公开(公告)号：US20220077868A1

公开(公告)日：2022-03-10

申请号：US17524542

申请日：2021-11-11

Applicant: Analog Devices, Inc.

Inventor： Jesper STEENSGAARD-MADSEN ,  Andrew J. THOMAS

IPC: H03M1/10 ,  H03M1/42 ,  H03M1/44

Abstract: Disclosed herein are some examples of analog-to-digital converters (ADCs) that can perform auto-zeroing with amplifying a signal for improvement of a signal-to-noise ratio. The ADCs may produce a first digital code to represent an analog input signal and a second digital code based on a residue from the first digital code, and may combine the first digital code and the second digital code to produce a digital output code to represent the analog input signal. The ADC may utilize a first observation and a second observation of an analog residue value representing the residue to produce the second digital code.