LG U830 KU830 Service Manual page 50

3.11.3. HKADC(House Keeping ADC)
The MSM6275 device has an on-chip 8-bit analog-to-digital converter (HKADC) which is tended to digitize
DC signals corresponding to analog parameters such as battery voltage, temperature, and RF power levels.
The MSM6275 device has six analog input pins which are multiplexed to the input of the internal HKADC.
Channel Signal
HKADC0 AMUX_OUT
HKADC1 VBATT_SENSE
HKADC2 HDET1
HKADC3 REMOTE_ADC
HKADC4 PCB_Rev_ADC
HKADC5 VBATT_THERM
Figure. MSM6275 HKADC Block diagram
Note
RF PAM Temperature Check( Not Used)
Battery voltage level
RF PAM Power Level Detector
Ear jack Remote key detection
PCB Version Check
Battery Temperature Check
Table. HKADC channel table
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3. TECHNICAL BRIEF