TSOP2138 Infrared Receiver Module

Product Overview

The TSOP2138 is an infrared receiver module designed for remote control systems. It falls under the category of electronic components and is widely used in consumer electronics, industrial automation, and automotive applications. The module is characterized by its high sensitivity, low power consumption, and compact package. It is typically available in a through-hole package and is essential for receiving and decoding infrared signals from remote controls.

Package and Quantity

The TSOP2138 is commonly packaged in a 3-pin through-hole package and is often supplied in reels or tubes for automated assembly processes.

Specifications

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

Detailed Pin Configuration

The TSOP2138 features three pins: 1. OUT (Output) 2. GND (Ground) 3. VS (Supply Voltage)

Functional Features

The module is designed to receive modulated infrared signals at a frequency of 38kHz. Upon detection of a valid signal, the output pin goes low, indicating the reception of a signal. The TSOP2138 also incorporates automatic gain control to suppress disturbances and improve noise immunity.

Advantages and Disadvantages

Advantages

• High sensitivity
• Wide supply voltage range
• Compact design
• Low power consumption

Disadvantages

• Limited carrier frequency compatibility
• Susceptible to ambient light interference

Working Principles

The TSOP2138 operates based on the principle of photoelectric detection. When exposed to modulated infrared light at 38kHz, the internal photodetector generates a corresponding electrical signal, which is then processed to produce the output signal.

Detailed Application Field Plans

The TSOP2138 finds extensive use in various applications, including: - Remote control systems for TVs, audio equipment, and air conditioners - Industrial automation for remote operation of machinery - Automotive infrared-based control systems for car entertainment and climate control

Detailed and Complete Alternative Models

Several alternative models to the TSOP2138 include: - TSOP31238: Similar specifications with extended transmission range - TSOP4838: Compatible with a wider range of carrier frequencies - TSOP2238: Lower power consumption with comparable sensitivity

In conclusion, the TSOP2138 infrared receiver module is a versatile component that plays a crucial role in remote control systems across different industries. Its high sensitivity, compact design, and wide supply voltage range make it a popular choice for designers seeking reliable infrared reception capabilities.

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