A 3.2 mW mixed-signal readout circuit for an organic vertical nanojunctions sensor

Chang-Po Chao*, Chin I. Su, Trong Hieu Tran, Hsiao-Wen Zan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A new sensitivity organic vertical nano-junctions (VNJ) sensor for ammonia detection and its readout system are presented in this study. The designed ammonia sensor, VNJP3HT diode, is a simple structure with real-time response, high reproducibility and low-cost sensor. Along with the designed sensor, a precision and robust readout circuit is designed and successfully implemented as the proposed chip in this study. To utilize for a novel organic bio-chip, a particular readout system is presented that can acquire signal, compute and display concentration values of ammonia without using microcontroller. The chip is fabricated by the TSMC 0.18-μm 1P6M 3.3V mixedsignal CMOS process technique for verification. Experiment results show that the average resolution is 70.48mV/log(ppm) in a short transient time response, 50 seconds, as compared to prior study, 200 seconds. Error rate, average noise and detection rate reliability are 2.86%, 123 μVrms, and 99.6%, respectively. This chip could be suitable for application in cars, cell phones, watches, etc.

Original languageEnglish
Title of host publicationASME 2016 Conference on Information Storage and Processing Systems, ISPS 2016
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791849880
DOIs
StatePublished - 1 Jan 2016
EventASME 2016 Conference on Information Storage and Processing Systems, ISPS 2016 - Santa Clara, United States
Duration: 20 Jun 201621 Jun 2016

Publication series

NameASME 2016 Conference on Information Storage and Processing Systems, ISPS 2016

Conference

ConferenceASME 2016 Conference on Information Storage and Processing Systems, ISPS 2016
CountryUnited States
CitySanta Clara
Period20/06/1621/06/16

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