Noise analysis of a continuous-time auto-zeroed amplifier

Author

Finvers, Ivars G. ; Haslett, James W. ; Trofimenkoff, F.N.

Author_Institution

Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada

Volume

43

Issue

12

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

791

Lastpage

800

Abstract

The effect of auto-zeroing on the internal noise of a continuous-time auto-zeroed amplifier is analyzed and a set of empirical expressions are developed which predict the important aspects of its noise shaping behavior. The dependence of the output noise power spectral density on the auxiliary signal path gain, nulling amplifier bandwidth, and auto-zeroing clock frequency are all demonstrated. The results are confirmed experimentally

Keywords

CMOS analogue integrated circuits; instrumentation amplifiers; integrated circuit design; integrated circuit modelling; integrated circuit noise; auto-zeroing clock frequency; auxiliary signal path gain; continuous-time auto-zeroed amplifier; empirical expressions; internal noise; noise power spectral density; noise shaping behavior; nulling amplifier bandwidth; output noise; Bandwidth; Clocks; Frequency measurement; Low-frequency noise; Low-noise amplifiers; Noise measurement; Noise shaping; Shape; Signal processing; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.553395

Filename

553395