ACPL-827-060E

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Optoisolators - Transistor, Photovoltaic Output, commonly called opto-couplers, provide electrical isolation when two circuits may not be connected directly for a variety of reasons ranging from safety to maintaining signal integrity. The ACPL-827-060E optoisolator is an example of a photovoltaic optoisolator with a transistor output. It provides a high creepage distance, which is important for high voltage or high power applications, yet maintains a fairly compact form factor.

The ACPL-827-060E optoisolator consists of an IRED light-emitting diode (LED) mounted in a plastic housing coupled with a monolithic detector IC chip. Light from the LED is received on the detector IC chip, which then switches the appropriate output transistor. For ACPL-827-060E, the output transistor is an NPN type. The IC chip features an internal voltage regulator, reverse polarity protection, and an output zero-cross detector, all of which contribute to the overall integration capabilities of the optoisolator.

The output transistor in the ACPL-827-060E optoisolator provides a high degree of electrical isolation of up to 2000 Volts – a much higher voltage range than standard opto-couplers, which is a clear advantage for applications that require it such as power isolation. It also provides superior electromagnetic interference and radio frequency interference (EMI/RFI) immunity, making it well suited for applications that require fast switching speeds and a high degree of noise immunity.

When the ACPL-827-060E optoisolator is used, the LED is connected to the input of the optoisolator and the output transistor is connected to the output. When the input voltage exceeds the LED’s threshold voltage, electrons will be excited within the LED. These electrons will be emitted as photons, which strike the input of the detector IC chip. The detector IC then switches the output transistor based on the photon intensity, providing the required voltage at the output. The output transistor is shorted to ground when the input voltage is less than the LED threshold voltage.

The ACPL-827-060E optoisolator is ideal for a range of applications, from high voltage isolation to providing robust noise immunity. Its high creepage distance also ensures safe operation for high voltage and high power applications. The internal voltage regulator, reverse polarity protection, and zero-cross switch guarantee its reliable operation, ensuring protection and integrity in large, demanding industrial systems.

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