TSL235 Datasheet | TAOS

Description GND VDD OUT The TSL235 light-to-frequency converter bines a silicon photodiode and a current-to-frequency converter on a single monolithic CMOS integrated circuit. The output is a square wave (50% duty cycle) with frequency directly proportional to light intensity. Because it is TTL patible, the output allows direct interface to a microcontroller or other logic circuitry. The device has been temperature pensated for the ultravioletto-visible light range of 300 nm to 700 nm and responds over the light range of 300 nm to 1100 nm. The TSL235 is characterized for operation over the temperature range of - 25°C to 70°C. Functional Block Diagram Light Photodiode Current-to-Frequency Converter Output Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VDD (see Note 1) - - - - - - - - - - - . . . . 6.5 V Operating free-air temperature range, TA - - - - - - - - . . . . - 25°C to 70°C Storage temperature range, Tstg - - - - - - - - - - . . - 25°C to 85°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds - - - - - - . 240°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “remended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to GND. .taosinc. Texas Advantced Optoelectronic Solutions Inc. 800 Jupiter Road, Suite 205 S Plano, TX 75074 S (972) 673-0759 t Copyright © 2000, TAOS Inc. 1 TSL235...