HCPL-2611#500

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Optoisolators - Logic Output

Introduction to HCPL-2611#500:

The HCPL-2611#500 is a popular optoisolator manufactured by Avago Technologies. It is designed with an integrated infrared LED and high CMR phototransistor which provide reliable isolation in commercial and industrial applications. The HCPL-2611#500 comes in a small SOP package which offers a low profile solution for a wide variety of applications.

Application fields of HCPL-2611#500:

The primary application area of HCPL-2611#500 is in communication isolation circuits. It is very effective in breaking negative feedback loops or in preventing large voltage spikes from propagating along data lines. The HCPL-2611#500 is operated with a 5V DC supply and can provide up to 5mA of output current. This makes it especially suitable for use in multimedia equipment, video and audio transfer, and communication systems.

It is also used extensively in automotive electronics, where it is employed for protection against electrostatic discharge (ESD) and the effects of engine noise. The HCPL-2611#500 can be employed for level shifting between SPI, I2C, and other integrated control systems. It is also suitable for digital signal level shifting, LED driving, and other digital logic applications.

Working principle of HCPL-2611#500:

The HCPL-2611#500 optoisolator works on the principle of secondary photoemission. This means that the phototransistor is activated by the incident light, and when it is turned off, the current flowing through the phototransistor is reduced. This effectively isolates the input and output circuits, preventing any voltage spikes or negative feedback loops.

The HCPL-2611#500 is designed with an integrated infrared LED which produces a wavelength of 880nm. The LED is activated by the 5V DC supply, and the resulting light is detected by the phototransistor. When the current decreases, the phototransistor is turned off, and the output is disabled. The output of the optoisolator can be further conditioned to provide a logic level output (as required by the application).

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