Low Noise Amplifier for Integrated Angular Acceleration Sensor

被引：0

作者：

Belousov, Egor ^{[1
]}

Solodkov, Alexey ^{[1
]}

Kruglov, Yuri ^{[1
]}

Anchutin, Stepan ^{[2
]}

Mikheev, Andrei ^{[2
]}

机构：

[1] Natl Res Univ Elect Technol MIET, Telecommun Syst Dept, Moscow, Russia

[2] Natl Res Univ Elect Technol MIET, Microelect Dept, Moscow, Russia

来源：

2014 6TH INTERNATIONAL CONGRESS ON ULTRA MODERN TELECOMMUNICATIONS AND CONTROL SYSTEMS AND WORKSHOPS (ICUMT) | 2014年

关键词：

Chopping; Chopper Amplifier; Continious-time amplifier; 1/f noise; CMOS analog integrated circuits; operational amplifiers;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a two stage low noise chopper amplifier for integrated angular acceleration sensor signal processing circuit which consists of amplifiers, phase-locked loop and automatic gain control. Capacitor feedback amplifier circuit is one of the most suitable for CMOS technology however capacitor amplifier with chopped op-amp has poor low frequency performance because of parasitic resistive coupling between inputs of the op-amp. In presented amplifier modulators are placed outside capacitive feedback which improves noise and gain performance. Proper gain distribution between stages contributes to minimizing output noise and phase shift. Chopper ripple is of no concern because of low pass filters in phase-locked loop in signal processing circuit. Proposed circuit is designed in 0.18 CMOS technology. The chopper amplifier consumes 1.75 mA current. Input referred noise voltage at 15 kHz is 8.2 0.6 degrees.

引用

页码：637 / 640

页数：4

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