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
Содержание B2050
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Страница 53: ... 52 4 2 TX Trouble TEST POINT 13Mhz OSCILLATOR Mobile SW FEM TRANCEIVER LDO PAM 4 TROUBLE SHOOTING ...
Страница 57: ... 56 3 Checking Ant SW Mobile SW 4 TROUBLE SHOOTING ...
Страница 67: ... 66 TEST POINT 4 6 LCD Trouble 4 TROUBLE SHOOTING ...
Страница 70: ... 69 4 TROUBLE SHOOTING TEST POINT 4 7 Speaker Trouble ...
Страница 77: ... 76 4 TROUBLE SHOOTING 4 10 KEY backlight Trouble TEST POINT ...
Страница 91: ... 90 5 DOWNLOAD AND CALIBRATION 6 Press Start and Pover on the phone using JIG remote Power on Switch 1 ...
Страница 92: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Calibration ...
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