UV Sensor Module

Circuit Design Guide
A low bias current op amp is needed to achieve highest sensitivity. Bias current causes voltage offset errors with largefeedback
resistors. Wide bandwidth circuits with smaller feedback resistors are less subject to bias current errors, but
even in these circuits, bias current must be considered if wide temperature range operation is expected.
Shield the photodetector circuit in a metal housing. It is a very high impedance, high sensitivity circuit and it requires good
shielding and effective power supply bypassing. This is not optional.
For highest sensitivity use the photodiode in a photovoltaic mode. With zero-bias operation, dark current offset errors are
not generated by this (photodiode leakage) current. Zero bias is a slower but higher sensitivity mode of operation. Most
photodiodes work quite effectively with zero bias, even those originally designed for reverse-biased operation.

* Fully tested and calibrated

* Customized design

* Easy user interface

* UV sensors with several components on the PCB

Feature

UV sensors of Sentrion make the photocurrent under UV light but the level of photocurent is very low. This small signal is not easy to be checked by normal current measure equipments and it is not to fit input signal of analog-to-digital converter(ADC). UV sensor module is amplifying the photocurrent to voltage signal and you can choose the output voltage range of UV sensor module by gain control.

UV Sensor Module