Design of a High Precision Integrated charge detection circuit based on Quartz Gyroscope

摘要

Used Three-stage op amp to design a good performance CMOS integrated charge detection based on quartz gyroscope. In the circuit design, using the PMOS full-differential input and the folded cascade structure, through adjusting the transistor parameters to reduce noise and improve the gain;;.Set each transistor's parameters based on 0.5um CMOS process, use H-Spice software in detection circuit and demodulation circuit for simulation, parameter adjustment and verification.