ACPL-W21L-560E

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Optoisolators, also known as optical couplers, are widely used to provide electrical isolation between two circuits while allowing one circuit to control the other. These are most commonly used in industrial applications to protect components and enable efficient control. ACPL-W21L-560E is an optoisolator which falls under the Logic Output category. This article will discuss the application areas and working principle of ACPL-W21L-560E.

Application Areas

ACPL-W21L-560E is a logic output optoisolator, primarily used for signal isolation and noise immunity. It can be used in many different applications like Medical Equipment, Automotive, Industrial Automation, Building Automation, HVAC/R, and Security Systems. It is useful in applications where electrical isolation between two circuits is required without any additional circuitry. Its compact 6-pin SOT-23 package also allows it to be used in tightly packed, high-density equipment.

It can be used for the isolation of signals up to 25mA. This is suitable for the incorporation of microcontrollers and other logic circuits, such as PLCs, into an isolated system. On top of that, it offers a wide operating temperature range of -40°C to 105°C and an isolation voltage of 5300Vrms. It also has a switching speed of 500kHz and a response time of 50ns. These features make it suitable for use in applications with fast and dynamic response times.

Working Principle

ACPL-W21L-560E is an optoisolator constructed with a transmitter LED and receiver IC, separated by a transparent insulation medium. The output of the receiver is a logic level which is electrically isolated from the input. The LED transmits light signals to the silicon photodiode, which is connected to the receiver IC. When data is applied to the LED, the light intensity changes accordingly and is then detected by the photodiode. The receiver amplifies this signal and outputs the corresponding logic level signal.

In order to ensure a high degree of noise immunity, the LED and IC components are placed in an optically sealed package and embedded in a plastic or compound material. This high degree of insulation also makes ACPL-W21L-560E resistant to electromagnetic interference and radio frequency interference, thus avoiding any potential damage to the system. As this optoisolator is designed with a logic output, it can be used in a wide range of applications with different logic levels, such as TTL, CMOS, and open-collector.

Conclusion

ACPL-W21L-560E is a versatile optoisolator with many application fields and a wide operating range. From Medical Equipment to Automotive applications, it offers an ideal solution for providing electrical isolation between two circuits. Its construction, with a logic output, ensures that it can be used for a broad variety of logic levels. On top of that, it provides high noise immunity and a wide operating temperature range. Thus, ACPL-W21L-560E can be used for efficient and reliable signal transmission in many different industries.

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