VOUT AD9845B ADCOUT R" />
參數(shù)資料
型號: AD9845BJSTZRL
廠商: Analog Devices Inc
文件頁數(shù): 13/24頁
文件大?。?/td> 0K
描述: IC CCD SIGNAL PROC 12BIT 48LQFP
標(biāo)準(zhǔn)包裝: 2,000
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: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
REV.
B
–20–
AD9845B
CCD
CCDIN
BUFFER
VOUT
AD9845B
ADCOUT
REGISTER
DATA
SERIAL
INTERFACE
DIGITAL
OUTPUTS
DIGITAL IMAGE
PROCESSING
ASIC
TIMING
GENERATOR
V-DRIVE
CCD
TIMING
CDS/CLAMP
TIMING
0.1
F
Figure 32. System Applications Diagram
APPLICATIONS INFORMATION
The AD9845B is a complete analog front end (AFE) product
for digital still camera and camcorder applications. As shown in
Figure 32, the CCD image (pixel) data is buffered and sent to
the AD9845B analog input through a series input capacitor.
The AD9845B performs the dc restoration, CDS, gain adjust-
ment, black level correction, and analog-to-digital conversion.
The AD9845B’s digital output data is then processed by the
image processing ASIC. The internal registers of the
AD9845B—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.
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