Noise and thermal stability of vibrating micro-gyrometers preamplifiers

TL;DR

This paper compares five preamplifier designs for vibrating micro-gyrometers, focusing on noise and thermal stability, and introduces an integrated preamplifier to enhance gain stability and reduce noise and size.

Contribution

It presents a comparative analysis of different preamplifier types and proposes an integrated design to improve stability and minimize noise and size.

Findings

Integrated preamplifier improves gain stability

Design reduces noise and size

Comparison highlights trade-offs among preamplifier types

Abstract

The preamplifier is a critical component of gyrometer's electronics. Indeed the resolution of the sensor is limited by its signal to noise ratio, and the gyrometer's thermal stability is limited by its gain drift. In this paper, five different kinds of preamplifiers are presented and compared. Finally, the design of an integrated preamplifier is shown in order to increase the gain stability while reducing its noise and size.