Title :
Live demonstration: High fill factor CIS based on single inverter architecture
Author :
Sang-Jin Lee ; Kavehei, Omid ; Eshraghian, Kamran ; Cho, Kyoungrok
Author_Institution :
Coll. of Electr. & Comput. Eng., Chungbuk Nat. Univ., Cheongju, South Korea
Abstract :
This live demonstration presents a high fill factor 6 transistor per pixel CMOS image sensor (CIS) based on a single inverter that modulates light illumination to pulse width supporting ultra low supply voltage requirements. It has a compact readout circuitry for pulse-based signal processing without A/D converter at the output. A 64 × 64 pixel array was fabricated using 130 nm CMOS technology. The chip operated under a +VDD as low as 500 mV with power consumption of only 27 nW per pixel. The fill factor is 58%, which is significantly larger than those conventional CMOS imagers.
Keywords :
CMOS image sensors; analogue-digital conversion; signal processing; transistors; A/D converter; CMOS image sensor; high fill factor; light illumination; pulse-based signal processing; single inverter architecture; transistor per pixel; CMOS image sensors; CMOS integrated circuits; Computer architecture; Inverters; Lighting; Photodiodes;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6272142
