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參數資料
| 型號： | AD9937 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | CCD Signal Processor with Precision Timing⑩ Generator |
| 中文描述： | CCD信號處理器精確定時⑩發生器 |
| 文件頁數： | 20/44頁 |
| 文件大小： | 410K |
| 代理商： | AD9937 |
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REV. 0
–20–
AD9937
SYSTEM OVERVIEW
Figure 8 shows the typical system block diagram for the AD9937.
The CCD output is processed by the AD9937
’
s AFE circuitry,
which consists of a CDS, VGA, black level clamp, and A/D
converter. The digitized pixel information is sent to the digital
image processor chip, which performs the postprocessing and
compression. To operate the CCD, all CCD timing parameters
are programmed into the AD9937 from the system micropro-
cessor, through the 3-wire serial interface. From the system
master clock, VCKM provided by the image processor or exter-
nal crystal, the AD9937 generates all of the CCD
’
s horizontal
and vertical clocks and all internal AFE clocks.
CCD
BUFFER
V
OUT
AD9937
ADC
OUT
REGISTER
DATA
DIGITAL IMAGE
PROCESSING
ASIC
TIMING
GENERATOR
V-DRIVE
CCDIN
SERIAL
INTERFACE
DIGITAL
OUTPUTS
CCD
TIMING
0.1 F
C
IN
Figure 8. Typical System Block Diagram, Master Mode
The H-drivers for H1(A
–
D) and H2(A,B), and RS are included
in the AD9937, allowing these clocks to be directly connected
to the CCD. H-drive voltage of up to 3.6 V is supported. An
external V-driver is required for the vertical transfer clocks and
sensor gate pulses.
Figure 9 shows the horizontal and vertical counter dimensions
for the AD9937. All internal horizontal and vertical clocking is
programmed using these dimensions to specify line and pixel
locations.
12-BIT HORIZONTALCOUNTER = 4096 PIXELS MAX
1
MAXIMUM FIELD DIMENSIONS
Figure 9. Horizontal and Vertical Counters
VD
HD
MAX VD LENGTH IS 2048 LINES
MAX HD LENGTH IS 4095 PIXELS
VCKM
Figure 10. Maximum VD/HD Dimensions
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9937BCPZ-24 | 制造商:Analog Devices 功能描述: |
| AD9937BCPZ-27 | 功能描述:IC CCD SIGNAL PROC/GEN 制造商:analog devices inc. 系列:* 零件狀態:上次購買時間 標準包裝:1 |
| AD9937BCPZRL-24 | 制造商:Analog Devices 功能描述: |
| AD9937BCPZRL-27 | 功能描述:IC CCD SIGNAL PROC/GEN 制造商:analog devices inc. 系列:* 零件狀態:上次購買時間 標準包裝:1 |
| AD9937KCP | 制造商:Analog Devices 功能描述:AFE Video 1ADC 10-Bit 3V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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