公开(公告)号：US20120242411A1

公开(公告)日：2012-09-27

申请号：US13428456

申请日：2012-03-23

Applicant: Po-Yu TSENG ,  Jin-Lin Huang ,  Keko-Chun Liang

Inventor： Po-Yu TSENG ,  Jin-Lin Huang ,  Keko-Chun Liang

IPC: H03F3/04 ,  H03F3/68

CPC classification number: H03F3/72 ,  H03F1/0277 ,  H03F3/45183 ,  H03F2200/411 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2203/45366 ,  H03F2203/45506

Abstract: An operational amplifier providing an output voltage signal to drive a load in response to an input voltage signal is provided. The operational amplifier includes a first input stage and a second input stage, a second stage and an output enable switch. The first input stage provides a first intermediate signal according to the voltages of an input and an output voltage signals in a transitional state. The second input stage provides a second intermediate signal according to the input and the output voltage signals in a steady state. The second stage provides the output voltage signal to an output node according to the first and the second intermediate signals in the transitional and the steady states respectively. The output enable switch is enabled in an output enable period to drive the load with the output voltage signal.

Abstract translation: 提供了提供输出电压信号以响应于输入电压信号来驱动负载的运算放大器。 运算放大器包括第一输入级和第二输入级，第二级和输出使能开关。 第一输入级根据输入的电压和处于过渡状态的输出电压信号提供第一中间信号。 第二输入级根据稳定状态下的输入和输出电压信号提供第二中间信号。 第二级分别根据过渡和稳态中的第一和第二中间信号将输出电压信号提供给输出节点。 输出使能开关在输出使能期间使能，以输出电压信号驱动负载。