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| 型號(hào)： | XRD9815 |
| 廠商： | Exar Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁(yè)數(shù)： | 2/6頁(yè) |
| 文件大?。?/td> | 45K |
| 代理商： | XRD9815 |
XRDAN308
2
Rev. 2.00
XRD9815 3CH CCD, AVDD = DVDD = 5V, Fs = 12MSPS, PIXEL RATE = 4MSPS, 3Vpp, VCOM CAP = 0.03uF, ALL INPUTS BYPASSED TO
AGND WITH 0.01uF CAP
-250
-200
-150
-100
-50
0
50
100
150
00H
1FH
3FH
5FH
7FH
9FH
BFH
DFH
FFH
GAIN CODE
O
Red Offset
Green Offset
Blue Offset
Figure 2. System Offset of Red, Blue and Green Channels vs. Gain with 0.03
μ
F
Capacitor Connected to VCOM pin and 0.01
μ
F Capacitors Connected to Input Pins
Figure 2, shows that system offset of blue channel is fluctuating the most while offsets of red
and green channels only changing moderately. The table below summaries the data took from
the bench.
With 0.03uF Cap
Gain Code
00H (Low Gain)
7FH (Mid. Gain)
FFH (High Gain)
Red Channel
Offset (mV)
-9.38
-49.22
-91.41
Green Channel
Offset (mV)
1.72
53.91
93.75
Blue Channel
Offset (mV)
-18.75
-117.19
-206.25
Table 1. System Offset of Red, Blue and Green Channels vs. Gain
Even at the highest gain (gain code = FFH), the worst system offset (-206mV) is still smaller
than the offset DAC voltage range which is 300mV in both positive and negative directions.
Therefore, the system offset can still be corrected by the offset DAC. Please see the following
graphs for comparison of system offset and offset DAC range.
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| XRD9816BCV-F | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| XRD9816EVAL | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 Eval Board for XRD9816BCV 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 |
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