RF3146DPCBA-41X RFMD [RF Micro Devices], RF3146DPCBA-41X Datasheet - Page 6

• Manufacturer Part Number: RF3146DPCBA-41X
• Description: DUAL-BAND GSM900/DCS POWER AMP MODULE
• Manufacturer: RFMD [RF Micro Devices]

2-496
Base
Pkg
Pin
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
RF3146D
TX ENABLE
GND1 GSM
VCC1 GSM
GSM900 IN
VCC2 DCS
VCC1 DCS
BAND SEL
DCS OUT
Function
GSM850/
VRAMP
DCS IN
VBATT
VBATT
GND
GND
GND
NC
NC
NC
NC
Description
RF output for the DCS band. This is a 50Ω output. The output matching
circuit and DC-block are internal to the package.
Internally connected to the package base.
Internal circuit node. Do not externally connect.
Internally connected to the package base.
Controlled voltage input to the DCS driver stage. This voltage is part of
the power control function for the module. This node must be con-
nected to VCC OUT. This pin should be externally decoupled.
No internal connection. Connect to ground plane close to the package
pin.
RF input to the DCS band. This is a 50Ω output.
No internal connection. Connect to ground plane close to the package
pin.
Controlled voltage on the GSM and DCS preamplifier stages. This volt-
age is applied internal to the package. This pin should be externally
decoupled.
Allows external control to select the GSM or DCS bands with a logic
high or low. A logic low enables the GSM bands, whereas a logic high
enables the DCS/PCS bands.
This signal enables the PA module for operation with a logic high. Both
bands are disabled with a logic low.
Power supply for the module. This pin should be externally decoupled
and connected to the battery.
Power supply for the module. This pin should be externally decoupled
and connected to the battery.
Internal circuit node. Do not externally connect.
Ramping signal from DAC. A simple RC filter may be required depend-
ing on the selected baseband.
Internally connected to VCC1 (pin 39). No external connection
required.
Ground connection for the GSM preamplifier stage. Connect to ground
plane close to the package pin.
RF input to the GSM band. This is a 50Ω input.
Connect to ground plane with multiple via holes. See recommended
footprint.
Interface Schematic
See pin 6.
See pin 2.
See pin 39.
See pin 37.
VRAMP
BAND SEL
TX EN
TX EN
RF IN
VCC1
Rev A11 060719
VBATT
VCC1
+
-
TX ON
GSM CTRL
DCS CTRL