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PDF RMPA1850 Data sheet ( Hoja de datos )
| Número de pieza | RMPA1850 | |
| Descripción | Quad Band GSM/GPRS Power Amplifier Module | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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December 2004
RMPA1850
Quad Band GSM/GPRS Power Amplifier Module
Features
I Quad band, matched module
I High efficiency- 55% GSM850/900, 50% DCS/PCS
I Integrated power control function
I Compact 7*10*1.6mm module
I InGaP HBT technology
I GPRS class 12 capable
I Ruggedness 10:1
I 50 dB power control range
Functional Block Diagram
General Description
The RMPA1850 power amplifier module (PAM) is designed for
GSM/GPRS cellular handset applications. The PAM a fully
input and output 50Ω matched. It also includes integrated power
control and band select.
DCS/PCS IN 1
BAND SELECT 2
TX EN 3
VBAT 4
VREG 5
VRAMP 6
GSM IN 7
VCC2
12
Match
Match
Power
Sensing
CMOS
Power
Controller
Match
8
VCC2
Match
Power
Sensing
11 DCS/PCS OUT
10 VOUT
9 GSM OUT
©2004 Fairchild Semiconductor Corporation
RMPA1850 Rev. A1
1
www.fairchildsemi.com
1 page  
Signal Descriptions
Pin Function
1 DCS/PCS IN
2 Band Select
3 TX_EN
4 VBAT
5 VREG
6 VRAMP
7 GSM IN
8 VCC2
9 GSM OUT
10 VOUT
11 DCS/PCS OUT
12 VCC2
Description
50Ω RF input of DCS/PCS band.
Logic high for DCS/PCS and logic low for GSM850/EGSM900 band.
Logic high to enable the PA module function.
Power supply to the PA module. This should be connected to battery. The decoupling
capacitor is required to filter the interference.
Normally, 2.8 volts are required at this node for the operation of control circuits.
Ramping signal from DAC to control the power level.
50Ω RF input of GSM850/EGSM900 band.
Power supply for the driver stage of the GSM850/EGSM900 band. This is internally
connected to VBAT node within the module.
50Ω RF output of GSM850/EGSM900 band.
Power supply for the power stages of GSM850/EGSM900 and DCS/PCS band. This is
internally connected to VBAT node within the module.
50Ω RF output of DCS/PCS band.
Power supply for the driver stage of the GSM850/EGSM900 and DCS/PCS band. This is
internally connected to VBAT node within the module.
DCS/PCS IN 1
VCC2
12
BAND SELECT 2
TX EN 3
VBAT 4
VREG 5
VRAMP 6
GSM IN 7
8
VCC2
11 DCS/PCS OUT
10 VOUT
9 GSM OUT
RMPA1850 Rev. A1
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet RMPA1850.PDF ] | |
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