ACPL-217-50CE

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ACPL-217-50CE is an optoisolator with a transistor photovoltaic output. It is a part of a wider range of optoisolators manufactured by Avago Technologies which are used to provide electrical isolation between two circuits. The component has a wide range of applications including providing intrinsic safety or noise isolation, controlling power circuits, enabling remote control, and switching inductive and capacitive loads. It can also be used to provide galvanic isolation in systems which require increased immunity to transients or high-frequency noise, or where there is a need to ensure reliable operation in electrically noisy environments.

The ACPL-217-50CE consists of a transmitter and a receiver. The transmitter consists of an AlGaAs infrared LED, while the receiver contains a phototransistor. The LED and transistor are optically coupled inside an IC package. The optical coupling ensures that there is no internal electrical connection between the transmitter and the receiver, thereby providing galvanic isolation. It also ensures that signals from the two sides are kept completely independent, ensuring reliable operation in electrically noisy environments.

The working principle of the ACPL-217-50CE is quite simple. In the transmitter side, the voltage applied to pins 1 and 2 of the IC causes the LED to emit infrared light which is picked up by the phototransistor in the receiver side. The current that flows through the phototransistor is inversely proportional to the amount of light, thereby creating a voltage that is applied to pins 3 and 4. This voltage is used to control the external circuitry. The circuit is designed to operate with a supply voltage range between 5 and 18V and has a tolerant operating temperature range of -40C to 105C.

The ACPL-217-50CE is widely used in automotive, industrial, and consumer electronics applications. It is typically used to provide electrical isolation between control signals, protect high-frequency circuits from noise, switch inductive and capacitive loads, provide intrinsic safety, and enable remote control. It is also used in automotive systems to enable communication between onboard systems, such as the engine control unit, transmission control unit, and climate control unit. In industrial applications, it is commonly used in power supply and motor control circuits. It is also used in consumer electronics, such as air conditioners, refrigerators, TVs, and DVD players, to enable remote control.

Overall, the ACPL-217-50CE is an optoisolator with a transistor photovoltaic output that provides electrical isolation between two circuits. Its wide operating voltage range makes it suitable for a variety of applications. Additionally, its tolerance to temperature fluctuations and its ability to provide galvanic isolation make it ideal for use in automated systems, where reliable and long-term operation is required.

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