows external control to select the GSM or DCS band with a logic high
or low. A logic low enables the GSM band whereas a logic high enables
the DCS band.
3
TX ENABLE This signal enables the PA module for operation with a logic high.
4VBATT
Power supply for the module. This should be connected to the battery.
5GND
6
VRAMP
Ramping signal from DAC. A 300kHz lowpass filter is integrated into
the CMOS. No external filtering is required.
7
GSM IN
RF input to the GSM band. This is a 50
Ω input.
8GSM OUT
RF output for the GSM band. This is a 50
Ω output. The output load line
matching is contained internal to the package.
9
DCS/PCS
OUT
RF output for the DCS band. This is a 50
Ω output. The output load line
matching is contained internal to the package.
Pkg
Base
GND
GSM CTRL
DCS CTRL
BAND SEL
TX EN
TX EN
VBATT
TX ON
VRAMP
300 kHz
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