Research on Track/Hold Circuit Based on Feedback Compensation

摘要

This article mainly starts from improving the accuracy and speed of AC measurement, and conducts simulation research on the tracking/holding circuit. According to the switching characteristics of the switch tube, a track/hold circuit model is constructed. Based on this model, the error source and linearity performance are analyzed, and the track and hold circuit is improved. Finally, a track-and-hold circuit based on feedback compensation is designed to achieve a better match between accuracy and speed, and the simulation results of the two circuits are compared to verify that the circuit can accurately implement the sample-and-hold function.