CNX48US

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Optoisolators, also known as optocouplers, are devices used to transfer electrical signals between two circuits without direct electrical contact. They are primarily used in digital electronics circuits to interface between parts of the circuit that operate at different voltage levels and provide some degree of protection for one part of the circuit from the other. The CNX48US is an optoisolator with a transistor, photovoltaic output.

The CNX48US is designed to provide an electrical barrier between two circuits while maintaining a low frequency signal transmission. It is a photocoupler with an integrated transistor output and provides a maximum operating voltage of 12V. The device has a collector-emitter breakdown voltage of 15V, a maximum collector current of 30mA, and a maximum collector-emitter saturation voltage of 0.1V. It can operate at temperatures ranging from -40°C to +100°C.

There are four primary components in the CNX48US; a LED, photoreceiver, isolation barrier, and a power transistor. The LED is a gallium arsenide infrared diode with a peak irradiation wavelength of 940nm. It typically requires an operating voltage of 2.2V with a maximum forward current of 30mA. The photoreceiver is a phototransistor which is designed to detect the light emitted by the LED and convert it into an electrical signal. It is designed to operate at a maximum collector current of 30mA.

The isolation barrier is composed of a thin dielectric material such as polyethylene which provides a high insulation resistance to prevent signal flow between the input and output circuits. Finally, the power transistor is able to amplify the signal from the phototransistor and drive the output circuit as needed. This allows for a large frequency response range (up to 20kHz typical) and power handling capabilities (up to 8mA).

The CNX48US optoisolator is an invaluable tool for engineers and designers who need to transfer signals between systems which operate at different voltage levels. Its compact size and high signal transmission capabilities make it a popular choice for a wide range of applications. It is commonly used in medical instruments, industrial controllers, automotive applications, and other industrial equipment.

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