采用间接补偿技术的三级运算放大器设计程序

2014 International Conference on Advanced Technologies for Communications (ATC 2014) Pub Date : 2014-10-01 DOI:10.1109/ATC.2014.7043482

S. T. Nguyen, T. T. Bui

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引用次数: 3

摘要

本文介绍了一种采用间接补偿技术的运算放大器的设计方法。它为设计运算放大器提供了一步一步的指导。然后设计了一个三级Opamp作为实例。该Opamp采用0.18μm CMOS技术，在30pF的大容性负载CL下实现了90dB以上的开环增益、70MHz增益带宽积(GBW)和68°相位裕度(PM)。电源电压为1.8V，功耗为826.45μW。

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A design procedure for three-stage operational amplifier using indirect compensation technique

This paper presents a design procedure for the operational amplifier (Opamp) using indirect compensation technique. It provides a step-by-step guideline for designing an operational amplifier. Then a three-stage Opamp has been designed as an example. This Opamp achieves an open loop gain above 90dB, 70MHz gain-bandwidth product (GBW) and 68° phase margin (PM) at large capacitive load CL of 30pF in a 0.18μm CMOS technology. The supply voltage Opamp is 1.8V with the power dissipation of 826.45μW.

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2014 International Conference on Advanced Technologies for Communications (ATC 2014)

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