Datasheet

AD7811/AD7812
–9–REV. B
Table I. AD7811 Channel Configurations
V
IN4
/AGND DIF/SGL CH1 CH0 Description
0000 V
IN1
Single-Ended with Respect to AGND
0001 V
IN2
Single-Ended with Respect to AGND
0010 V
IN3
Single-Ended with Respect to AGND
0011 V
IN4
Single-Ended with Respect to AGND
1000 V
IN1
Pseudo Differential with Respect to V
IN4
1001 V
IN2
Pseudo Differential with Respect to V
IN4
1010 V
IN3
Pseudo Differential with Respect to V
IN4
X1 00 V
IN1
(+) Pseudo Differential with Respect to V
IN2
(–)
X1 01 V
IN3
(+) Pseudo Differential with Respect to V
IN4
(–)
X 1 1 0 Internal Test. SAR Input Equal to V
REF
/2
X 1 1 1 Internal Test. SAR Input Equal to V
REF
Table II. AD7812 Channel Configurations
V
IN8
/AGND DIF/SGL CH2 CH1 CH0 Description
0 0 000 V
IN1
Single-Ended with Respect to AGND
0 0 001 V
IN2
Single-Ended with Respect to AGND
0 0 010 V
IN3
Single-Ended with Respect to AGND
0 0 011 V
IN4
Single-Ended with Respect to AGND
0 0 100 V
IN5
Single-Ended with Respect to AGND
0 0 101 V
IN6
Single-Ended with Respect to AGND
0 0 110 V
IN7
Single-Ended with Respect to AGND
0 0 111 V
IN8
Single-Ended with Respect to AGND
1 0 000 V
IN1
Pseudo Differential with Respect to V
IN8
1 0 001 V
IN2
Pseudo Differential with Respect to V
IN8
1 0 010 V
IN3
Pseudo Differential with Respect to V
IN8
1 0 011 V
IN4
Pseudo Differential with Respect to V
IN8
1 0 100 V
IN5
Pseudo Differential with Respect to V
IN8
1 0 101 V
IN6
Pseudo Differential with Respect to V
IN8
1 0 110 V
IN7
Pseudo Differential with Respect to V
IN8
X 1 000 V
IN1
(+) Pseudo Differential with Respect to V
IN2
(–)
X 1 001 V
IN3
(+) Pseudo Differential with Respect to V
IN4
(–)
X 1 010 V
IN5
(+) Pseudo Differential with Respect to V
IN6
(–)
X 1 011 V
IN7
(+) Pseudo Differential with Respect to V
IN8
(–)
X 1 1 0 0 Internal Test. SAR Input Equal to V
REF
/2
X 1 1 0 1 Internal Test. SAR Input Equal to V
REF