Rev. 2.00 ADC Data C lip p e r O u tp u t 0 4096 2048 511 0 511 4096 Figure 10. Hot Pixel Clipper Pixel Averager After the clipper," />
參數(shù)資料
型號(hào)： XRD98L61AIV-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 15/38頁(yè)
文件大小： 0K
描述： IC CCD DIGITIZER 12BIT 48TQFP
標(biāo)準(zhǔn)包裝： 250
位數(shù)： 12
通道數(shù)： 1
電壓 - 電源，模擬： 2.7 V ~ 3.6 V
電壓 - 電源，數(shù)字： 2.7 V ~ 3.6 V
封裝/外殼： 48-TQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 托盤(pán)
XRD98L61
22
Rev. 2.00
ADC Data
C
lip
p
e
r
O
u
tp
u
t
0
4096
2048
511
0
511
4096
Figure 10. Hot Pixel Clipper
Pixel Averager
After the clipper, the logic takes an average of Optical
Black pixels. The number of pixels to be averaged can
be selected as one of the following: 4, 8, 16, 32, 64, 128,
256, or 512. The AVG[2:0] bits in the Calibration
register are used to program the number of pixels to
average. This averaging function filters out noise and
prevents image artifacts. The calibration logic will
average OB pixels over as many lines as required to
get the programmed number of pixels to average.
Table 4. Programming the Pixel Averager
Offset Difference
Next, the Offset register value, OB[7:0], is subtracted
from the OB pixel average. If the difference is positive,
the offset DACs are adjusted to reduce the effective
ADC output code. If the difference is negative, the
offset DACs are adjusted to increase the effective
ADC output code. The FAST_CAL and DNS options
will affect how the DAC adjustments are made.
Coarse & Fine Accumulators
The Coarse and Fine Accumulators are the registers
which hold the digital codes for the Coarse and Fine
Offset DACs. The Offset DAC adjustments are made
by adding or subtracting to the value in the Fine
accumulator. If there is an overflow or underflow in the
Fine Accumulator, the Fine Accumulator is reset to its
mid-scale value, and the Coarse Accumulator is
incremented or decremented accordingly.
Hot Pixel Clipper
CCD’s occasionally have hot pixels. These are defec-
tive pixels, which always output a bright level. To
ensure the Black Level is not affected by hot pixels in
the OB area, the Hot Pixel Clipper limits pixel data from
the ADC to a maximum value of 511 (1FFh). This
clipping only affects the data used by the internal
calibration logic. Data on the ADC output bus,
DB[11:0], is not clipped.
AVG[2]
AVG[1]
AVG[0]
# of Pixels to Average
0
4 (Not recommended)
0
1
8 (Not recommended)
0
1
0
16 (Not recommended)
0
1
32
1
0
64
1
0
1
128 (default)
1
0
256
1
512
相關(guān)PDF資料
PDF描述
XRD98L62ACV-F IC CCD DIGITIZER 12BIT 48TQFP
XRD98L63AIV-F IC CCD DIGITIZER 12BIT 48TQFP
XRT71D00IQ-F IC JITTER ATTENUATOR SGL 32TQFP
XRT71D03IV-F IC JITTER ATTENUATOR 3CH 64TQFP
XRT71D04IV IC JITTER ATTENUATOR 4CH 80TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRD98L61EVAL 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 Eval Board for XRD98L61AIV 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
XRD98L61ZEVAL 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 Eval Board (Solder) XRD98L61AIV 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
XRD98L62 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 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*