Title :
Design of AGC amplifier for CMOS Image Sensor
Author :
Guoyi Yu ; Xuecheng Zou ; Le Zhang ; Qiming Zou ; Meijun Zheng ; Jianfu Zhong
Author_Institution :
Sch. of Opt. & Electron. Inf., Huazhong Univ. of Sci. & Techno logy, Wuhan, China
Abstract :
This paper designed an automatic gain control(AGC) amplifier for CMOS Image Sensor. The AGC amplifier adopts translinear variable gain amplifier (VGA) to realize a good linearity. It detects valley to present the strength of signal, and uses a succinct adjustment circuit to control the gain of VGA. A bandgap reference not needing start-up circuit was designed for the whole system. Simulated in SMIC 0.35um CMOS, it can compressed the dynamic range of 100kHz signal from 55.32dB to 7.36dB.
Keywords :
CMOS image sensors; amplifiers; automatic gain control; AGC amplifier; CMOS image sensor; SMIC; VGA; automatic gain control; design; succinct adjustment circuit; translinear variable gain amplifier; Decision support systems; Erbium; Radio frequency; Automatic gain control(AGC); CMOS Image Sensor; Valley detector(VD); tran slinear; variable gain amplifier(VGA);
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2012 IEEE International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2303-1
DOI :
10.1109/RFIT.2012.6401605
