An On-Chip Power-Supply Noise Analyzer With Compressed Sensing and Enhanced Quan

Abstract

This article discusses the on-chip measurement of the power-supply noise (PSN) and demonstrates a scal- able PSN spectrum analyzer with significantly improved speed and accuracy. Compressed sensing is exploited in the autocovariance-based measurement since the cyclostation- ary PSN is sparse. A six-level voltage-controlled oscilla- tor (VCO)-based phase quantizer is proposed to improve the noise performance. The accumulation of measurement points is enhanced with multi-slice parallel quantization