RF3145PCBA-41X RFMD [RF Micro Devices], RF3145PCBA-41X Datasheet - Page 9

• Manufacturer Part Number: RF3145PCBA-41X
• Description: QUAD-BAND GSM/EDGE/GSM850/DCS/PCS POWER AMPLIFIER MODULE
• Manufacturer: RFMD [RF Micro Devices]

Rev A4 050919
Base
Pkg
Pin
10
11
12
1
2
3
4
5
6
7
8
9
DCS/PCS IN
TX ENABLE
GSM OUT
DCS/PCS
Function
SELECT
VMODE
VRAMP
GSM IN
VBATT
BAND
GND
OUT
NC
NC
NC
Description
RF input to the DCS/PCS band. This is a 50Ω input.
Allows external control to select the GSM or DCS/PCS band with a
logic high or low. A logic low enables the GSM band whereas a logic
high enables the DCS/PCS band.
This signal enables the PA module for operation with a logic high. Once
TX Enable is asserted the RF output level will increase to 0dBm.
Power supply for the module. This should be connected to the battery.
This signal selects 8PSK mode with a logic “high” (1.5V to 3.0V), and
selects GMSK mode with a logic “low” (0V to 0.7V). When the VMODE
switch is enabled “high”, the gain in the GSM band is reduced by
bypassing the first stage amplifier. When the VMODE is “low”, all
stages are active.
Ramping signal from DAC. A simple RC filter may need to be con-
nected between the DAC output and the V
baseband selected. The ramping profiles shown later in the data sheet
are recommended profiles for meeting the GSM specification for burst
timing and transient spectrum.
RF input to the GSM band. This is a 50Ω input.
Not connected.
RF output for the GSM band. This is a 50Ω output. The output load line
matching is contained internal to the package.
Not connected.
RF output for the DCS/PCS band. This is a 50Ω output. The output
load line matching is contained internal to the package.
Not connected.
RAMP
input depending on the
Interface Schematic
RF3145
2-527