A switched-voltage high-accuracy sample/hold circuit

Abstract

In this paper, three switched-voltage (SV) sample/hold (S/H) circuits are presented to compensate for clock-feed-through (CFT) and channel-length modulation effect. They consist of a CMOS SV-delay cell. Thus, the configuration is very simple. The proposed circuits can be operated using simple nonoverlapping two phase clocks. The performance is verified by simulations on PSpice.