A 4-MHz Bandwidth Continuous-Time Sigma-Delta Modulator With Stochastic Quantizer and Digital Accumulator

摘要

A 4-MHz bandwidth continuous-time (CT) sigma-delta modulator (SDM) is described. The CT-SDM employs a stochastic quantizer consisting of 63 comparators whose random input offset provides linear multi-bit quantization. The output of the stochastic quantize