A Fully Differential CMOS Potentiostat
- Creators
- Nazari, Meisam Honarvar
- Genov, Roman
Abstract
A CMOS potentiostat for chemical sensing in a noisy environment is presented. The potentiostat measures bidirectional electrochemical redox currents proportional to the concentration of a chemical down to pico-ampere range. The fully differential architecture with differential recording electrodes suppresses the common mode interference. A 200μm×200μm prototype was fabricated in a standard 0.35μm standard CMOS technology and yields a 70dB dynamic range. The in-channel analog-to-digital converter (ADC) performs 16-bit current-tofrequency quantization. The integrated potentiostat functionality is validated in electrical and electrochemical experiments.
Additional Information
© 2009 IEEE.Attached Files
Published - Nazari2009p10002Iscas_2009_Ieee_International_Symposium_On_Circuits_And_Systems_Vols_1-5.pdf
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Additional details
- Eprint ID
- 18730
- Resolver ID
- CaltechAUTHORS:20100618-092336430
- Created
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2010-06-29Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field