TSL235 - TAOS

TSL235 LIGHTTOFREQUENCY CONVERTER

GND VDD OUT The TSL235 light-to-frequency converter combines 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 compatible, the output allows direct interface to a microcontroller .

Features

5 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 . . . . . ..