Piezoelectric sensor conditioning circuit and piezoelectric sensor conditioning circuit board

The utility model relates to a piezoelectric sensor conditioning circuit and a piezoelectric sensor conditioning circuit board, which are used for converting charge signals into voltage signals and outputting the voltage signals in a differential way, and comprise a charge amplification circuit, a voltage conversion circuit, a voltage conversion circuit and a voltage conversion circuit, the voltage conversion module is used for converting a charge signal output by a piezoelectric sensor into a voltage signal; the low-frequency bootstrap circuit is connected with the charge amplifying circuit and is used for improving the low-frequency characteristic of a signal output by the charge amplifying circuit; and the differential mode signal amplification circuit is connected with the output end of the charge amplification circuit and is used for amplifying the voltage signal output by the charge amplification circuit and then outputting the amplified voltage signal. The voltage signal finally output by the piezoelec