LG U310 Service Manual page 45

3. TECHNICAL BRIEF
3.10.2.4. HKADC(House Keeping ADC)
The MSM6250A 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 MSM6250A device has six analog input pins which are multiplexed to the input of
the internal HKADC.
ADC Ch# Signal Name
HKADC0 AMUX_OUT
HKADC1 VBATT_SENSE
HKADC2 HDET1
HKADC3
HKADC4 PCB REVISION
HKADC5 VBAT_TEMP
Figure. MSM6250A HKADC Block diagram
Note
RF PAM Temperature sensing
Battery voltage level sensing
RF WCDMA PAM Power Level sensing
MAIN PCB Revision checking
Battery Temperature sensing
Table. HKADC channel table
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