CMOS variable gain amplifier for gyroscope closed-loop driving

LIU Xiao-wei; QIAO Yu-hua; TAN Xiao-yun

doi:10.13873/j.1000-97872008.10.013

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CMOS variable gain amplifier for gyroscope closed-loop driving

更新时间：2025-09-11

- CMOS variable gain amplifier for gyroscope closed-loop driving
- Vol. 27, Issue 10, Pages: 89-91(2008)
- 作者机构：
  
  哈尔滨工业大学MEMS中心
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872008.10.013
  CLC： TN722
- Published：2008
- 稿件说明：
移动端阅览
[1]刘晓为,乔育花,谭晓昀.一种用于陀螺闭环驱动的CMOS可变增益放大器[J].传感器与微系统,2008,27(10):89-91.

LIU Xiao-wei, QIAO Yu-hua, TAN Xiao-yun. CMOS variable gain amplifier for gyroscope closed-loop driving[J]. 2008, 27(10): 89-91.
[1]刘晓为,乔育花,谭晓昀.一种用于陀螺闭环驱动的CMOS可变增益放大器[J].传感器与微系统,2008,27(10):89-91. DOI： 10.13873/j.1000-97872008.10.013.

LIU Xiao-wei, QIAO Yu-hua, TAN Xiao-yun. CMOS variable gain amplifier for gyroscope closed-loop driving[J]. 2008, 27(10): 89-91. DOI： 10.13873/j.1000-97872008.10.013.

摘要

采用0.5μm CMOS工艺设计了一种单极可变增益放大器。该可变增益放大器以Gilbert单元为原型

并通过设计指数电压产生电路来实现增益与控制电压在dB域呈线性关系。控制电压范围较宽

从1.5

.5 V变化时

实现了-2

5 dB的增益变化范围

最大增益时的3 dB带宽是19.045MHz。电源工作电压为5 V

电路功耗为1.7mW。

Abstract

A single variable gain amplifier（VGA） is designed by using 0.5μm CMOS technology.The VGA core cell is based on Gilbert cell.An exponential voltage generator is designed to obtain a wide exponential gain variation as a function of control voltage.The range of gain variation can be controlled from-2

5dB when control voltage varies from 1.5

.5V.The 3dB bandwidth is 19.045MHz at the maximum gain.The power consumption is 1.7mW at 5V supply voltage.

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references

一种指数增益控制型高线性CMOS中频可变增益放大器 [J]. 恽廷华,唐守龙,时龙兴. 半导体学报 . 2006(09)

模拟CMOS集成电路设计[M]. 西安交通大学出版社 , (美)毕查德·拉扎维（BehzadRazavi）著, 2003

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