Reasons and solutions for device mismatch and structural mismatch in electronic circuits

Abstract. Integrated circuits have become one of the most popular industries in recent years, and more and more fields are interacting with it. With the passage of time, various new circuit designs have been created, and layout designs continue to advance. People are increasingly concerned about the accuracy and stability of devices, and the use of devices is also increasing. Circuit mismatch is starting to be a concern. This article based on three levels, discussed the most basic device-level resistor and capacitor mismatches at first, then talked about the circuit structures that improve the accuracy of capable circuits at the very top of the manufacturing process, which include the Current mirror structure and operational amplifier structure. Structure-based approaches to mismatch reduction have also been mentioned. In the end, the mainstream chopping and auto-zeroing techniques in circuit compensation are summarized, and prospects for proposing a solution system for circuit mismatch, make the adjustment clearer when solving problems.