Patent ID: 9178529
Filing Date: 2015-11-03
Classification: H03M,H04L,H04M

Abstract:
1. A multi-stage noise-shaping (MASH) analog-to-digital converter (ADC) for converting an analog input signal to a digital output signal, the MASH ADC comprising: a front-end delta-sigma modulator for receiving the analog input signal as input to a loop filter of the front-end delta-sigma modulator and digitizing the analog input signal to produce a first intermediate digital output signal; and a back-end delta-sigma modulator for receiving an error of the front-end delta-sigma modulator, wherein the error is a difference between the analog input signal and the first intermediate digital output signal, and digitizing the error to produce a second intermediate digital output signal; wherein the digital output signal of the MASH ADC is produced from the first intermediate digital output signal and the second intermediate digital output signal.