TSOP39438TR

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Optical sensors are a type of sensors used to detect and respond to the presence of light. Photo detectors are a class of optical detectors, which are used to convert light into electrical signals. The TSOP39438TR is a high-performance, remote control receiver, specifically designed for infrared remote control systems.

Designed for legacy infrared remote systems with active-low output logic, the TSOP39438TR is perfect for sensing infrared light generated by remote controls. It features a built-in lens and tuned circuit that makes it insensitive to external light sources, as well as superior noise immunity from capacitive and inductive sources. TSOP39438TR has a fast response time of 4 ms, suitable for high-frequency transmission, and high sensitivity, making it ideal for most applications.

The TSOP39438TR is commonly used in a variety of consumer and television equipment, remote control toy systems, and entertainment systems. It is also used as a trigger for alarms, cameras, and other security applications. The TSOP39438TR is often used in digital set-top boxes, remote control systems, digital signal transmissions, and other remote control applications.

The TSOP39438TR operates by detecting infrared light through its internal phototransistor. The phototransistor consists of a photodiode and a field-effect transistor (FET). The FET is used to amplify the small current produced by the photodiode when it is exposed to infrared light. This amplified current is then used to trigger a CMOS logic IC, which detects the signal and activates the output, allowing a response to be triggered.

The internal lens of the TSOP39438TR plays an important role in the detection of infrared light. The lens is designed to focus the infrared light to the phototransistor, making it more sensitive to the infrared light. Without the lens, the phototransistor would be less sensitive and would have a harder time detecting the light.

The TSOP39438TR also features a built-in gain device which amplifies the signal before it is sent to the detection circuitry. This allows the receiver to respond more quickly and accurately to the transmitted signals. The gain device is designed to reduce false triggers and ensure accuracy.

In addition, the TSOP39438TR features an overload protection circuit, which protects the device from damage due to excessive incoming infrared light. The overload protection circuit can be disabled if desired, allowing the receiver to respond to higher levels of incoming infrared light.

In summary, the TSOP39438TR is a high-performance remote receiver, specifically designed for infrared remote control systems. Using an internal phototransistor, lens, gain device, and overload protection circuit, the TSOP39438TR is able to detect incoming infrared light, amplify it, and activate the output. This allows the TSOP39438TR to be used in a variety of consumer, television, and security applications.

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