A High-Resolution Low-Power Oversampling ADC with Extended-Range for Bio-Sensor Arrays

Author

Agah, Ali ; Vleugels, Katelijn ; Griffin, Peter B. ; Ronaghi, Mostafa ; Plummer, James D. ; Wooley, Bruce A.

Author_Institution

Stanford Univ., Stanford

fYear

2007

Firstpage

244

Lastpage

245

Abstract

A calibration-free, high-resolution ADC designed for bioluminescence sensing employs an extended-counting architecture in which the residual error from a second-order incremental SigmaDelta modulator is encoded using a successive approximation ADC. The ADC has been integrated in 0.18-mum CMOS technology and achieves a dynamic range of 90.1 dB and a peak SNDR of 86.3 dB at a conversion rate of 1MSample/sec with 38 mW power consumption.

Keywords

CMOS integrated circuits; bioluminescence; biosensors; low-power electronics; sensor arrays; sigma-delta modulation; CMOS technology; bio-sensor arrays; bioluminescence sensing; extended-counting architecture; high-resolution low-power oversampling ADC; power 38 mW; power consumption; residual error; second-order incremental SigmaDelta modulator; size 0.18 mum; Bioinformatics; Bioluminescence; Biosensors; CMOS image sensors; CMOS technology; Genomics; Image converters; Quantization; Sensor arrays; Signal resolution; A/D conversion; bio-sensing; incremental Â¿Â¿ modulator; successive approximation ADC;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 2007 IEEE Symposium on

Conference_Location

Kyoto

Print_ISBN

978-4-900784-05-5

Electronic_ISBN

978-4-900784-05-5

Type

conf

DOI

10.1109/VLSIC.2007.4342736

Filename

4342736