OP760D

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Optoisolators, also known as optical couplers, are devices that use light signals to transmit electrical signals between two isolated circuits while providing a high degree of electrical insulation. They are widely used in industrial automation and power control applications, both for noise immunity and isolation of electrical signals from vibrations and shock. The OP760D opto-isolator is an application-specific opto-isolator with a transistor photovoltaic output. It features high common mode transient immunity, a wide temperature operation range, and a small size ideal for a variety of applications.

Overview of the OP760D

The OP760D is a single-channel, compact, transistor photovoltaic opto-isolator with a mini-DIP package that offers superior noise immunity and isolation up to 10kV/µs of CM transient immunity. It also has a wide temperature operation range of -40°C to +105°C. The device is designed for applications such as liquid level detection, electrical power control, power supply ON/OFF detection, current sensing, and general electrical noise isolation.

Working Principle of the OP760D

The OP760D works on the principle of using a light-emitting diode (LED) to transmit an electrical signal across an isolated gap and then utilize the resulting detected signal. In the basic configuration, the OP760D features an LED mounted inside a light-transmissive package that radiates light in response to an applied voltage. When the LED is illuminated, a photodiode located on the other side of the OP760D\'s package receives a light signal. This is converted into an electrical signal that can be used to control a transistor connected to the OP760D\'s output.

The transistor output of the OP760D works on the principle of a photovoltaic effect, in which light energy is converted into an electrical signal. When the LED inside the optoisolator illuminates, the photodiode within detects the light energy and generates a small voltage. This voltage is then amplified and used to drive the transistor output at the OP760D\'s output terminal.

Applications of the OP760D

The OP760D is used in a wide range of industrial automation and power control applications. Its features, including high common mode transient immunity, wide temperature operation, and small size, make it ideal for applications such as:

• Liquid level detection
• Power supply ON/OFF detection
• Current sensing
• General electrical noise isolation
• Switch gear and relay control
• Controller and PLC signals
• Motor control
• Temperature sensing

Conclusion

The OP760D opto-isolator is a single-channel, compact transistor photovoltaic output opto-isolator with a mini-DIP package. It offers superior noise immunity and isolation up to 10kV/µs of CM transient immunity, making it suitable for a wide range of industrial automation and power control applications. It also has a wide temperature operation range of -40°C to +105°C and is small in size, making it ideal for space-constrained projects.

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