Photodiode module

Photodiode module contains a photodiode, a transimpedance amplifier (a current-voltage converter, cvc) and an optional -5V bias generator for the photodiode.

Placing a bias voltage across the photodiode puts it into photoconductive mode where linearity (especially at higher photocurrents) is increased and diode saturates at much larger intensities. Using photoconductive mode also increases the dark current of the sensor.

When using photodiode in zero bias mode (photovoltaic mode), dark current is minimal and sensor can be used in very low light situations.

Transimpedance gain: 1V / 1µA

-3dB bandwidth: 36 kHz

Wavelength ranges for photodiode variants:

VIS-NIR: 400 nm .. 1100 nm

NIR: 800 nm .. 1100 nm

VIS: 450 nm .. 800 nm

Designed and assembled in Espoo, Finland