US 11,750,206 B2
System and method for analog-to-digital signal conversion
Ming Ding, Eindhoven (NL); Martijn Timmermans, Eindhoven (NL); and Pieter Harpe, Waalre (NL)
Assigned to Stichting IMEC Nederland, Eindhoven (NL)
Filed by Stichting IMEC Nederland, Eindhoven (NL)
Filed on Dec. 28, 2021, as Appl. No. 17/563,635.
Claims priority of application No. 21150013 (EP), filed on Jan. 4, 2021.
Prior Publication US 2022/0216879 A1, Jul. 7, 2022
Int. Cl. H03M 1/10 (2006.01)
CPC H03M 1/1014 (2013.01) 20 Claims
OG exemplary drawing
 
1. A system for analog-to-digital signal conversion comprising:
an analog input signal;
a digital-to-analog converter configured to generate a reference signal;
an amplifier configured to amplify an error signal comprising a difference between the analog input signal and the reference signal;
a level-crossing based sampling circuit comprising a first comparator configured to compare the error signal with respect to a first reference level, and a second comparator configured to compare the error signal with respect to a second reference level, thereby generating event-based reset signals corresponding to a plurality of sampling instances in order to reset the digital-to-analog converter and further to shift the first reference level and the second reference level through the digital-to-analog converter; and
a trigger circuit configured to generate reset signals asynchronous to the event-based reset signals in order to reset the digital-to-analog converter.