Title
Mostly Passive Delta - Sigma ADC with a-IGZO TFTs for Flexible Electronics
Abstract
This paper presents a novel mostly passive Delta-Sigma ADC using amorphous Indium Gallium Zinc Oxide (a-IGZO) thin-film transistors (TFTs). The ADC circuit consists of passive elements (resistors and capacitors), a novel dynamic comparator, a D-Flip Flop and a pseudo-CMOS BS inverter. In-house oxide TFT model is used for circuit simulations in Cadence environment. The proposed ADC results in effective-number-of-bits (ENOB) of 11.2 bits and a figure-of-merit (FOM) of 0.15 mu J/conversion step at 2 kHz sampling frequency with a 10 V power supply. This circuit would find potential applications in biomedical wearable systems, in which, the ADC is probably the most important block.
Year
DOI
Venue
2021
10.1109/ISCAS51556.2021.9401704
2021 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)
Keywords
DocType
ISSN
Delta-Sigma ADC, a-IGZO TFTs, Dynamic Comparator, D-Flip Flop, Pseudo-CMOS BS Inverter
Conference
0271-4302
Citations 
PageRank 
References 
0
0.34
0
Authors
6
Name
Order
Citations
PageRank
Nishtha Wadhwa101.01
Pydi Bahubalindruni214.15
Ana Correia311.76
João Goes48827.95
Sujay Deb534022.80
Pedro Barquinha600.34