Research on Signal Conditioning Circuit of Hydrophone Based on MAX262

Hydrophone is an important part of sonar. But the output signal from hydrophone is weak, so hydrophone and signal conditioning circuit are usually used together. In this paper, a design scheme of signal conditioning circuit is proposed. After experimental verification, this method can obtain programmable gain of 1–1000 times. The filter frequency of band-pass filter can be set according to the requirement. And the corresponding indicators can meet the needs of hydrophone for signal conditioning.