To meet requirement of signal acquisition and algorithm of piezoelectric micro solid modal gyroscope

design a digital detection system with high precision and high sampling frequency based on FPGA.The principle and realization approach are presented.The main control chip of FPGA uses XC6SLX25 and ADC adopts AD7960chip（18-bit

5MSPS）.It is verifred by test that the prototype can acquire three-path output signals of the gyroscope at the same time

and sends the processed data to upper PC for displaying.The measured resonant frequencies is stabilize around 349.89 k Hz

fluctuating range is 8 Hz.The mean square error of reference voltage Vpp is 0.004 V.The detection system is stable and has high precision.This digital detection circuit can be well applied for MEMS microgyroscope signal processing and enhances the stability and anti-jamming of microgyroscope.