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A simple and accurate CMOS sample-and-hold circuit using dual output-OTA
Author(s)
Date Issued
January 1, 2020
Type
Article
Abstract
A new CMOS sample-and-hold (S/H) circuit using dual output-operational transconductance amplifier (DO-OTA), one resistor and one capacitor is presented. It is unlike conventional S/H circuit. The proposed circuit has not use a switched-capacitor, switched-current or MOS switches for on-off switch but it uses an on-off DO-OTA by bias current that replace them. The proposed S/H circuit is high speed on-off status of switch and without buffer circuit can be obtained. However, it is a very simple circuit, high accuracy, low-power consumption and suitable for signal processing applications by using on the first part of analog to digital converter. The simulation results are used to confirm the workability of the proposed circuit.
Citation
Przeglad Elektrotechniczny, 96(10), 163-166, 2020