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TSL238 Datasheet - TAOS

TSL238-TAOS.pdf

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Datasheet Details

Part number:

TSL238

Manufacturer:

TAOS

File Size:

573.68 KB

Description:

High-sensitivity light-to-frequency converter.

TSL238, HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER

The TSL238 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 outp

r r D High-Resolution Conversion of Light Intensity to Frequency With No External Components D High Irradiance Responsivity .

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2.3 kHz/(mW/cm2) at λp = 524 nm D Low Dark Frequency .

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< 2 Hz at 255 C D Single-Supply Operation .

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2.7 V to 5.5 V D Stable 200 ppm/°C Temperature Coefficient D Interfaces Directly to a Microcontroller D Lead (Pb) Free Package D RoHS Compliant TSL238 HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER TAOS073J SEPTEMBER 2008 PACKAGE D 8-LEAD SOIC (TOP VIEW

TSL238 Features

* ivity for a given wavelength of light given in kHz/(μW/cm2) is the incident irradiance in μW/cm2 fD is a constant error term in the output frequency calculation resulting from leakage currents, and is independent of light intensity. The TSL238 die is trimmed to mini

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