ET6505B

LIGHT-ACTIVATED INVERTER IC WITH OPEN-COLLECTOR AND ADJUSTABLE OPTICAL THRESHOLD ET6505B FEATURES Single supply range 4.5V to 18V NPN open-collector output Optical Sensitivity Adjustable over 7:1 range Operate point only 0.23mW/cm2 (480nW) typical Sensitivity tracks the temperature coefficient of power output of the GaAlAs LEDs Spectral response optimized for 880nm LED BLOCK DIAGRAM APPLICATIONS Industrial Controls Light to voltage conversion ADJ Resistor Open 10K 4.7K 2.2K 1K Short Normalized Threshold 1.00 1.95 2.73 3.80 4.98 7.23 Table showing threshold adjustments. DESCRIPTION This device incorporates an integral photodiode, amplifier, Schmitt trigger, and open-collector output stage. An onchip voltage regulator allows operation over a wide range of available supply voltage. The phase of the digital output is considered to be inverted from the optical input, so that the output is HI when the light source is OFF, and the output is LOW when the...