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Title: A 10-bit 300 kS/s reference-voltage regulator free SAR ADC for wireless-powered implantable medical devices
Authors: Yang, Yongkui
Zhou, Jun
Liu, Xin
Goh, Wang Ling
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Low Power
Issue Date: 2018
Source: Yang, Y., Zhou, J., Liu, X., & Goh, W. L. (2018). A 10-bit 300 kS/s reference-voltage regulator free SAR ADC for wireless-powered implantable medical devices. Sensors, 18(7), 2131-. doi:10.3390/s18072131
Series/Report no.: Sensors
Abstract: This paper presents a reference-voltage regulator free successive-approximation-register analog-to-digital converters (SAR ADC) with self-timed pre-charging for wireless-powered implantable medical devices. Assisted by a self-timed pre-charging technique, the proposed SAR ADC eliminates the need for a power-hungry reference-voltage regulator and area-consuming decoupling capacitor while maintaining insensitivity to the supply voltage fluctuation. Fabricated with a 0.18-µm complementary metal–oxide–semiconductor (CMOS) technology, the proposed SAR ADC achieves a Signal To Noise And Distortion Ratio (SNDR) of 53.32 dB operating at 0.8 V with a supply voltage fluctuation of 50 mVpp and consumes a total power of 2.72 µW at a sampling rate of 300 kS/s. Including the self-timed pre-charging circuits, the total figure-of-merit (FOM) is 23.9 fJ/conversion-step and the total area occupied is zero point one zero five millimeter square.
ISSN: 1424-8220
DOI: 10.3390/s18072131
Rights: © 2018 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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