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When the ADC is configured for >>>bipolar operation<<<, the output
code is offset binary with a negative full-scale voltage resulting
in a code of 000...000, a zero differential input voltage resulting
in a code of >>>100...000<<<, and a positive full-scale input voltage
resulting in a code of 111...111. The output code for any analog
input voltage can be represented as
Code = 2N – 1 Ч [(AIN/VREF) + 1]
where AIN is the analog input voltage and N = 16 for the
AD7792 and N = 24 for the AD7793.
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