3. TECHNICAL BRIEF
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3.2 Power Amplifier Module (RF3166, U501
)
The RF3166 is a high-power, high-efficiency power amplifier module with integrated power
control that provides over 50dB of control range. The device is a self-contained 6mmx6mm
module with 50Ω input and output terminals.
The device is designed for use as the final RF amplifier in GSM850, EGSM900, DCS and PCS
handheld digital cellular equipment and other applications in the 824MHz to 849MHz, 880MHz to
915MHz, 1710MHz to 1785MHz and 1850MHz to 1910MHz bands. The RF3166 incorporates
RFMD’s latest VBATT tracking circuit, which monitors battery voltage and prevents the power
control loop From reaching saturation. The VBATT tracking circuit eliminates the need to monitor
battery voltage, thereby minimizing switching transients. The RF3166 requires no external routing
or external components, simplifying layout and reducing board space.
Figure 3-5 FUNCTIONAL BLOCK DIAGRAM
GSM
RFOUT
DCS/PCS
RFOUT
GND
VRAMP
GSM
RFIN
VBATT
BAND SELECT
TX ENABLE
DCS/PCS
RFIN
1
2
3
4
5
6
7
8
9
Summary of Contents for B2050
Page 7: ... 6 2 PERFORMANCE 2 PERFORMANCE 2 1 H W Features ...
Page 8: ... 7 2 PERFORMANCE ...
Page 9: ... 8 2 PERFORMANCE 2 2 Technical Specification ...
Page 10: ... 9 2 PERFORMANCE ...
Page 11: ... 10 2 PERFORMANCE ...
Page 12: ... 11 2 PERFORMANCE ...
Page 13: ... 12 2 PERFORMANCE ...
Page 57: ... 56 3 Checking Ant SW Mobile SW 4 TROUBLE SHOOTING ...
Page 67: ... 66 TEST POINT 4 6 LCD Trouble 4 TROUBLE SHOOTING ...
Page 70: ... 69 4 TROUBLE SHOOTING TEST POINT 4 7 Speaker Trouble ...
Page 77: ... 76 4 TROUBLE SHOOTING 4 10 KEY backlight Trouble TEST POINT ...
Page 92: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Calibration ...
Page 93: ... 92 5 DOWNLOAD AND CALIBRATION ...
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Page 103: ... 102 Figure 8 1 B2050 BOTTOM SIDE PCB LAYOUT 8 PCB LAYOUT ...
Page 104: ... 103 8 PCB LAYOUT Figure 8 1 B2050 TOP SIDE PCB LAYOUT ...
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Page 113: ...10 STAND ALONE TEST 112 ...
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