High speed linear variable gain amplifier architecture

Invention Grant

US06727755B2 High speed linear variable gain amplifier architecture 有权

Title translation: 高速线性可变增益放大器架构

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Patent Title: High speed linear variable gain amplifier architecture
Patent Title (中): 高速线性可变增益放大器架构
Application No.: US10014730

Application Date: 2001-12-10
Publication No.: US06727755B2

Publication Date: 2004-04-27
Inventor: Muhammad Islam , Herman Theodorus , Kambiz Hayat-Dawoodi
Applicant: Muhammad Islam , Herman Theodorus , Kambiz Hayat-Dawoodi
Main IPC: H03F345
IPC: H03F345

High speed linear variable gain amplifier architecture

Abstract:

A two stage amplifier circuit (10), the first stage (12) comprising a modified quad configuration and the second stage (14) comprising a translinear current amplifier configuration. The present invention achieves the advantages of fast response time, low distortion and improved bandwidth. The current gain of the second stage is represented by: (IAout1−IAout2)/(Iout1−Iout2)=(1+R123/R124)·(I135/I134)·(A/(1+A)) where A=gmQ109·R124.

Abstract(Chinese):

一种双级放大器电路（10），所述第一级（12）包括修改的四通道配置，所述第二级（14）包括跨导线电流放大器配置。本发明实现了响应时间快，失真小，带宽提高的优点。第二阶段的当前增益由下式表示：其中A = gmQ109.R124。

Public/Granted literature

US20030107437A1 High speed linear variable gain amplifier architecture Public/Granted day:2003-06-12

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