公开(公告)号：US5406145A

公开(公告)日：1995-04-11

申请号：US160812

申请日：1993-12-03

申请人： Masanobu Arai ,  Noriaki Edasawa

发明人： Masanobu Arai ,  Noriaki Edasawa

IPC分类号： H03F1/30 ,  H03F3/30 ,  G06G7/10

CPC分类号： H03F1/308 ,  H03F3/3001

摘要： A push-pull-type amplifier circuit has three current mirror circuits CM1, CM2, CM3 and transistors M6, M7 connected between a reference current supply I.sub.R and output transistors M2, M3 for controlling an idling current flowing through the output transistors M2, M3 so as to be proportional to a current flowing through the reference current supply I.sub.R so that the idling current will be stabilized irrespective of variations in a power supply voltage. An operational amplifier which incorporates the push-pull-type amplifier circuit as an output stage circuit is highly stable in operation, and can be designed in a simple arrangement without having to take into account power supply voltage variations.

摘要翻译： 推挽型放大器电路具有连接在参考电流源IR和输出晶体管M2，M3之间的三个电流镜电路CM1，CM2，CM3和晶体管M6，M7，用于控制流过输出晶体管M2，M3的空转电流，以便 与流过参考电流源IR的电流成比例，使得怠速电流将稳定，而与电源电压的变化无关。 将推挽式放大器电路作为输出级电路并入的运算放大器在操作中高度稳定，并且可以以简单的布置设计，而不必考虑电源电压变化。