TRS1755

t TRS1722, TRS1755, TRS1766 HIGH SENSITIVITY REFLECTIVE COLOR SENSOR t WITH LIGHTĆTOĆVOLTAGE CONVERTERS TAOS034 – NOVEMBER 2002 D Converts Reflected Light Intensity to Output Voltage D Integral Color LEDs and Matching Color Filters on Sensors D Sensor is a Monolithic Silicon IC Containing a Photodiode, Operational Amplifier, Feedback Components, and Color Filter D High-Output LEDs and High-Sensitivity Sensors D Single Voltage Supply Operation D Surface-Mount Package ANODE 1 GND 2 PACKAGE (TOP VIEW) 4 OUT 3 VDD Description The TRS1722, TRS1755, and TRS1766 are high-sensitivity reflective color sensors in red (630 nm), green (567 nm), and blue (470 nm) — respectively — with light-to-voltage converters. Each device consists of a colored LED light source, a photodiode light sensor with matching optical color filter, a transimpedance amplifier, and on-board signal conditioning. Output voltage is directly proportional to the reflected light intensity on the photodiode plus any ambient light (which may be considered noise). Functional Block Diagram LED Anode External ÇÇÇÇÇÇÇÇReflecting Surface – + Voltage Output The LUMENOLOGYr Company t Texas Advanced Optoelectronic Solutions Inc. 800 Jupiter Road, Suite 205 S Plano, TX 75074 S (972t) 673-0759 www.taosinc.com Copyright E 2002, TAOS Inc. 1 TRS1722, TRS1755, TRS1766 HIGH SENSITIVITY REFLECTIVE COLOR SENSOR WITH LIGHTĆTOĆVOLTAGE CONVERTERS TAOS034 – NOVEMBER 2002 Terminal Functions TERMINAL NAME NO. GND 2 ANODE 1 ...