Title :
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
fDate :
12/1/1996 12:00:00 AM
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;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
