Analog Front-End Circuitry in Piezoelectric and Microphone Detection of Photoacoustic Signals
Analog Front-End Circuitry in Piezoelectric and Microphone Detection of Photoacoustic Signals
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DOI：
10.1007/s10765-014-1715-0
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发表时间：
2014-11-01
影响因子：
2.2
通讯作者：
Starecki, Tomasz
中科院分区：
文献类型：
--
作者：
Starecki, Tomasz
本文综述了用于带传声器或压电检测的光声设备的模拟前端电路。描述了前端的块结构以及压电传感器专用前置放大器和测量电容及驻极体麦克风的详细电路图。所提出的电路朝着低噪声工作方向进行了优化。对其余模拟模块的设计也给出了实用的说明。分析表明，有可能设计出一种规格与最佳商业解决方案相当的模拟前端。
This paper is a review of analog front-end circuitry used in photoacoustic equipment with microphone or piezoelectric detection. A block structure of the front end as well as detailed circuit diagrams of preamplifiers dedicated for piezoelectric sensors and measurement condenser and electret microphones are described. The presented circuits are optimized toward low-noise operation. Practical remarks regarding the design of the remaining analog blocks are also given. The analysis shows that it is possible to design an analog front end for which specifications will be comparable with the best commercial solutions.