A 3-320 fJ/conv.step Continuous Time Level Crossing ADC with Dynamic Self-Biasing Comparators Achieving 61.4 dB-SNDR

• DOI: 10.23919/vlsitechnologyandcir57934.2023.10185322
• Publication Date: 2023-07-24T17:36:33Z
• Authors: Martijn Timmermans; Marco Fattori; Pieter Harpe; Yao-Hong Liu; Eugenio Cantatore
• Keywords: Biasing

This paper presents a level crossing ADC (LC-ADC) for biomedical applications. The uses dynamically biased comparators, which require minimal power when the input voltage is far away from decision threshold. results in >10x better efficiency compared to prior LC-ADCs converting sparse signals. In 16 kHz bandwidth, LC-ADC achieves 61.4 dB SNDR resulting an of 3 fJ/conv.step