采用多径频率补偿的通用运放的设计与实现

2011 IEEE 9th International New Circuits and systems conference Pub Date : 2011-06-26 DOI:10.1109/NEWCAS.2011.5981266

P. Fiedorow, P. Maige, D. Subiela, T. Tixier, N. Abouchi

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引用次数: 3

摘要

介绍了一种通用运算放大器的多径频率补偿方法。首先论述了通用运放的要求，并介绍了电流电路中频率补偿的需求。在此基础上，建立了opamp中多径积分规则，给出了传递函数，并与嵌套米勒补偿进行了比较。其次，描述了多路径嵌套米勒补偿的实现。最后给出了仿真结果，验证了该补偿方法的有效性。多径补偿改进了经典补偿结构，因为它不截断初始单位增益频率4倍，而只截断2倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design and implementation of general purpose opamp using multipath frequency compensation

This paper shows the multipath frequency compensation in a general purpose operational amplifier. Firstly, it deals with the requirements of a general purpose opamp and introduces the need of the frequency compensation in the current circuits. Then, the rules to integrate multipath in an opamp are developed and the transfer function is presented and compared to the one of the nested miller compensation. Next, an implementation of the multipath nested miller compensation is described. Finally, simulation result which proves the efficiency of this compensation is given. The multipath compensation improves the classical compensation structure as it does not cutoff the initial unity gain frequency by four but only by two.

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2011 IEEE 9th International New Circuits and systems conference

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