公开(公告)号：US20010026194A1

公开(公告)日：2001-10-04

申请号：US09778677

申请日：2001-02-07

Applicant: STMicroelectronics S.r.I.

Inventor： Luciano Tomasini ,  Giancarlo Clerici

IPC: H03F003/18

CPC classification number: H03F3/3001

Abstract: An operational amplifier includes a first stage, and a second stage with an input connected to an output of the first stage and an output connected to a load. The second stage includes between its input and its output a first signal path for driving the load in a first direction, and a second signal path for driving the load in the opposite direction. The first and second signal paths have substantially equal gains for small signals, substantially equal output impedances for small and large signals, and substantially equal output-current capabilities.

Abstract translation: 运算放大器包括第一级和第二级，其输入端连接到第一级的输出端，输出端连接到负载。 第二级在其输入和输出之间包括用于沿第一方向驱动负载的第一信号路径和用于沿相反方向驱动负载的第二信号路径。 第一和第二信号路径对于小信号具有基本上相等的增益，对于小信号和大信号基本相等的输出阻抗以及基本相等的输出电流能力。