高速全差分CMOS运算放大器

Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144) Pub Date : 2000-08-08 DOI:10.1109/MWSCAS.2000.952872

A. Younis, M. Hassoun

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引用次数: 22

摘要

提出了一种高速全差分折叠级联码运算放大器。运算放大器采用全差分升压放大器来增加运放的开环增益。该运放具有由开关电容电路和连续时间CMFB电路组成的CMFB电路。升压放大器具有连续时间cmfb。该放大器采用台积电0.25 u数字CMOS工艺设计，电源为2.5 V，直流增益为81 dB，单位增益频率为680 MHz，功耗为30 mW。

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A high speed fully differential CMOS opamp

A high-speed fully differential folded cascode operational amplifier is presented. The operational amplifier uses fully differential boosting amplifiers to increase the open loop gain of the opamp. The opamp has a CMFB circuit that is made of a switched capacitor circuit and a continuous time CMFB circuit. The boosting amplifiers have continuous time CMFBs. The opamp is designed in TSMC 0.25 u digital CMOS process with 2.5 V power supply and achieved a dc gain of 81 dB with a 680 MHz unity gain frequency and 30 mW power consumption.

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Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144)

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