The ICL7107 ADC operates with a 200mV configuration, where the analog ground is floating with respect to the power supply. This design necessitates isolating the power supply from the analog input to ensure accurate measurements. The reference voltage is connected between the 9V supply and the analog ground rather than the power supply ground to maintain this isolation and prevent interference.
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smuscat said:I am attempting to understand the 200mV configuration of th icl7107 (fig 1) in the datsheet attached. My question is the analogue ground shorted internally with the power of chip? or is it floating with respect to the supply? Thanks