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A Study on Double Sampling Design of CMOS ROIC for Uncooled Bolometer Infrared Sensor using Reference Signal Compensation Circuit

Authors :
Ju-Hyun Oh
Eun-Sik Jung
Man-Young Sung
Young-Seok Bae
Source :
Journal of the Korean Institute of Electrical and Electronic Material Engineers. 23:89-92
Publication Year :
2010
Publisher :
The Korean Institute of Electrical and Electronic Material Engineers, 2010.

Abstract

A bolometer sensor used in an infrared thermal imaging system has many advantages on the process because it does not need a separate cooling system and its manufacturing is easy. However the sensitivity of the bolometer is low and the fixed pattern noise(FPN) is large, because the bolometer sensor is made by micro electro mechanical systems (MEMS). These problems can be fixed-by using the high performance readout integrated circuit(ROIC) with noise reduction techniques. In this paper, we propose differential delta sampling circuit to remove the mismatch noise of ROIC itself, the FPN of the bolometer. And for reduction of FPN noise, the reference signal compensation circuit which compensate the reference signal by using on-resistance of MOS transistor was proposed.

Details

ISSN :
12267945
Volume :
23
Database :
OpenAIRE
Journal :
Journal of the Korean Institute of Electrical and Electronic Material Engineers
Accession number :
edsair.doi...........8aee8e1e6e770feb0e52afd3b84ef130
Full Text :
https://doi.org/10.4313/jkem.2010.23.2.089