增益和带宽增强的ab类ota

2019 IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2019-08-01 DOI:10.1109/MWSCAS.2019.8885270

S. Pourashraf, J. Ramírez-Angulo, A. Roman-Loera, Manaswini Gangineni

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引用次数: 1

摘要

提出了具有增强增益带宽、开环增益、输出电流和转换率的高效ab类ota。它们基于一种通用增强技术(至少两倍)，并且还使用动态偏置级联晶体管来实现高增益和远大于偏置电流的输出电流。180nm CMOS测试芯片原型的测量结果验证了改进的有效性。

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Gain and Bandwidth Enhanced Class-AB OTAs

Efficient class-AB OTAs with enhanced gain bandwidth, open loop gain, output current, and slew rate are presented. They are based on a gm-boosting technique (at least factor of two) and also use dynamically biased cascode transistors to achieve high gain and output currents much larger than the bias current. Measurement results of 180 nm CMOS test chip prototypes validate the improvements.

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来源期刊

2019 IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS)

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