Analog UV Light Sensor Breakout - GUVA-S12SD - (AD76201)

Description:

Expand your light-sensing spectrum with this analog UV light sensor. It uses a UV photodiode, which can detect the 240-370nm range of light (covering UVB and most of the UVA spectrum). The signal level from the photodiode is very small, in the nano-ampere level, so we added an op-amp to amplify the signal to a more manageable voltage level.

This sensor is much simpler than our Si1145 breakout; it only does one thing and provides an analog voltage output instead of requiring a complicated I2C configuration procedure. This makes it better for simple projects. It also features a "true" UV sensor rather than a calibrated light sensor. To use, power the sensor and op-amp by connecting V+ to 2.7 - 5.5 VDC and GND to ground. Then, read the analog signal from the OUT pin. The output voltage is: Vo = 4.3 * Diode-Current-in-uA. So, if the photocurrent is 1uA (9 mW/cm^2), the output voltage is 4.3V. You can also convert the voltage to UV index by dividing the output voltage by 0.1V. So, if the output voltage is 0.5V, the UV index is approximately 5.

Please note that our UV LEDs are 400nm, which is outside the range of this sensor, so if you are trying to test this sensor, don't use them! A UV tanning lamp or "lizard lamp" will work much better.

You can use the following links as a reference:

- Datasheet

- Fritzing object in Adafruit Fritzing library

- PCB EagleCAD files in GitHub

Reference link