Imperial College London
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Professor Pantelis Georgiou

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Biomedical Electronics
 
 
 
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Contact

 

+44 (0)20 7594 6326pantelis Website

 
 
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Location

 

902Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Cacho-Soblechero:2018:10.1109/BIOCAS.2018.8584662,
author = {Cacho-Soblechero, M and Lande, TS and Georgiou, P},
doi = {10.1109/BIOCAS.2018.8584662},
title = {A fully-digital ISFET front-end with In-Pixel ΣΔ Modulation},
url = {http://dx.doi.org/10.1109/BIOCAS.2018.8584662},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - This paper presents a fully-digital pixel architecture for ISFET-based sensing. The sensed pH is transformed to the frequency domain through a Chemically Controlled Oscillator (CCO), generating a digital clock which is then modulated onto a noise-shaped PWM signal through a 1-blt Frequency-to-Digital ΣΔ Modulator (FDSM). The proposed architecture achieves a sensitivity of 536 Hz/pH at center frequency of 2.48 MHz. Implemented using 0.35μm CMOS technology, the pixel architecture occupies 75 μm × 75 μm with a power consumption of 66μW. This pixel can be fully scaled to deeper sub-micron technologies, potentially reaping benefits in terms of speed, area and power consumption.
AU  - Cacho-Soblechero,M
AU  - Lande,TS
AU  - Georgiou,P
DO  - 10.1109/BIOCAS.2018.8584662
PY  - 2018///
TI  - A fully-digital ISFET front-end with In-Pixel ΣΔ Modulation
UR  - http://dx.doi.org/10.1109/BIOCAS.2018.8584662
ER  -
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