TSL238T / TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

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Part No.	TSL238T
Manufacturer	TAOS
Size	190 Kbytes
Pages	12 pages
Description	HIGH-SENSITIVITY LIGHT-TO-FREQUENCY CONVERTER

Datasheet Summary with AI

️· Package Type: 4-Lead Surface Mount (T)
️· Dimensions: See datasheet for detailed mechanical drawings

## Application Information
️· Output Interface: Designed to drive CMOS logic inputs.
️· Power Supply: Requires decoupling capacitors (0.01-0.1µF) close to the device.
️· Moisture Sensitivity Level (MSL): 3. Storage requirements apply to prevent degradation.
️· Reflow Soldering: Refer to the datasheet for specific reflow profile requirements.

## Absolute Maximum Ratings
️· Supply Voltage: 6V
️· Operating Temperature: -40°C to 85°C
️· Storage Temperature: -40°C to 85°C

# TSL238T High-Sensitivity Light-to-Frequency Converter

## Overview
This document details the TSL238T, a light-to-frequency converter combining a silicon photodiode and a current-to-frequency converter on a single CMOS integrated circuit. Output is a square wave with frequency proportional to light intensity, suitable for interfacing with microcontrollers.

## Features
️· High-resolution conversion of light intensity to frequency
️· High irradiance responsivity: 3.4 kHz/(µW/cm²) at 640nm
️· Low dark frequency: < 6 Hz at 50°C
️· Single-supply operation: 2.7V to 5.5V
️· Stable temperature coefficient: 200ppm/°C
️· Lead (Pb) free and RoHS compliant

## Electrical Characteristics
️· Supply Voltage (VDD): 2.7V to 5.5V
️· Output Frequency (fO): 40-60kHz (at 5V, 14.7 µW/cm²)
️· Dark Frequency (fD): < 0.3Hz
️· Irradiance Responsivity (Re): 3.4 kHz/(µW/cm²)

## Mechanical Specifications
️· Package Type: 4-Lead Surface Mount (T)
️· Dimensions: See datasheet for detailed mechanical drawings

## Application Information
️· Output Interface: Designed to drive CMOS logic inputs.
️· Power Supply: Requires decoupling capacitors (0.01-0.1µF) close to the device.
️· Moisture Sensitivity Level (MSL): 3. Storage requirements apply to prevent degradation.
️· Reflow Soldering: Refer to the datasheet for specific reflow profile requirements.

## Absolute Maximum Ratings
️· Supply Voltage: 6V
️· Operating Temperature: -40°C to 85°C
️· Storage Temperature: -40°C to 85°C