TCS3x72 Lux and CCT Calculations using ams Color Sensors Application Note
Several ams digital color sensors provide red, green, blue and clear channel outputs with an integrated IR filter over the RGBC channels. Clear refers to an open channel with no color filter overthe sensor. One of the most common applications is to measure the Lux and color temperature (CT) of the ambient light. This document will show how to calculate Lux and color temperature for amscolor sensors with integrated IR filters. See the appendix to this app note for details on a specific part such as the TCS3x72.
In addition, there are many questions related to the implementation. What is the maximum lux level that can be measured? What is the accuracy of the lux calculations due to the digital nature of the measurements? Is the light source too bright resulting in saturation of the device? What happens when the device is placed behind dark glass? These are a few questions that are answered in this issue of the designer’s notebook.
For information regarding the TSL2x7x, please see DN29A Using the Lux Equation.
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TCS3x72 、 TSL2x7x 、 TCS3772 、 TCS3414 、 TCS3472 、 TMD3782 、 TCS3790 、 TMD3790 |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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26/08/13 |
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Rev 1.0 |
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DN40 |
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575 KB |
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