DocumentCode
516745
Title
A Low Noise Thermoelectric Infrared Detector Microsystem in a Digital CMOS Technology
Author
Menolfi, Christian ; Huang, Qiuting ; Schneeberger, Niklaus
Author_Institution
Integrated Systems Laboratory, ETH Zÿrich, Gloriastr. 35, CH-8092 Zÿrich, Switzerland
fYear
1996
fDate
17-19 Sept. 1996
Firstpage
128
Lastpage
131
Abstract
A low noise sensor interface for low-frequency thermoelectric infrared sensor applications is described which uses chopper technique to reduce low-frequency noise and offset. The circuit has been integrated in a transistor-only 1 ¿m single-poly, n-well CMOS process. It features a gain of 52 dB with a 500 Hz bandwidth and a CMRR of more than 70 dB. The equivalent input noise is 15 nV/¿Hz and free from 1/f-noise. The input offset is 1.5 ¿V for a tuning error of less than 4 %. The resulting sensor system allows the detection of a minimum required radiation signal of below 120 nW/mm2. The amplifier consumes 1.3 mW.
Keywords
CMOS technology; Choppers; Infrared detectors; Infrared sensors; Integrated circuit technology; Low-frequency noise; Noise reduction; Sensor phenomena and characterization; Thermal sensors; Thermoelectricity;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 1996. ESSCIRC '96. Proceedings of the 22nd European
Conference_Location
Neuchatel, Switzerland
Print_ISBN
2-86332-197-8
Type
conf
Filename
5468608
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