TSL237T Datasheet - TAOS

TSL237T HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER

The TSL237T light-to-frequency converter combines a silicon photodiode and a current-to-frequency converter on a single monolithic CMOS integrated circuit. Output is a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance) on the photodiode. The digital out.

r r D High-Resolution Conversion of Light Intensity to Frequency With No External Components D High Irradiance Responsivity . . . 1.2 kHz/(mW/cm2) at λp = 640 nm D Low Dark Frequency . . . < 2 Hz at 505 C D Single-Supply Operation . . . 2.7 V to 5.5 V D Stable 200 ppm/°C Temperature Coefficient D Communicates Directly with a Microcontroller D RoHS Compliant TSL237T HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER TAOS055J DECEMBER 2007 PACKAGE T 4-LEAD SMD (TOP VIEW) OE 1 4 OUT GND 2.

TSL237T Features

* t light source. Maximum resolution and accuracy may be obtained using frequency-measurement, pulse-accumulation, or integration techniques. Frequency measurements provide the added benefit of averaging out random- or high-frequency variations (jitter) resulting from noise in the light signal. Resolu

TSL237T-TAOS.pdf