RF3140 データシートの表示（PDF） - RF Micro Devices
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RF3140 Datasheet PDF : 16 Pages
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RF3140
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Pkg
Base
Function Description
DCS/PCS IN RF input to the DCS/PCS band. This is a 50Ω input.
BAND
SELECT
Allows external control to select the GSM or DCS/PCS bands with a
logic high or low. A logic low enables the GSM bands, whereas a logic
high enables the DCS/PCS bands.
TX ENABLE This signal enables the PA module for operation with a logic high. Once
TX Enable is asserted the RF output level will increase to -20dBm.
VBATT
Power supply for the module. This should be connected to the battery.
VREG
Regulated voltage input for power control function. (2.8V nom)
VRAMP
Ramping signal from DAC. A simple RC filter may need to be con-
nected between the DAC output and the VRAMP input depending on the
baseband selected.
GSM850/GS RF input to the GSM bands. This is a 50Ω input.
M900 IN
VCC2
GSM850/GS
M900 OUT
Controlled voltage input to driver stage for GSM bands. This voltage is
part of the power control function for the module. This node must be
connected to VCC out.
RF output for the GSM bands. This is a 50Ω output. The output load
line matching is contained internal to the package.
VCC OUT
Controlled voltage output to feed VCC2. This voltage is part of the power
control function for the module. It cannot be connected to anything
other than VCC2, nor can any component be placed on this node (i.e.,
decoupling capacitor).
DCS/PCS
OUT
RF output for the DCS/PCS bands. This is a 50Ω output. The output
load line matching is contained internal to the package.
VCC2
Controlled voltage input to DCS/PCS driver stage. This voltage is part
of the power control function for the module. This node must be con-
nected to VCC out.
GND
Interface Schematic
Rev A6 040113
2-497
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