Errors and Their Cancellation in ADC Using Switched Capacitors Technique

Abstract:- This paper describes some error cancellation approaches used in ADC exploiting switched capacitor (SC) technique to compensate arising analog errors. In these errors besides mainly capacitor-mismatch, finite gain of OpAmp, charge injection in switches, clock feedthrough in switches, OpAmp input capacitance and parasitic capacitors. The details of the approaches are described and discussed in this paper. Key-Words: Switched capacitors, ADC, error cancellatio