參數(shù)資料
型號: AD9945KCPZ
廠商: Analog Devices Inc
文件頁數(shù): 4/14頁
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 32-LFCSP
標(biāo)準包裝: 1
類型: CCD 信號處理器,12 位
輸入類型: 邏輯
輸出類型: 邏輯
接口: 3 線串口
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ(5x5)
包裝: 管件
產(chǎn)品目錄頁面: 776 (CN2011-ZH PDF)
–12–
AD9945
APPLICATIONS INFORMATION
The AD9945 is a complete analog front end (AFE) product for
digital still camera and camcorder applications. As shown in
Figure 10, the CCD image (pixel) data is buffered and sent to the
AD9945 analog input through a series input capacitor. The
AD9945 performs the dc restoration, CDS, gain adjustment, black
level correction, and analog-to-digital conversion. The AD9945’s
digital output data is then processed by the image processing
ASIC. The internal registers of the AD9945—used to control
gain, offset level, and other functions—are programmed by the
ASIC or microprocessor through a 3-wire serial digital interface.
A system timing generator provides the clock signals for both the
CCD and the AFE.
CCD
CCDIN
BUFFER
VOUT
AD9945
ADCOUT
REGISTER-
DATA
SERIAL
INTERFACE
DIGITAL
OUTPUTS
DIGITAL IMAGE
PROCESSING
ASIC
TIMING
GENERATOR
V-DRIVE
CCD
TIMING
CDS/CLAMP
TIMING
0.1 F
Figure 10. System Applications Diagram
REV.
C
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