LG KU250 Service Manual - Page 55

HKADCHouse Keeping ADC - housing

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3. TECHNICAL BRIEF 3.11.3 HKADC(House Keeping ADC) The MSM6245 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 MSM6245 device has six analog input pins which are multiplexed to the input of the internal HKADC. Channel HKADC0 HKADC1 HKADC2 HKADC3 HKADC4 HKADC5 Figure 1.18 MSM6245 HKADC Block diagram Signal AMUX_OUT VBATT_SENSE NC NC PCB_Rev_ADC Battery_THERM Note RF PAM Temperature Check Battery voltage level NC NC PCB Version Check Battery Temperature Check Table. HKADC channel table - 56 -

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3.11.3 HKADC(House Keeping ADC)
The MSM6245 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 MSM6245 device has six analog input pins which are multiplexed to the input of the
internal HKADC.
3. TECHNICAL BRIEF
- 56 -
Figure 1.18 MSM6245 HKADC Block diagram
Table. HKADC channel table
Channel
Signal
Note
HKADC0
AMUX_OUT
RF PAM Temperature Check
HKADC1
VBATT_SENSE
Battery voltage level
HKADC2
NC
NC
HKADC3
NC
NC
HKADC4
PCB_Rev_ADC
PCB Version Check
HKADC5
Battery_THERM
Battery Temperature Check