TSOP1738 Datasheet,Working Principle,Specs:TSOP1738 Vs TSOP1838
Chip Ic Release time：2024-03-11 Page View：155
- Introduction
- TSOP1738 DESCRIPTION
- CAD-MODEL
- Block Diagram & Pinout
- TSOP1738 FEATURES
- TSOP1738 Working Principle
- TSOP1738 Alternatives
- Applications
- TSOP1738 Vs. TSOP1838
- How the TSOP1738 IR Receiver detects and demodulates infrared signals?
- Recommended brands or models of remote controls that are compatible with the TSOP1738 IR Receiver
- Conclusion
- Specifications
- Datasheets
- Product comparison
Introduction
The TSOP1738 is an infrared (IR) receiver module widely used in remote control applications. It is designed to detect and demodulate infrared signals, allowing devices to receive commands or data wirelessly. In this article, we will explore the TSOP1738's datasheet, working principle, specifications, and compare it with the TSOP1838, another commonly used IR receiver module.
TSOP1738 DESCRIPTION
What is TSOP1738 ir receiver？This IR receiver series is optimized for long burst remote control systems in different environments. The customer can chose between different IC settings (AGC variants), to find the optimum solution for his application. The higher the AGC, the better noise is suppressed, but the lower the code compatibility.
The devices contain a PIN diode and a preamplifier assembled on a lead frame. The epoxy package contains an IR filter. The demodulated output signal can be directly connected to a microprocessor for decoding. These components have not been qualified to automotive specifications.
CAD-MODEL
Symbol
Footprint
3D-Model
Block Diagram & Pinout
TSOP1738 FEATURES
• Individual IC settings to reach maximum performance
• Immunity against noise (lamps, LCD TV, Wi-Fi)
• Low supply current
• Photo detector and preamplifier in one package
• Supply voltage: 2.0 V to 5.5 V
• Material categorization: for definitions of compliance
Specifications:
The TSOP1738 comes with specific specifications that are crucial to understanding its performance capabilities. Some important specifications include:
1. Carrier Frequency: The TSOP1738 operates at a carrier frequency of typically 38 kHz. This frequency is commonly used in infrared remote control systems.
2. Supply Voltage: The module typically operates within a supply voltage range of 4.5V to 5.5V. It is important to adhere to this voltage range for reliable operation.
3. Output Type: The TSOP1738 provides a digital output signal, typically active low. The output goes low when a valid infrared signal is received, indicating the presence of a command or data.
TSOP1738 Working Principle
The TSOP1738 operates on the principle of receiving and demodulating modulated infrared signals. It consists of an infrared photodetector, a bandpass filter, and a demodulator.
1. Infrared Signal Reception: The photodetector in the TSOP1738 senses incoming infrared signals. When an IR signal is transmitted by a remote control, the photodetector converts it into a corresponding electrical signal.
2. Bandpass Filtering: The module includes a bandpass filter that allows only a specific range of infrared frequencies to pass through. This filter helps eliminate interference from ambient light sources and other sources of infrared radiation, enhancing the module's reliability.
3. Demodulation: The demodulator in the TSOP1738 separates the modulated signal from the carrier frequency and extracts the original command or data. It performs demodulation techniques such as pulse width modulation (PWM) or pulse position modulation (PPM) to recover the transmitted information.
TSOP1738 Working Principle
Here's a simplified explanation of how it works:
1. Infrared Signal Reception: The TSOP1738 has a built-in infrared photodetector that is sensitive to infrared light. When an infrared signal is transmitted by a remote control, such as pressing a button, it emits modulated infrared light pulses.
2. Photodetection: The photodetector in the TSOP1738 receives the incoming infrared signal. It works by converting the received infrared light into a corresponding electrical signal.
3. Bandpass Filtering: The TSOP1738 includes a bandpass filter that allows only a specific range of infrared frequencies to pass through. This filter helps to eliminate interference from ambient light sources and other sources of infrared radiation.
4. Demodulation: The filtered electrical signal is then demodulated by the TSOP1738. Infrared remote controls typically use pulse modulation techniques, such as pulse width modulation (PWM) or pulse position modulation (PPM). The demodulation process separates the modulated signal from the carrier frequency and extracts the original command or data.
5. Output Signal: Once the demodulation is complete, the TSOP1738 generates an output signal that represents the received command or data. This output signal can be further processed by the connected circuitry to interpret the received information and perform the desired action.
Overall, the TSOP1738 IR Receiver acts as a specialized sensor that detects and converts modulated infrared signals into electrical signals, allowing devices to receive and interpret commands or data transmitted by infrared remote controls.
TSOP1738 Alternatives
The TSOP1738 is an infrared (IR) receiver module commonly used for remote control applications. If you are looking for an alternative to the TSOP1738, there are a few options you can consider. Here are a few popular alternatives:
1. TSOP31238: The TSOP31238 is a similar IR receiver module manufactured by Vishay. It has similar specifications to the TSOP1738 and can be used as a drop-in replacement in most applications.
2. TSOP38238: Another alternative from Vishay is the TSOP38238. It is a versatile IR receiver module that operates at a carrier frequency of 38 kHz, making it compatible with many remote control systems.
3. TSOP4838: The TSOP4838 is another commonly used IR receiver module. It operates at a carrier frequency of 38 kHz and has similar pinout and functionality to the TSOP1738.
4. VS1838B: The VS1838B is an IR receiver module produced by VISHAY. It is compatible with a wide range of remote control systems and is often used as an alternative to the TSOP1738.
Applications
The TSOP1738 IR Receiver, being a popular and widely used component, finds applications in various fields. Some common applications of the TSOP1738 IR Receiver include:
1. Remote Control Systems: The TSOP1738 is commonly used in consumer electronics devices that utilize remote controls, such as televisions, DVD players, audio systems, set-top boxes, and air conditioners. It allows these devices to receive and interpret commands from remote controls.
2. Home Automation: The TSOP1738 is utilized in home automation systems to receive signals from infrared remote controls for controlling lighting, appliances, thermostats, and other smart home devices.
3. Robotics: In robotics, the TSOP1738 IR Receiver can be used to receive commands from remote controls to control the movement and actions of robots, such as robotic arms, rovers, and drones.
4. Security Systems: The TSOP1738 is employed in security systems that use infrared remote controls for arming or disarming alarms, controlling surveillance cameras, or accessing secure areas.
5. Industrial Control: The TSOP1738 is used in industrial control systems where remote control functionality is needed to operate machinery, equipment, or processes.
6. Automotive Applications: The TSOP1738 can be found in automotive applications, such as car entertainment systems, keyless entry systems, and infrared-based tire pressure monitoring systems.
7. Gaming Consoles: The TSOP1738 is utilized in gaming consoles and controllers that use infrared communication, enabling players to wirelessly interact with the gaming console.
TSOP1738 Vs. TSOP1838
TSOP1838
TSOP1838 CAD-Model
The TSOP1838 is another popular IR receiver module that is often compared to the TSOP1738. While both modules serve similar purposes, there are a few key differences:
1. Carrier Frequency: The TSOP1738 operates at a carrier frequency of 38 kHz, while the TSOP1838 operates at a carrier frequency of 38.3 kHz. This slight difference in frequency allows for distinguishing between the two modules in applications where multiple IR receivers are used.
2. Operating Voltage: The TSOP1738 operates within a supply voltage range of 4.5V to 5.5V. In contrast, the TSOP1838 has a wider operating voltage range of 2.5V to 5.5V. This broader operating voltage range offers greater flexibility in different power supply configurations.
How the TSOP1738 IR Receiver detects and demodulates infrared signals?
The TSOP1738 IR Receiver is designed to detect and demodulate infrared signals using a process called infrared remote control reception.
Recommended brands or models of remote controls that are compatible with the TSOP1738 IR Receiver
The TSOP1738 IR Receiver is a widely used component that is compatible with a broad range of remote controls. While there are many brands and models available in the market, here are a few popular and commonly used remote control brands that are compatible with the TSOP1738:
1. Logitech Harmony: Logitech Harmony remote controls are known for their compatibility with a wide range of devices. They offer programmable remotes that can be configured to work with various audiovisual equipment, including TVs, DVD players, gaming consoles, and more.
2. Philips Universal Remote: Philips manufactures universal remote controls that are designed to work with multiple devices from different brands. They offer models with programming capabilities to control a variety of home entertainment devices.
3. Sony Universal Remote: Sony produces universal remote controls that are compatible with numerous devices. They provide easy setup options and often come pre-programmed with codes for popular brands and models.
4. Samsung Universal Remote: Samsung offers universal remote controls that are designed to work with their own brand of devices as well as other compatible electronics. They provide a user-friendly interface and offer a wide range of compatibility.
5. RCA Universal Remote: RCA manufactures universal remote controls that can be programmed to work with various devices. They offer models with extensive code databases and easy setup features.
Conclusion
The TSOP1738 is a widely used IR receiver module known for its reliable performance in remote control applications. Understanding its datasheet, working principle, and specifications is crucial for successful integration into electronic circuits. Additionally, the comparison between the TSOP1738 and TSOP1838 helps in selecting the most suitable module for specific requirements.
Please note that the information provided in this article is based on general knowledge up until September 2021, and it is always recommended to refer to the latest datasheets and documentation for accurate and up-to-date information on the TSOP1738 and TSOP1838 modules.
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