參數(shù)資料
型號(hào)： XRD98L62
廠商： Exar Corporation
英文描述： CCD Image Digitizers with CDA，PGS and 12-Bit A/D(CCD圖像數(shù)字轉(zhuǎn)換器（帶CDA，PGS和12位A/D轉(zhuǎn)換器）)
中文描述： 與綜合發(fā)展區(qū)，和12的PGS CCD圖像數(shù)字轉(zhuǎn)換器，位A / D（防治荒漠化公約圖像數(shù)字轉(zhuǎn)換器（帶地帶素類和12位的A / D轉(zhuǎn)換器））
文件頁(yè)數(shù)： 19/37頁(yè)
文件大小： 394K
代理商： XRD98L62
19
Rev. P2.00
XRD98L62
Preliminary
Direct PGA Input Mode
The inputs to the PGA can be accessed directly
(bypassing the CDS) through the Test1 & Test2 pins.
This mode is very useful for testing the PGA gain and
linearity. To enable the Direct PGA Input mode, write
a “1” to the NoCDS bit in the Control register of the
serial interface. This will disconnect the CDS from the
PGA input and turn on the switches that connect the
Test1 & Test2 pins to the PGA.
In this mode the SBLK and SPIX clocks must be
clocked, due to the switched capacitor architecture of
the second PGA stage. ADCLK must be provided to
digitize the PGA output. The analog PGA output
cannot be monitored, it does not come out to any pin.
The calibration logic should be put into the Hold mode,
or into the ManCAL mode. The Coarse offset correc-
tion DAC does not affect the Direct PGA inputs, but the
Fine offset correction DAC does affect the PGA out-
put. The calibration logic is not “aware” that the Coarse
DAC is not active, and thus could cause errors if left
operating automatically.
Figure 7. Direct PGA Input Timing
Input Signal
Test1-Test2
SPIX
ADCLK
Input Sampled
PGA tracks
Input Signal
ADC tracks
PGA output
Input Sampled
SBLK
non-overlap
相關(guān)PDF資料
PDF描述
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XRK32308CD-1 3.3V ZERO DELAY BUFFER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRD98L62ACV 制造商:EXAR 制造商全稱:EXAR 功能描述:CCD Image Digitizers with CDS, PGA and 12-Bit A/D
XRD98L62ACV-F 功能描述:視頻 IC RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
XRD98L62EVAL 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 XRD98L62 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
XRD98L62ZEVAL 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Eval Board (Solder) XRD98L62AIV RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
XRD98L63 制造商:EXAR 制造商全稱:EXAR 功能描述:CCD Image Digitizers with CDS, PGA and 12-Bit A/D
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