A Switched-Capacitor Integrator with Sample and Hold Function

A switched-capacitor integrator with S/H function was proposed in this circuit,which was realized by the gain-boosting folded cascade OTA.Based on 65 nm CMOS process,HSPICE simulation results showed that,the integrator can keep the same level in the sampling and integral phase,which was used to sample and hold the input signal,for input signal of 10 kHz with V_pp=1.4V,the SHA had a THD of-112dB at a sampling frequency of 6.144MHz.