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

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 ΣΔ modulator is encoded using a successive approximation ADC. The ADC has been integrated in 0.18-μm CMOS technology and...

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Bibliographic Details
Main Authors: Agah, Ali, Vleugels, Katelijn, Griffin, Peter B., Ronaghi, Mostafa, Plummer, James D., Wooley, Bruce A.
Format: Conference Proceeding
Language:English
Subjects:
A/D conversion
bio-sensing
Bioinformatics
Bioluminescence
Biosensors
CMOS image sensors
CMOS technology
Genomics
Image converters
incremental Σ Δ modulator
Quantization
Sensor arrays
Signal resolution
successive approximation ADC
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Description
Summary: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 ΣΔ modulator is encoded using a successive approximation ADC. The ADC has been integrated in 0.18-μm CMOS technology and achieves a dynamic range of 90.1dB and a peak SNDR of 86.3dB at a conversion rate of 1MSample/sec with 38mW power consumption.
ISSN:2158-5601
2158-5636
DOI:10.1109/VLSIC.2007.4342736