An 89.3% Current Efficiency, Sub 0.1% THD Current Driver for Electrical Impedance Tomography
An 89.3% Current Efficiency, Sub 0.1% THD Current Driver for Electrical Impedance Tomography
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An%2089.3%%20Current%20效率,%20Sub%200.1%%20THD%20Current%20Driver%20for%20Electrical%20Impedance%20断层扫描
DOI:
10.1109/tcsii.2023.3294753
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Li J
中科院分区:
文献类型:
--
作者:
Li J
Accurate electrical impedance tomography (EIT) measurements require a current driver with low total harmonic distortion (THD) and high output impedance. Conventional EIT current drivers attain good performance for these parameters but at the expense of low current efficiency. This Brief presents a differential current driver based on a current feedback structure with isolated common-mode feedback, achieving very low THD, high output impedance and high current efficiency. In addition, it uses current DACs to remove any dc offsets at the output nodes. The current driver was fabricated in a 65-nm CMOS technology with 3.3 V supply. Measured results demonstrate a THD of 0.05% and 0.1% at 80 kHz, forandoutput current, respectively. The total current consumption is 1.54 mA, resulting in a maximum current efficiency of 89.3%. The measured output impedance is 1.023at 500 kHz and 568at 1 MHz.
DOI:
10.1109/icecs202256217.2022.9971123
发表时间:
2022
期刊:
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影响因子:
--
作者:
Li J
通讯作者:
Li J
DOI:
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发表时间:
2011
期刊:
IEEE Transactions on Circuits and Systems Part 1: Regular Papers
影响因子:
--
作者:
A. Worapishet;A. Demosthenous;Xiao Liu
通讯作者:
Xiao Liu
DOI:
--
发表时间:
2019
期刊:
IEEE Transactions on Circuits and Systems - II - Express Briefs
影响因子:
--
作者:
Seokki Hong;Dong
通讯作者:
Dong