In this project, we design a fully-differential operational transconductance amplifier to be used in the first stage of a high resolution pipelined A/D converter. The circuit is realized with a two-stage amplifier design. The first stage is a telescopic cascode stage, followed by a common source second stage. It’s demonstrated that this circuit meets all the design specification while achieving low power consumption, which is less than 10mW. This OTA achieve a large DC gain and high swing output of above 2.2V.
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2022-10-25
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