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CMV2000 bảng dữ liệu(PDF) 13 Page - ams AG

tên linh kiện CMV2000
Giải thích chi tiết về linh kiện  2.2 Megapixel machine vision CMOS image sensor
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CMV2000 bảng dữ liệu(HTML) 13 Page - ams AG

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Reference: CMV2000-datasheet-v3.8
CMV2000 v3 Datasheet
Page 12 of 63
© 2015 CMOSIS bvba
The typical (offset) value of the temperature sensor at 0°C would be: 1000 ∗
���� [������������]
40
DN. This offset can differ per device.
A typical slope would be around 0.3 ∗
40
����[������������]
°C/DN.
For example, for the calibration of a sensor you’re reading out a temperature register value of 1066 at 35°C die
temperature and an input frequency of 40MHz. If later you read out the temperature register value and it is 1184. You
can calculate the ambient temperature back from that.
Ambient temperature = [(1184-1066)*0.3*40/40Mhz] + 35°C = 70.4°C die temperature.
Or vice versa, if you want to know the temperature register value for a die temperature of -10°C at 40MHz:
Register value = (-10°C -35°C) * 40MHz/40 * (1/0.3) +1066 = 916 DN
If you want a more accurate calibration you can calibrate the sensor at multiple temperatures, so you will have the exact
value of the slope also. For most devices this should be around 0.29 ~0.31.
FIGURE 3: TYPICAL OUTPUT OF THE TEMPERATURE SENSOR OF THE CMV2000
Optical center
Pixel (0,0)
3.19mm
6.58mm
Temp. sensor
FIGURE 4: LOCATION OF THE TEMPERATURE SENSOR
0
200
400
600
800
1000
1200
1400
-40
-20
0
20
40
60
80
Temperature (C)
Temperature sensor



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