Description
The OSC237 light to frequency converter combines silicon
Photodiode and a current to frequency ASIC on a FR4 PCB.
Output is a square wave (50% duty cycle) with frequency to light intensity on the photodiode.

Features
* Photodiode size: 1.095×1.095mm
* Irradiance responsivity: 3.6KHz（ uW/c ㎡) @660nm
* Single supply range: 2.5~5.5V
* Low Power: 1.25mA at 3.3V power supply