A sigma delta ISFET readout circuit for Lab-on-Chip applications

Ghazal Nabovati, Ebrahim Ghafarzadeh, Falah Awwad, Mohamad Sawan

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

5 Citations (Scopus)

Abstract

This paper presents a new ISFET readout interface circuitry for Lab-on-Chip applications. The proposed circuit features a dedicated DC-input sigma delta modulator converting the detected charge to 1-bit digital series. The proposed circuit, designed in 0.35-μm CMOS technology, offers a biologically relevant, high pH dynamic range of 5 to 9 and high sensitivity of 800mV/pH. We demonstrate the features of the proposed circuit by simulations and we discuss the advantage of this low complexity circuit for the measurement of pH using an array of ISFETs suitable for a variety of chemical and biological applications.

Original languageEnglish
Title of host publication2013 IEEE 11th International New Circuits and Systems Conference, NEWCAS 2013
DOIs
Publication statusPublished - Sep 10 2013
Event2013 IEEE 11th International New Circuits and Systems Conference, NEWCAS 2013 - Paris, France
Duration: Jun 16 2013Jun 19 2013

Publication series

Name2013 IEEE 11th International New Circuits and Systems Conference, NEWCAS 2013

Other

Other2013 IEEE 11th International New Circuits and Systems Conference, NEWCAS 2013
Country/TerritoryFrance
CityParis
Period6/16/136/19/13

ASJC Scopus subject areas

  • Hardware and Architecture

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