Consideration for a New Micromachined Accelerometer Capacitive Interface Based on Switched Flip-Flop Circuit

Abstract

In this paper, a new interface concept is described for the design of a closed-loop accelerometer based upon micromachined capacitive sensing element. In comparison to the ordinary approaches, the new interface only consists of a switched flip-flop circuit. The interface circuit is low in component count, which makes it particularly suitable for prototype evaluation. The theoretical considerations agree well with the simulation results in Matlab SIMULINK and experimental results