LG LG9200 Service Manual page 36

Transmitter Part Description(4)
2. Tx Part component Description
➃ PAM - control signals
PAM
U503
PA PA APC
BAND ON
- 37 -
3. Technical Brief
• PA_ON
- From DBB Chip Set
- Enables Tx Path
• PA_Band
- From DBB Chip Set
- Select PAM operating band
- Low : GSM selected
- High : PCS selected
• APC
- From ABB Chip Set
- Controls Tx rising and falling shape
- APC voltage Controls Tx Output
Power