公开(公告)号：US20030112077A1

公开(公告)日：2003-06-19

申请号：US10322205

申请日：2002-12-17

Applicant: STMicroelectronics S.A.

Inventor： Frederic Goutti ,  Vincent Rabary

IPC: H03F001/52

CPC classification number: H03F1/52

Abstract: An amplifier including first, second, and third series-connected stages, the third stage including a MOS output transistor having its source or drain forming an output terminal of the amplifier, including means for detecting the transition from a first operating state of the output transistor in which the drain current varies little with the voltage between the drain and the source to a second state in which the drain current varies substantially proportionally to the voltage between the drain and the source; and means for, upon detection of such a transition, having the voltage gain of the amplifier and/or the product between the bandwidth of the amplifier and the voltage gain of the amplifier at the upper limit frequency of the bandwidth drop.

Abstract translation: 一种包括第一，第二和第三串联级的放大器，所述第三级包括具有形成所述放大器的输出端的源极或漏极的MOS输出晶体管，包括用于检测从所述输出晶体管的第一工作状态转变的装置 其中漏极电流随着漏极和源极之间的电压变化到第二状态，其中漏极电流基本上与漏极和源极之间的电压成比例地变化; 以及用于在检测到这种转变时，具有在放大器的带宽和放大器的带宽与放大器的电压增益之间的电压增益在带宽下降的上限频率的情况下的放大器和/或乘积的电压增益的装置。