Compact Pixel Architecture for CMOS Lateral Flow Immunoassay Readout Systems

Conference paper (2017)

Authors

Evdokia Pilavaki University College London
V. Valente University College London
Wouter Serdijn Bio-Electronics - EEMCS
Andreas Demosthenous University College London
Research Group
Bio-Electronics (EEMCS) (TU Delft)
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Published Date

2017

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Bio-Electronics

Abstract

A novel pixel architecture for CMOS image sensors is presented. It uses only one amplifier for both integration of the photocurrent and in-pixel noise cancelation, thus minimizing power consumption. The circuit is specifically designed to be used in readout systems for lateral flow immunoassays. In addition a switching technique is introduced enabling the use of column correlated double sampling technique in capacitive transimpedance amplifier pixel architectures without the use of any memory cells. As a result the reset noise which is crucial in these architectures can be suppressed. The circuit has been designed in a 0.35-μm CMOS technology and simulations are presented to show its performance.

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