An integrated circuit design for piezoelectric acoustic microsensors

被引：0
|
作者：
Qin, JY [1 ]
Lan, MJ [1 ]
Tan, XY [1 ]
Liu, XW [1 ]
机构：
[1] Harbin Inst Technol, MEMS Ctr, Harbin 150001, Peoples R China
来源：
PROCEEDINGS OF THE 2004 CHINA-JAPAN JOINT MEETING ON MICROWAVES | 2004年
关键词：
piezoelectric; acoustic sensor; charge amplifier; AGC;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents the design for integrated processing circuit of piezoelectric acoustic sensor. The first amplify stage of the circuit system is realized by charge amplifier, and the second amplify stage consists of the peak-value detecting block, comparator, amplifier with AGC (Automatic gain control) function. The simulation results show that the gain of the signal conditioning circuit is up to 53dB, and the system can detect the signals from 0.02 to 20mV produced by acoustic sensor.
引用
收藏
页码：643 / 648
页数：6
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