ACPL-772L-520E

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Optoisolators, known as optical couplers or optocouplers, are used to electrically isolate two state-of-the-art circuits. When two circuits are isolated, they are completely separated electrically and there is no current flowing between them. This isolation prevents noise or fluctuations from passing through from one circuit to another. Optoisolators use an LED and a phototransistor to provide this isolation. The ACPL-772L-520E is a high speed, low power consumption logic output optoisolator, and it is a good choice for applications where high reliability and/or low power consumption are critical. In this article, we will discuss the application field and working principle of the ACPL-772L-520E.

ACPL-772L-520E Application Field

The ACPL-772L-520E is specifically designed for communications systems, solid-state storage devices, and frequency/phase lock loops. It can be used to provide electrical isolation between the high voltage and low voltage regions in power distribution, and it can also be used to provide electrical isolation between input/output (I/O) interfaces for computers and controllers. Other applications include signal transmission, data processing, control circuits, and power switching.

The ACPL-772L-520E is designed to provide a low-power, high-speed optoisolation solution. It has a very low power consumption (as low as 0.75mW) and can switch up to 1.2Mb/s. It has an integrated 300mW LED driver, which allows it to drive multiple LED devices. It also has a low saturation voltage of 1V, which makes it suitable for applications with low-voltage supply and low-voltage signal lines. Its high-speed switching capabilities make it a great choice for communication systems, high-frequency circuits, and digital signal processing.

ACPL-772L-520E Working Principle

The ACPL-772L-520E is an optoisolator, which means it uses an LED and a phototransistor to provide electrical isolation between two circuits. The LED is placed in one circuit, and the phototransistor is placed in the other. When the LED is energized, it emits light, which is then detected by the phototransistor. This triggers the phototransistor to switch, which in turn switches the second circuit. This process provides complete electrical isolation between the two circuits.

The ACPL-772L-520E has an increased isolation voltage of 600Vrms, which is twice the maximum allowable isolation of standard optoisolators. This higher isolation voltage rating increases its reliability and allows it to withstand higher voltages. Additionally, the ACPL-772L-520E has a very low power consumption, making it ideal for applications with low voltage supply and low voltage signal lines. The ACPL-772L-520E also has a very short propagation delay of only 12ns, making it suitable for high-speed signal transmission applications.

Conclusion

The ACPL-772L-520E is a high performance, low power consuming logic output optoisolator. Its high-speed switching capabilities and increased isolation voltage make it suitable for a wide range of applications, including communications systems, solid-state storage devices, frequency/phase lock loops, signal transmission, data processing, control circuits, and power switching. It is an excellent choice for applications where high reliability and/or low power consumption are critical.

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