A CMOS readout integrated circuit with wide dynamic range for a CNT bio-sensor array system

Author

Lee, Hyunjoong ; Lee, Hyongmin ; Woo, Jong-Kwan ; Kim, Sunkwon ; Park, Young June ; Kim, Suhwan

Author_Institution

Electr. Eng., Seoul Nat. Univ., Seoul, South Korea

fYear

2011

fDate

1-3 Aug. 2011

Firstpage

357

Lastpage

360

Abstract

We present a sensor readout integrated circuit for the CNT bio-sensor array, the heart of which is our low-power current-input continuous-time ΔΣ modulator that is capable of dynamic range extension. Experimental results show that the prototype chip, designed and fabricated in 0.18μm CMOS process, achieves a dynamic range of 87.746dB and has a readout rate of 160kHz, which guarantees 1k sample/s per each sensor. It consumes 8.94μW/cell considering the 16×10 sensors and its core area is 0.085mm².

Keywords

CMOS integrated circuits; biomedical electronics; biomedical equipment; biosensors; carbon nanotubes; cardiology; low-power electronics; CMOS processing; CMOS readout integrated circuit; CNT biosensor array system; dynamic range extension; low-power current-input continuous-time modulator; prototype chip; sensor readout integrated circuit; wide dynamic range; Arrays; Carbon nanotubes; Dynamic range; Immune system; Modulation; Signal to noise ratio; Voltage control; CMOS; bio-sensor; carbon nanotube; current-input; delta-sigma; dynamic range; readout integrated circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Low Power Electronics and Design (ISLPED) 2011 International Symposium on

Conference_Location

Fukuoka

ISSN

Pending

Print_ISBN

978-1-61284-658-3

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/ISLPED.2011.5993664

Filename

5993664