A design of readout circuit for 384×288 uncooled microbolometer infrared focal plane array

Author

San-Lin Liu ; Ya-Cong Zhang ; Xiang-Yun Meng ; Wen-Gao Lu ; Zhong-Jian Chen

Author_Institution

Key Lab. of Microelectron. Devices & Circuits, Peking Univ., Beijing, China

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1

Lastpage

3

Abstract

A readout integrated circuit (ROIC) for uncooled infrared focal plane array (IRFPA) is presented in this paper. The ROIC is designed for a 384×288 detector array made of amorphous silicon microbolometers with a pixel-pitch of 35μm. A capacitive trans-impedance amplifier (CTIA) is used in each column to integrate the pixel signal. The design is tuned on a detailed theoretical analysis of the sensor signal and noise properties. The chip has been fabricated using a 0.35μm 2P4M CMOS process under 5V supply voltage. The ROIC can operate at a data rate of 7MHz, achieving a frame rate of 60Hz and the total power dissipation is less than 108m W. A 32×32 experimental chip has been tested.

Keywords

CMOS analogue integrated circuits; amorphous semiconductors; bolometers; focal planes; operational amplifiers; readout electronics; CMOS process; CTIA; IRFPA; ROIC; amorphous silicon microbolometers; capacitive trans-impedance amplifier; detector array; noise property; pixel signal; pixel-pitch; power dissipation; readout circuit; readout integrated circuit; sensor signal; size 0.35 mum; uncooled infrared focal plane array; uncooled microbolometer infrared focal plane array; voltage 5 V; Arrays; Bolometers; CMOS integrated circuits; Detectors; Imaging; Noise; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4673-2474-8

Type

conf

DOI

10.1109/ICSICT.2012.6467776

Filename

6467776