Published January 20, 2023 | Version v1
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High current efficiency classAB OTA with high open loop gain and enhanced bandwidth

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Description

An efficient class-AB OTA with enhanced output current, slew rate, open loop gain, and gain bandwidth is presented. The circuit is based on a class-AB input stage with adaptive biasing, and an output stage with dynamically biased cascode transistors. It can deliver output currents 100 times larger than the bias current with a total quiescent power dissipation of 72 µW. Measurement results of a 180 nm CMOS test chip prototype show slew rate, gain bandwidth, and open loop gain enhancement.

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URL
https://idus.us.es/handle//11441/141632
URN
urn:oai:idus.us.es:11441/141632