A 6-Bit Analog-to-Digital Converter for Electromyography Implemented Using N-Type Metal-Oxide Thin-Film Transistors

Consisting of more than 2000 n-type metal-oxide thin-film transistors (TFTs), a 6-bit analog-to-digital converter (ADC) adopting the subranging architecture is designed, fabricated, characterized and applied to digitize an electromyogram (EMG). Consisting of amplifiers each with a feedback stage for...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2023-09, Vol.70 (9), p.1-1
Main Authors: Liu, Xuchi, Shi, Runxiao, Xia, Zhihe, Wong, Man
Format: Article
Language:English
Subjects:
Amplification
Analog to digital converters
Analog-digital conversion
analog-to-digital converter (ADC)
compensation circuit
Electromyography
electromyography (EMG)
Fabrication
Gain
indium-gallium-zinc oxide (IGZO)
Logic gates
Low temperature
Metal oxides
Nonlinearity
Nonuniformity
Semiconductor devices
Substrates
Thin film transistors
thin-film transistor (TFT)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Consisting of more than 2000 n-type metal-oxide thin-film transistors (TFTs), a 6-bit analog-to-digital converter (ADC) adopting the subranging architecture is designed, fabricated, characterized and applied to digitize an electromyogram (EMG). Consisting of amplifiers each with a feedback stage for gain-boosting, the comparators at the heart of the ADC incorporate a scheme for compensating the offset error arising from the inevitable non-uniformity of the TFT parameters. Compared to the specifications of reported ADCs based on TFTs, a higher sampling rate of 1000 S/s, a smaller differential non-linearity of 0.76 least-significant bit (LSB) and a smaller integral non-linearity of 0.88 LSB are achieved. Since the same low-temperature TFT technology for fabricating the EMG acquisition system on a flexible substrate is used to construct the ADC, the two could be readily monolithically integrated.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2023.3266504