一篇rail－to－rail op的论文

gogoll681

A Compact Power-Efficient 3 V CMOS Rail-to-Rail Input/Output Operational Amplifier for VLSI Cell Libraries
Ron Hogervorst, John P. Tero, Ruud G. H. Eschauzier, and Johan H. Huijsing

Abstract— This paper presents a two-stage, compact, powerefficient 3 V CMOS operational ampiifier with rail-to-rail input and output ranges. Because of its small dle area of 0.04 mmz, it is very suitable as a VLSI library cell, The floatlng class-AB control is shifted into the summing circuit, which results in a noise and offset of the amplifier wh]ch are comparable to that of a three stage amplifier. A floating current source biases the combined summing circuit and the class-AB control. This current source has the same structure as the class-AB control which provides a power supply-independent quiescent current. Using the compact architecture, a 2.6 MHz amplifier with Miller compensation and a 6.4 MHz amplifier with cascoded-Miller compensation has been realized. The opamps have, respectively, a bandwidth-to-supplypower ratio of 4 MHz/mW and 11 MHz/mW for a capacitive load of 10 pF.

[ 本帖最后由 gogoll681 于 2008-9-1 10:44 编辑 ]

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leifty

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jcchan

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hhsis

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auch0311

谢谢

martian618

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igolaps

thanks