visible light sensor

A low cost visible light sensor, with a current output which is directly proportional to the light level. It has a built in optical filter to provide a response which is close to the human eye, or photopic.  The output current can be converted to a voltage by connecting it in series with a resistor. The dynamic range is determined by the external resistor and power supply (10K and 5V gives a range of 0 to 200 Lux, but can be over 700 Lux with a 1K resistor). The internal dark current cancellation enables high accuracy over the full temperature range, even at low light levels.

Features:
·         Integrated high gain photo-current amplifier

·         Dark-current cancellation

Size:     3.2*1.6*1.1mm

Electrical specification:

1. Infra red response: 900nm, 1% of peak

2. Light current @ 200lux:150-350uA

                       @100lux: 75-175uA

                        @10lux: 7.5-17.5uA

3. Dark current @ 0 lux, Ta=25degree C: <1 nA

                       @0 lus, Ta=85degree C: 150 nA

4. Useable light range (Rss &Vdd dependant): 600-1000lux

Applications:

·         Dawn/dusk sensing

·         Security lighting

·         Display backlighting in laptops, mobile phones, LCD TVs

·         Night-lights