DocumentCode
1281748
Title
Digitally-controlled automatic gain control circuits for CMOS CCD camera interface
Author
Cha, You-Jin ; Lee, Seung-Hoon ; Lee, Jin-Kug
Author_Institution
Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea
Volume
35
Issue
22
fYear
1999
fDate
10/28/1999 12:00:00 AM
Firstpage
1909
Lastpage
1910
Abstract
Automatic gain control circuit (AGC) design techniques for CMOS CCD camera interface systems are described. The required gain of the proposed AGC is controlled directly by digital bits. The amplifying function of the AGC is divided into three stages for high-speed operation. A capacitor-segment combination technique considerably improves the effective bandwidth of the AGC. While the three-stage prototype shows 32 dB AGC dynamic range in 1/8 dB steps, the proposed two-stage AGC reduces the power and chip area further
Keywords
CCD image sensors; CMOS integrated circuits; automatic gain control; high-speed integrated circuits; integrated circuit design; CMOS CCD camera interface; amplifying function; capacitor-segment combination technique; chip area; digitally-controlled automatic gain control circuits; effective bandwidth; high-speed operation; three-stage prototype;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19991327
Filename
811044
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