摘要
本文基于N阱0.5um DPTM CMOS工艺,完成了D类音频功放中积分器的设计。文章首先分析基于PWM调制D类功放中积分器的基本原理,然后着重介绍积分器中全差分运放的设计。在candence下的电路仿真表明,该运放的性能指标可以满足系统对积分器的要求。
The integrator in class D amplifer is presented,which is based on the N well 0.5um DPTM CMOS technology. After analyzing the principle of integrator in class D amplifier based on PWM modulation, this paper emphasizes on the design of fully-differential amplifier in the integrator. The circuit simulation in eandence shows that the performance of the amplifer can meet the requirement of the integrator in system.
出处
《微计算机信息》
北大核心
2008年第35期275-276,235,共3页
Control & Automation
基金
浙江省科技厅"浙江省引进消化吸收再创新重大项目"基金支持(2006C14036)
关键词
积分器
PWM
全差分运放
integrator
PWM
fully-differential amplifier.
