Illuminance sensor

What is a photo IC diode?

A photo IC diode contains a current amplifier that amplifies photocurrent generated from the internal photodiodes and outputs the amplified current. Photo IC diodes are two-terminal current devices and so can be treated as photodiodes having a large photosensitive area.

What types of photo IC diodes are available?

The S7183 and S7184 are standard type photo IC diodes that amplify photocurrent from photodiodes by an internal current amplifier. The S9066-211B, S9067-201CT, S13948-01SB, S11153-01MT and S11154-201CT have two photosensitive areas on a single chip and provide spectral response characteristics close to human eye sensitivity by processing the signals in the internal current amplifier circuit without using a visual-sensitive compensation filter. The S13948-01SB uses a plastic package having the same shape as a metal package that resembles our "5R" type CdS photoconductive cells and so allows the S13948-01SB to easily replace those CdS cells. The S11153-01MT has a wide operating temperature range (-40 ℃ to +100 ℃), and the S11154-201CT offers spectral response characteristics similar to spectral luminous efficiency.


What features do photo IC diodes have compared to other similar products?

Photo IC diodes are current output devices just like photodiodes but produce 1000 times or more higher photocurrent than photodiodes having the same photosensitive area. Unlike CdS photoconductive cells, photo IC diodes have a gamma of approximately 1 and the effect of the preceding signal does not remain.

How should I use photo IC diodes?

Photo IC diodes can be used in the same way as reverse-biased photodiodes. In most cases, just connecting a load resistor will provide a satisfactory output voltage.