TSOP2138
Compact 38kHz infrared receivers for remote control applications
Manufacturer： vishay
series introduction
# TSOP2138 Product Series Introduction
## 1. Overview
The TSOP2138 product series is a highly advanced and reliable line of infrared receivers designed to meet the diverse needs of modern electronic devices. These receivers are engineered to provide efficient and accurate reception of infrared signals, making them an ideal choice for a wide range of applications, from consumer electronics to industrial control systems.
## 2. Key Features
### 2.1 High Sensitivity
The TSOP2138 series offers exceptional sensitivity to infrared signals. This high - sensitivity characteristic allows it to detect even weak infrared signals from a relatively long distance. For example, in a home entertainment system, it can easily receive signals from a remote control across a large living room, ensuring seamless operation without the need for the user to be in close proximity to the device.
### 2.2 Wide Operating Range
These receivers have a wide operating voltage range, typically from 2.7V to 5.5V. This flexibility makes them compatible with a variety of power sources and electronic circuits. Whether it is a battery - powered portable device or a mains - powered home appliance, the TSOP2138 can operate effectively within the specified voltage limits.
### 2.3 Excellent Immunity to Ambient Light
One of the significant advantages of the TSOP2138 series is its excellent immunity to ambient light. It is designed with advanced filtering technology that can reject unwanted infrared radiation from sources such as sunlight, fluorescent lights, and incandescent bulbs. This ensures reliable operation in various lighting conditions, reducing the chances of false triggering and improving the overall performance of the system.
### 2.4 High - Speed Data Transmission
The receivers are capable of high - speed data transmission, which is crucial for applications that require quick response times. They can accurately decode infrared signals with high - frequency modulation, enabling fast and efficient communication between the remote control and the receiving device. This is particularly important in applications like gaming consoles and high - end audio systems, where real - time interaction is essential.
### 2.5 Compact Design
The TSOP2138 series comes in a compact and lightweight package. This small form factor makes it easy to integrate into different types of electronic devices, especially those with limited space. Whether it is a sleek smartphone, a compact set - top box, or a miniaturized industrial sensor, the TSOP2138 can be easily incorporated without adding significant bulk to the design.
## 3. Technical Specifications
### 3.1 Signal Frequency
The TSOP2138 is designed to operate at a specific carrier frequency, usually 38kHz. This frequency is widely used in infrared remote control systems, ensuring compatibility with a large number of existing remote controls in the market.
### 3.2 Output Signal
The output of the TSOP2138 is an active - low signal. When an infrared signal is detected, the output pin goes low, and it returns to a high state when the signal is no longer present. This simple digital output makes it easy to interface with microcontrollers and other digital circuits.
### 3.3 Supply Current
The supply current of the TSOP2138 is relatively low, typically in the range of a few milliamperes. This low power consumption is beneficial for battery - powered devices, as it helps to extend the battery life and reduce the overall energy consumption of the system.
### 3.4 Detection Angle
The receivers have a wide detection angle, usually around 120 degrees. This wide angle allows them to receive infrared signals from different directions, providing greater flexibility in the placement of the remote control and the receiving device.
## 4. Applications
### 4.1 Consumer Electronics
- **Televisions**: The TSOP2138 is commonly used in
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