AMC7812B_15 Datasheet, PDF (73/92 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812B
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SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
ADC Channel Register 1 (Read or Write, Address = 51h, Default = 0000h)
MSB
BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10
0 SE13 SE14 SE15 0
0
BIT 9
0
BIT 8
0
BIT 7
0
BIT 6
0
BIT 5
0
BIT 4
0
BIT 3
0
BIT 2
0
BIT 1
0
LSB
BIT 0
0
These bits specify the external analog auxiliary input channels (CH13, CH14, and CH15) to be converted. The
specified channel is accessed sequentially in the order from bit 14 to bit 0 of ADC channel register 0, and then bit
14 to bit 12 of ADC channel register 1. The input is converted when the corresponding bit is set ('1').
Bits[14:12]
SEn
External single-ended analog input CHn. The result is stored in the ADC-n-data register in straight binary format.
ADC Gain Register (Read or Write, Address = 52h, Default = FFFFh)
MSB
BIT
15
ADG0
BIT
14
ADG1
BIT
13
ADG2
BIT
12
ADG3
BIT
11
ADG4
BIT
10
ADG5
BIT 9
ADG6
BIT 8
ADG7
BIT 7
ADG8
BIT 6
ADG9
BIT 5
ADG10
BIT 4
ADG11
BIT 3
ADG12
BIT 2
ADG13
BIT 1
ADG14
LSB
BIT 0
ADG15
Bit 15
Bit 14
Bit 13
Bit 12
Bit[11:0]
ADG0
0 = The analog input range of single-ended input CH0 (SE0) is 0 V to V_REF or differential input pair DF (CH0+, CH1–) is
–V_REF to +V_REF
1 = The analog input range of single-ended input CH0 (SE0) is 0 V to (2 × V_REF) or differential input pair DF (CH0+,
CH1–) is (–2 × V_REF) to (+2 × V_REF)
ADG1
0 = The analog input range of single-ended input CH1 (SE1) is 0 V to V_REF
1 = The analog input range is 0 V to (2 × V_REF)
ADG2
0 = The analog input range of single-ended input CH2 (SE2) is 0 V to V_REF or differential input pair DF (CH2+, CH3–) is
–V_REF to +V_REF
1 = The analog input range of single-ended input CH2 (SE2) is 0 V to (2 × V_REF) or differential input pair DF (CH2+,
CH3–) is (–2 × V_REF) to (+2 × V_REF)
ADG3
0 = The analog input range of single-end input CH3 (SE3) is 0 V to V_REF
1 = The analog input range is 0 V to (2 × V_REF)
ADG4 to ADG15
0 = The analog input range of CHn (where n = 4 to 15) is 0 V to V_REF
1 = The analog input range is 0 V to (2 × V_REF)
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