LG KM710 Service Manual - Page 19
Power Amplifier Module, for Quad-band GSM/GPRS/EDGE
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3. HW Circuit Description 3.2.4.2 Logic Table for Selection GSM850_Tx GSM1800 / 1900_Tx GSM850_Rx GSM1800_Rx GSM1900_Rx Vc1 2.6V 0V 0V 0V 0V Vc2 0V 2.6V 0V 0V 0V Band SW Logic Table 3.2.5 Power Amplifier Module for Quad-band GSM/GPRS/EDGE 3.2.5.1 PAM Specification -. Quad band GSM, GPRS & Polar Loop EDGE Amplifier -. For 3.5V nominal operation -. Built-in LDO circuit -. GPRS Class 12 operation compatible -. Integrated directional coupler 3.2.5.2 Circuit Diagram and peripheral components Current 8.0 mA 8.0 mA
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Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
3. HW Circuit Description
- 20 -
3.2.4.2 Logic Table for Selection
3.2.5 Power Amplifier Module
for Quad-band GSM/GPRS/EDGE
3.2.5.1 PAM Specification
-. Quad band GSM, GPRS & Polar Loop EDGE Amplifier
-. For 3.5V nominal operation
-. Built-in LDO circuit
-. GPRS Class 12 operation compatible
-. Integrated directional coupler
3.2.5.2 Circuit Diagram and peripheral components
Vc1
Vc2
Current
GSM850_Tx
2.6V
0V
8.0 mA
GSM1800 / 1900_Tx
0V
2.6V
8.0 mA
GSM850_Rx
0V
0V
<0.5µA
GSM1800_Rx
0V
0V
<0.5µA
GSM1900_Rx
0V
0V
<0.5µA
<Table> Band SW Logic Table
PAM