Title :
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
fDate :
Oct. 29 2012-Nov. 1 2012
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;
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
DOI :
10.1109/ICSICT.2012.6467776
