PARALLEL FEEDFORWARD CLASS-AB CONTROL-CIRCUITS FOR LOW-VOLTAGE BIPOLAR RAIL-TO-RAIL OUTPUT STAGES OF OPERATIONAL-AMPLIFIERS

被引：6

作者：

RENIRIE, WCM ^{[1
]}

DELANGEN, KJ ^{[1
]}

HUIJSING, JH ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL,DEPT ELECT ENGN,ELECTR INSTRUMENTAT LAB,RES & TECH STAFF,DELFT,NETHERLANDS

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 1995年 / 8卷 / 01期

关键词：

ANALOG CIRCUIT DESIGN; OPERATIONAL AMPLIFIERS; LOW-VOLTAGE; LOW-POWER; CLASS-AB OUTPUT STAGES;

D O I：

10.1007/BF01239378

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A new family of class-AB control circuits for bipolar rail-to-rail output stages of operational amplifiers is presented. Step by step, we report the development of five simple class-AB control circuits showing the advantages of using parallel feedforward. The circuits have been designed in such a way that temperature, supply voltage and process parameters have little influence. To test the output stages, one of them has been implemented in a very simple two-stage operational amplifier on a semi-custom chip. Measurements show a bandwidth of 2.5 MHz, a gain of 40 dB, a quiescent current of 23 mu A and a maximum output current of 250 mu A. Simulation results of three other simple operational amplifiers with the new class-AB control circuits are shown, which have a higher gain and maximum output current.

引用

页码：37 / 48

页数：12

共 7 条

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