Title :
A Low Noise CMOS Preamplifier for Quartz-Based Gyro-Meter
Author :
Zhang, M. ; Llaser, N.
Author_Institution :
Univ. of Paris XI - CNRS, Orsay
Abstract :
In this paper, a low noise preamplifier used for a quartz-based gyro-meter is proposed. The preamplifier is based on charge amplifier. Unlike a traditional charge amplifier, which needs a high value of feedback resistance to stabilize its operation, the stability of the proposed preamplifier is ensured by resetting of the feedback capacitor periodically. As a result, the proposed preamplifier is simple in structure, small in die area, low in folding noise and sensitive in current sensing. Theoretical analysis and the choice of the resetting signal are discussed in detail Simulation results show that the input current can be as low as 200 fA.
Keywords :
CMOS integrated circuits; feedback amplifiers; low noise amplifiers; preamplifiers; quartz; feedback resistance; low noise CMOS preamplifier; quartz-based gyrometer; Capacitance; Capacitors; Feedback; Low-noise amplifiers; Operational amplifiers; Preamplifiers; Resonance; Resonant frequency; Signal analysis; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-1377-5
Electronic_ISBN :
978-1-4244-1378-2
DOI :
10.1109/ICECS.2007.4511245
