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resources:eval:user-guides:arduino-uno:reference_designs:demo_cn0397 [23 Jan 2018 16:24] Mircea Caprioru [General Description/Overview] |
resources:eval:user-guides:arduino-uno:reference_designs:demo_cn0397 [03 Jan 2021 22:04] Robin Getz fix links |
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| ===== General Description/Overview ===== | ===== General Description/Overview ===== | ||
| - | The **CN0397_example** project uses the [[http://www.analog.com/en/design-center/reference-designs/hardware-reference-design/circuits-from-the-lab/cn0397|EVAL-CN0397-ARDZ shield]] which is a single-supply, low power, low noise, 16-bit light detector utilizing wavelength specific photodiodes. The photodiodes used in this circuit are sensitive at different wavelengths, to read light intensity levels over the visible light spectrum where the plants are photosynthetically active. | + | The **CN0397_example** project uses the [[adi>en/design-center/reference-designs/hardware-reference-design/circuits-from-the-lab/cn0397|EVAL-CN0397-ARDZ shield]] which is a single-supply, low power, low noise, 16-bit light detector utilizing wavelength specific photodiodes. The photodiodes used in this circuit are sensitive at different wavelengths, to read light intensity levels over the visible light spectrum where the plants are photosynthetically active. |
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| - | The **EVAL-CN0397-ARDZ** board uses [[http://www.analog.com/ad8500|AD8500]], a low power, precision CMOS op amp with a low input bias current of a typical 1pA which is used in a transipedance amplifier configuration to convert the current output of the photodiodes into voltage. It also features [[http://www.analog.com/ad7798|AD7798]] a 3-channel, low noise, low power 16-bit ADC that converts the analog voltage into digital data in for the processing of data into light intensity. The circuit utilizes RGB photodiodes from Everlight with their peak sensitivities 620nm (**R**), 550nm (**G**) and 470nm (**B**). | + | The **EVAL-CN0397-ARDZ** board uses [[adi>ad8500|AD8500]], a low power, precision CMOS op amp with a low input bias current of a typical 1pA which is used in a transipedance amplifier configuration to convert the current output of the photodiodes into voltage. It also features [[adi>ad7798|AD7798]] a 3-channel, low noise, low power 16-bit ADC that converts the analog voltage into digital data in for the processing of data into light intensity. The circuit utilizes RGB photodiodes from Everlight with their peak sensitivities 620nm (**R**), 550nm (**G**) and 470nm (**B**). |
| The **CN0397_example** application perform ADC readings for all 3 channels, processes them and make all necessary calculations in order to provide light intensity and light concentration for each color. | The **CN0397_example** application perform ADC readings for all 3 channels, processes them and make all necessary calculations in order to provide light intensity and light concentration for each color. | ||
resources/eval/user-guides/arduino-uno/reference_designs/demo_cn0397.txt · Last modified: 03 Jan 2021 22:04 by Robin Getz