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A picoampere A/D converter for biosensor applications.

Guy Rachmuth¹, Kuan Zhou, Joshua J C Monzon

¹Harvard-MIT Division of Health Science and Technology, MIT, Cambridge, MA 02139.

Sensors and Actuators. B, Chemical

|August 21, 2010

Summary

We developed a compact, low-power flash current-mode analog-to-digital converter (ADC) with high sensitivity. This design enables integration into microsensor systems for biological and chemical signal detection.

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Area of Science:

Electronics
Biomedical Engineering
Sensor Technology

Background:

Compact sensor systems are crucial for detecting biological and biochemical signals.
Low-power and compact analog-to-digital converter (ADC) systems are essential for these sensors.

Purpose of the Study:

To present a novel, highly sensitive flash current-mode ADC (IADC) design.
To enable integration of advanced ADC capabilities into small-scale sensor applications.

Main Methods:

Design and simulation of a flash current-mode ADC architecture.
Focus on achieving high sensitivity and low power consumption.

Main Results:

Demonstrated a highly sensitive IADC with a resolution down to 15 picoamperes (pA).
The IADC design exhibits small size and low-power characteristics.

Conclusions:

The developed IADC is suitable for integration into compact microsensor systems.
Enables stand-alone biological or chemical sensing applications requiring high sensitivity and low power.