Noise analysis of a continuous-time auto-zeroed amplifier

摘要

The effect of auto-zeroing on the internal noise of ancontinuous-time auto-zeroed amplifier is analyzed and a set of empiricalnexpressions are developed which predict the important aspects of itsnnoise shaping behavior. The dependence of the output noise powernspectral density on the auxiliary signal path gain, nulling amplifiernbandwidth, and auto-zeroing clock frequency are all demonstrated. Thenresults are confirmed experimentally