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2006•Unpublished venueRequires access

Bias Offset Correction Technique For Uncooled Infrared Bolometer Sensor Readout IC

Sang Joon Hwang Sang Won Park

Open publisher page 2 citations

Abstract

Infrared bolometer sensor's variation is detected by voltage drop between a reference resistor and a bolometer resistor in this architecture. One of the serious problems in this architecture is that these resistors value has a process variation. So common-mode level could be different from expectation value in room temperature. Different common-mode level could lead to wrong output at the end of readout circuit. We suggest useful method to solve this problem. Difference correction using capacitor has reduced CM level difference to 88.5 % for I MΩ bolometer and reference resistor's 10 % variation.

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What this paper is about

Infrared bolometer sensor's variation is detected by voltage drop between a reference resistor and a bolometer resistor in this architecture. One of the serious problems in this architecture is that these resistors value has a process variation. So common-mode level could be different from expectation value in room temperature. Different common-mode level could lead to wrong output at the end of readout circuit. We suggest useful method to solve this problem. Difference correction using capacitor has reduced CM level difference to 88.5 % for I MΩ bolometer and reference resistor's 10 % variation.

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OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Infrared bolometer sensor's variation is detected by voltage drop between a reference resistor and a bolometer resistor in this architecture. One of the serious problems in this architecture is that these resistors value has a process variation. So common-mode level could be different from expectation value in room temperature. Different common-mode level could lead to wrong output at the end of readout circuit. We suggest useful method to solve this problem. Difference correction using capacitor has reduced CM level difference to 88.5 % for I MΩ bolometer and reference resistor's 10 % variation.

Key concepts: Bolometer, Resistor, Capacitor, Offset (computer science), Process variation, Optoelectronics, Biasing, Voltage drop

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