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TSL237T Datasheet High-sensitivity Light-to-frequency Converter

Manufacturer: TAOS

Overview: r r D High-Resolution Conversion of Light Intensity to Frequency With No External ponents 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.

Datasheet Details

Part number TSL237T
Manufacturer TAOS
File Size 605.86 KB
Description HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER
Datasheet TSL237T-TAOS.pdf

General Description

The TSL237T light-to-frequency converter bines 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 output allows direct interface to a microcontroller or other logic circuitry.

Key Features

  • 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. Resolution is limited main.

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