參數(shù)資料
型號(hào): XRD9825ACU
廠商: EXAR CORP
元件分類(lèi): 模擬信號(hào)調(diào)理
英文描述: 16-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO20
封裝: 5.30 MM, SSOP-20
文件頁(yè)數(shù): 8/33頁(yè)
文件大?。?/td> 309K
代理商: XRD9825ACU
XRD9825
8
Rev. 1.00
THEORY OF OPERATION
CIS Configuration (Contact Image Sensor)
The XRD9825 has two configurations for CIS applica-
tions. Each configuration is set by the control registers
accessed through the serial port.
Mode 1. DC Coupled
If the CIS does not have leading or trailing black pixels
as shown in Figure 2, then DC couple the CIS output to
the XRD9825 input.
Optically Shielded
Pixels
Valid Pixels
Figure 2. Typical Output CIS Mode
Adjust the offset of the CIS (-100 mV to 500 mV) by
setting the internal registers of the XRD9825 to set the
black pixel value when the LEDs of the CIS are off.
When the LEDs are on, use the XRD9825 Program-
mable Gain to maximize the ADCs dynamic range.
Figure 3, shows a typical application for a CIS with an
offset of -100mV to 500mV.
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相關(guān)代理商/技術(shù)參數(shù)
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XRD9825EVAL 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 XRD9825 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
XRD9826 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:16-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control
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