An Asynchronous Zero-Crossing-Based Incremental Delta-Sigma Converter
Journal
2022 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2022 - Proceedings
Date Issued
2022
Author(s)
Abstract
A 20 Hz 2nd-order discrete-time incremental sigma-delta modulator with 1-bit quantizer is proposed by utilizing zero-crossing-based integrator with asynchronous clock system. This prototype fabricated in a UMC 28 nm HPC Plus CMOS technology, achieving 11.5-bit ENOB at 40 S/s conversion rate with an over-sampling ratio (OSR) of 256, and yielded a Schreier FoM of 165.5 dB. The modulator occupies an active area smaller than 0.105 mm2 and consumes 141.1 nW. © 2022 IEEE.
Subjects
asynchronous; delta-sigma modulator; high resolution; Incremental delta-sigma data converter; low power; zero-crossing-based circuits
Other Subjects
Delta sigma modulation; Low power electronics; Modulators; Asynchronoi; Data converter; Delta-sigma; Delta-sigma converters; Discrete time; High resolution; Incremental delta-sigma data converter; Low Power; Zero-crossing-based circuit; Zero-crossings; Timing circuits
Type
conference paper