摘要
针对麦克风应用,设计一种全集成、高精度的可编程放大器电路。该电路采用电容增益以及高通滤波器的设计方法,无须片外去耦合电容,实现可编程增益放大器的单片集成。可编程增益放大器电路采用SMIC0.13μm1P8MCMOS工艺实现。完成后仿真结果表明,在电源电压1V,增益18dB,输入信号频率2kHz,峰峰值50mV时,可编程增益放大器动态范围达到73dB,总谐波失真64dB,整体功耗206μW,满足麦克风全集成、高精度的应用需求。
A fully - integrated,high - resolution programmable gain amplifier (PGA) circuit is presented for microphone application. The circuit adopts capacitor - gain and high - pass filter design method,and does not need the external input - decoupling capacitors,which can realize the monolithic integration of PGA. The PGA circuit is implemented with SMIC 0.13 μm 1P8M CMOS process. The simulation results show that the power supply is 1 V,the gain is 18 dB,the input frequency is 2 kHz, the peak-to-peak value is 50 mV,the dynamic range(DR)of PGA is 73 dB,the total harmonic distortion(THD)is 64 dB, and the total power is 206 μW,which can meet the full integration and high resolution application requirements of microphone.
作者
阮剑剑
魏聪
陈铖颖
RUAN Jianjian;WEI Cong;CHEN Chengying(School of Opto-electronic and Communication Engineering,Xiamen University of Technology,Xiamen 361024,China;Fujian Key Laboratory of Optoelectronic Technology and Devices,Xiamen 361024,China)
出处
《现代电子技术》
北大核心
2019年第13期173-176,共4页
Modern Electronics Technique
基金
国家自然科学基金(61704143)
福建省自然科学基金(2018J01566)
福建省中青年教师教育科研项目(JT180433)
厦门理工学院高层次人才项目(YKJ17019R)~~
关键词
麦克风
全集成
高精度放大器
可编程增益放大器
晶体管
数字信号处理
microphone
full integration
high-precision amplifier
programmable gain amplifier
transistor
digital signal processing
