TSMP4138

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Optical Sensors - Photo Detectors - Remote Receiver

The TSMP4138 is an optical detector designed to remotely receive an optical signal from a transmitter in a system. It is designed to sense pulses of light of a given frequency and strength in order to initiate actions from the desired data signals. This component is typically used in remote control applications such as TV remote controls, home automation and vehicle security systems.

The TSMP4138 consists of photodiode, amplifier, output transistors, and control circuits. The photodiode converts the optical signal to an electrical signal, which is then amplified by the amplifier. The amplified electric signal is then fed to the output transistors which either turn on or off the output signal, depending on the type of receiver. For example, when the TSMP4138 is used as an RF remote receiver, the output transistors will turn on when the transmitted signal reaches the programmed frequency.

In order for the TSMP4138 to accurately receive and process the signal, the signal must be correctly filtered as it enters the photodiode. This is accomplished by the input filter that is included with the unit. This filter helps to remove any extraneous noise and stray frequency components that might interfere with the signal and weaken the signal quality. Additionally, the input filter helps to ward off any potential electrostatic discharge (ESD), which can easily damage the photodiode.

The output transistors of the components are designed to be very fast. If necessary, they can be used as logic devices in the system as well. For example, if the system requires a number of buttons to be controlled from the one remote control, then the output transistors from the TSMP4138 can be used to activate different components depending on the button pushed. The maximum output voltage of the circuitry is 21V, allowing the system to be operated at a wide range of voltages.

Overall, the TSMP4138 optical detector is a robust and cost effective solution for a variety of remote control remote receiver applications. As an optically-based device, it has advantages over simpler mechanical buttons, as no physical contact is required between the receiver and transmitter. Additionally, the high speed of the output transistors adds to the versatility of the component, as it can be used as both a logic device and a remote receiver. With the input filter to protect the photodiode from any ESD and its output capabilities, the TSMP4138 is an attractive choice for designers looking for an effective and reliable remote control system.

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