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    (ISSN: 2306-8515, e-ISSN 1726-5479)

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Vol. 18, Special Issue, January 2013, pp. 33-46

 

Selected papers from the 3rd International Conference on Sensor Device Technologies and Applications (SENSORDEVICES' 2012)
and The 6th International Conference on Sensor Technologies and Applications (SENSORCOMM' 2012),

19 - 24 August 2012, Rome, Italy

 

Bullet

 

Design of a Sigma-Delta Interface for Heat Balanced Bolometer
 
Matthieu DENOUAL, Damien BROUARD, Arthur VEITH, Mathieu POULIQUEN, Olivier de SAGAZAN, Patrick ATTIA, Gilles ALLEGRE

GREYC-ENSICAEN, 6 bd Maréchal Juin, 14050 Caen, France

ENSICAEN, 6 bd Maréchal Juin, 14050 Caen, France

IETR University of Rennes, Campus Beaulieu, 35000 Rennes, France

NXP-Semiconductors, Campus Effiscience, 14460 Colombelles, France

Tel.:+33 (0)2 31 45 26 92, +33 (0)2 31 45 26 98

E-mail: mdenoual@greyc.ensicaen.fr

 

Received: 19 November 2012   /Accepted: 14 December 2012   /Published: 22 January 2013

Digital Sensors and Sensor Sysstems

 

Abstract: This paper presents the design of a sigma-delta interface for a heat balanced bolometer. The sigma-delta interface acts both as digital readout circuit and as a mean of heat feedback. The heat balancing is based on the Electrical Substitution principle and implementation through capacitive coupling. The design from the functional block down to the layout is presented. Expected performance of the realized chip is evaluated through transistor level circuit simulation and top-simulations. The circuit is designed for a realization in AMS CMOS 0.35 µm technology operating at 3.3 V.

 

Keywords: Bolometer, Heat balanced, Electrical substitution, Sigma-delta modulator

 

 

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