In dual-supply operation, the
output (pin 6) of the AD736 is at
0 V, that is, halfway between the
supply lines. But in single-supply
operation, the output is at
1/2 VCC. By adding a single-supply
op amp as a differential
amplifier, however, a true ‘O V
out for o V’ single-supply circuit
with a ground-referenced output
as shown in the diagram.
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