3. TECHNICAL BRIEF
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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.
Figure. MSM6250A HKADC Block diagram
Table. HKADC channel table
Channel
Signal
Note
HKADC0
AMUX_OUT
RF PAM Temperature sensing
HKADC1
VBATT_LEVEL
Battery voltage level sensing
HKADC2
HDET1
RF WCDMA PAM Power Level sensing
HKADC3
HKADC4
PCB REVISION
MAIN PCB Revision checking
HKADC5
VBAT_TEMP
Battery Temperature sensing
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