LG U880 Service Manual page 48

3.10.2.4 HKADC(House Keeping ADC)
The MSM6250 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 MSM6250 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_LEVEL
HKADC2 HDET1
HKADC3 MULTI_ADC
HKADC4 PCB REVISION
HKADC5 VBAT_TEMP
Figure 3.10.2.4-1 MSM6250 HKADC Block diagram
Note
RF PAM Temperature sensing
Battery voltage level sensing
RF WCDMA PAM Power Level sensing
Headset type Detection
MAIN PCB Revision checking
Battery Temperature sensing
Table 3.10.2.4-1 HKADC channel table
- 49 -
3. TECHNICAL BRIEF