TSOP2438 Infrared Receiver Module

Introduction

The TSOP2438 is an infrared receiver module designed for remote control systems. This component belongs to the category of electronic sensors and is widely used in consumer electronics, industrial automation, and automotive applications. The TSOP2438 is known for its high sensitivity, compact package, and reliable performance.

Basic Information Overview

• Category: Electronic Sensor
• Use: Remote Control Systems
• Characteristics: High Sensitivity, Compact Package
• Package: 3-pin epoxy package
• Essence: Infrared Receiver Module
• Packaging/Quantity: Typically sold in reels or tubes

Specifications

• Operating Voltage: 2.5V to 5.5V
• Carrier Frequency: 38 kHz
• Supply Current: 350 µA
• Transmission Range: Up to 45 meters
• Output: Active Low
• Operating Temperature: -25°C to +85°C

Detailed Pin Configuration

1. OUT (Output)
2. GND (Ground)
3. VS (Supply Voltage)

Functional Features

• High Immunity against Ambient Light
• Improved Shielding against Electrical Field Disturbances
• Low Supply Current
• Photo Detector and Pre-amplifier in One Package
• Internal Filter for PCM Frequency
• TTL and CMOS Compatibility

Advantages

• Reliable Performance in Various Lighting Conditions
• Wide Operating Voltage Range
• Easy Integration into Existing Designs
• Low Power Consumption
• Compatible with Standard Logic Families

Disadvantages

• Limited Transmission Range in Some Environments
• Susceptible to Interference from Non-standard IR Signals

Working Principles

The TSOP2438 operates based on the principle of detecting modulated infrared signals. When exposed to infrared radiation at a frequency of 38 kHz, the internal photo detector converts the light signal into an electrical signal, which is then amplified and output as a digital signal.

Detailed Application Field Plans

1. Consumer Electronics: Used in TV remote controls, air conditioning units, and home entertainment systems.
2. Industrial Automation: Integrated into automated machinery for remote operation and control.
3. Automotive Applications: Utilized in car stereo systems and keyless entry systems.

Detailed and Complete Alternative Models

1. TSOP34138: Similar specifications with extended transmission range
2. TSOP4838: Higher sensitivity variant with wider operating voltage range
3. TSOP2238: Lower power consumption alternative with reduced transmission range

In conclusion, the TSOP2438 infrared receiver module offers a reliable solution for remote control systems, with its high sensitivity, compact package, and compatibility with various applications. Its working principles and detailed application field plans showcase its versatility and potential for integration into diverse electronic systems.

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