Nonidealities of Switches in Switched Capacitor Circuitsc
Switched capacitor circuits are used in order to avoid large resistance in the circuit. These circuits
are used in ADC, DAC, filters and comparators. Implementing these with MOSFET results in nonidealities
compared to an ideal switch. This paper describes the nonidealities in switch capacitor circuits, charge
injection and clock feed through. Methods to reduce the effect of nonidealities are analysed and compared
using 90nm technology.
Index Terms— Charge injection, Clock feed through, Bottom plate sampling, Nonlinearirty.