Flexible and fully integrated 4-bit SAR ADC using metal-oxide TFTs

This paper presents a flexible fully integrated 4-bit successive approximation register (SAR) analog-to-digital converter (ADC), which is fabricated by unipolar n -type indium-zinc-oxide thin-film transistors. A bootstrap switch and a comparator with a pre-amplifier are proposed and employed to real...

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Bibliographic Details
Published in:Flexible and printed electronics 2024-06, Vol.9 (2), p.25003
Main Authors: Chen, Jun-Rong, Mei, Xiang-Lin, Hu, Yun-Feng, Zhou, Lei, Xu, Miao, Wang, Lei, Wu, Wei-Jing, Liu, Yu-Rong, Peng, Jun-Biao
Format: Article
Language:English
Subjects:
analog-to-digital converter
bootstrap switch
comparator
metal-oxide thin-film transistors (MO TFTs)
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Summary:This paper presents a flexible fully integrated 4-bit successive approximation register (SAR) analog-to-digital converter (ADC), which is fabricated by unipolar n -type indium-zinc-oxide thin-film transistors. A bootstrap switch and a comparator with a pre-amplifier are proposed and employed to realize the SAR ADC. The fabricated SAR ADC achieves a sampling rate of up to 20 kHz and a peak signal-to-noise and distortion ratio of 22.9 dB, corresponding to an effective-number-of-bits of 3.52 bits. The static performance of −0.58/+0.37 LSB DNL and −0.49/+0.39 LSB INL is achieved.
ISSN:2058-8585
2058-8585
DOI:10.1088/2058-8585/ad3ce8