AS3525-A/-B C22O22
Data Sheet, Confidential
7.4.20.4 Parameter
Table 153 ADC10 Parameter
Symbol
Parameter
Notes
Min
Typ
Max
Unit
RDIV
Input Divider Resistance
CHG_OUT, RTCSUP, VBUS, CHG_IN, 138k
180k
234k
Ω
VBAT
ADCFS
Ratio1
Ratio2
Gain
ADC Full Scale Range
Divition Factor 1
2.534
2.56
0.2
0.4
2.5
34
2.586
0.202
0.404
2.525
50
V
1
CHG_OUT, RTCSUP, VBUS, CHG_IN
VBAT
0.198
0.396
2.475
-
Divition Factor 2
1
ADC Gain Stage
V
TCON
Conversion Time
µs
mA
I_MICFS
I_MicSup1/2 Full Scale Range
0.7
1.0
1.4
BVDD=3.6V; Tamb=25ºC; unless otherwise specified
7.4.20.5 Register Description
Table 154 ADC10 Related Register
Name
Base
Offset
Description
Interrupt settings for end of conversion interrupt
IRQ_ENRD_2
I2C audio master
0x27
Table 155 ADC_0 Register
Name
ADC_0
Base
Default
I2C audio master
0000 00xx
First 10-bit ADC Register
Offset: 0x2E
Writing to this register will start the measurement of the selected source.
This register is reset at a DVDD-POR, exception are bit 8 and 9.
Bit
Bit Name
ADC_Source
Default
Access
Bit Description
Selects ADC input source
7:4
00000000 R/W
0000: CHG_OUT
0001: RTCSUP
0010: VBUS
0011: CHG_IN
0100: CVDD
0101: BatTemp
0110: MicSup1
0111: MicSup2
1000: VBE_1uA
1001: VBE_2uA
1010: I_MicSup1
1011: I_MicSup2
1100: VBAT
1101: reserved
1110: reserved
1101: reserved
do not change
ADC result bit 9 to 8
3:2
1:0
-
00
xx
n/a
R/W
ADC<9:8>
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