413101 Datasheet | Seme LAB

.. 413101 Visible Light Detector with Analog and Digital Outputs DESCRIPTION The 413101 is a low cost 4-pin 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”. It also has a digital output to provide on/off switching, with hysteresis to prevent flicker. 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 (e.g. 10K and 5V gives a range of 0 to over 250 Lux, but can be up to 1000 lux with a 1K resistor). The internal dark current cancellation enables high accuracy over the full temperature range, even at low light levels. Features - - - - - - - - - - Near human eye photopic response High IR rejection - integrated optical filter Current output highly linear vs light level 1u A per lux current output External resistor sets linear lux range Temperature stable Integrated high gain photo-current amplifier Dark-current cancellation Digital output for on/off switching Hysteresis to prevent flicker close to switching threshold APPLICATIONS - - - - Dawn/dusk sensing Security lighting Night-lights LCD backlight control 1.0 Basic application & test circuit Figure A Supply The 413101 is supplied as probed wafers.Failing die are marked with black ink-dots. VDD 413101 ADJ VADJ RSS DIG_OUT VSS On/Off Signal Pin Description VDD - Positive supply ADJ - Adjust (analog output) VSS - Ground DIG_OUT - Digital output (on/off signal) Preliminary Datasheet Revision A Page 1 of 12 This document is the property of Semefab (Scotland) Ltd and is furnished in confidence and upon the condition that it is neither copied nor released to a third party without prior consent. 413101 Visible Light Detector with Analog and Digital Outputs 2.0 FUNCTIONAL DESCRIPTION Refer to the block diagram Figure B. Light falling...