Abstract
In this paper a modified peak detector and sample hold (PDSH) circuit is proposed for analog front-end read out chain. This PDSH circuit captures the energy of a sensor output of analog read out chain. The circuit is designed in 180 nm CMOS technology. The proposed PDSH offers wide range (almost 1.8 V of wide input range) of input amplitude (from 0.5 V to 2.3 V) with maximum 10mV offset variation. Peak overshoot error is 0.9 percent for signal with high amplitude. The PDSH block also been modified to decouple the redundancy between slew rate and offset.
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