参数资料
型号: AD9945KCPZ
厂商: Analog Devices Inc
文件页数: 4/14页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 32-LFCSP
标准包装: 1
类型: CCD 信号处理器,12 位
输入类型: 逻辑
输出类型: 逻辑
接口: 3 线串口
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ(5x5)
包装: 管件
产品目录页面: 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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AD9945KCPZ 制造商:Analog Devices 功能描述:CCD Signal Processor IC
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