Title :
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
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 ¿¿ modulator; successive approximation ADC;
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
DOI :
10.1109/VLSIC.2007.4342736
