RF3133 Просмотр технического описания (PDF) - RF Micro Devices

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RF3133

QUAD-BAND GSM850/GSM/DCS/PCS POWER AMP MODULE

RF Micro Devices 

RF3133

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 band. This is a 50Ω input.

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.

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 -2dBm.

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.

GSM IN RF input to the GSM band. This is a 50Ω input.

VCC2

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.

GSM OUT RF output for the GSM band. 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 can not 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 band. This is a 50Ω output. The output load line

matching is contained internal to the package.

VCC2

Controlled voltage input to DCS driver stage. This voltage is part of the

power control function for the module. This node must be connected to

VCC out.

GND

Interface Schematic

2-464

Rev A6 050909

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