Title :
Tunable injection current compensation architecture for high fill-factor self-buffered active pixel sensor
Author :
Chang, Hsien-Chun ; King, Ya-Chin
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
A high fill-factor self-buffered active pixel sensor and a tunable injection current compensation architecture for high dynamic range imager is proposed for scaled CMOS technology. The new cell, including a photodiode, is formed by n-well and p-type substrate and a single-transistor output buffer can achieve fill-factor of 55%. Dynamic range of up to 120 dB is projected by simulation results. Experimental results for the new structure and simulated design of the circuit are discussed in this work.
Keywords :
CMOS image sensors; buffer circuits; circuit CAD; circuit simulation; circuit tuning; compensation; integrated circuit design; integrated optoelectronics; photodiodes; CMOS image sensor; high fill-factor self-buffered active pixel sensor; imager dynamic range; n-well/p-type substrate; photodiode; scaled CMOS technology; simulated circuit design; simulation; single-transistor output buffer; tunable injection current compensation architecture; CMOS image sensors; CMOS technology; Circuit simulation; Costs; Diodes; Dynamic range; Equivalent circuits; Pixel; Tunable circuits and devices; Voltage;
Conference_Titel :
ASIC, 2002. Proceedings. 2002 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-7363-4
DOI :
10.1109/APASIC.2002.1031542
