A high voltage zero-static current voltage scaling ADC interface circuit for micro-stimulator

Paul Jung Ho Lee, Denis Guangyin Chen, Amine Bermak, Man Kay Law

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper describes a SAR ADC interface circuit, where the input sensing voltage from a bipolar high voltage domain is linearly translated into the low voltage domain where the SAR ADC operates. The proposed interface circuit employs the principle of charge transfer amplifier to deliver information between two different power domains, in one step, without static power consumption, even if both domains do not share the the same ground voltages. To implement the charge transfer scheme using standard asymmetric LDMOS, we propose a novel dynamic body biased high voltage transmission gate. Prototype simulation using a standard 24V BCDMOS process shows that the proposed circuit draws 2.12μW of power when it senses a voltage that swings between +10V and -10V at 1 kSPS sampling frequency.

Original languageEnglish
Title of host publication2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1380-1383
Number of pages4
ISBN (Print)9781479934324
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC, Australia
Duration: 1 Jun 20145 Jun 2014

Other

Other2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
CountryAustralia
CityMelbourne, VIC
Period1/6/145/6/14

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Lee, P. J. H., Chen, D. G., Bermak, A., & Law, M. K. (2014). A high voltage zero-static current voltage scaling ADC interface circuit for micro-stimulator. In 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 (pp. 1380-1383). [6865401] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2014.6865401