EL3H4(EB)-VG

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Optoisolators are electronic components that enable electrical signals to be passed between two isolated electrical systems while maintaining complete galvanic isolation between the two. The EL3H4(EB)-VG Optoisolator is a highly reliable transistor-coupled photovoltaic output device that relies on an LED and an optically coupled transistor to provide electrical isolation.

The EL3H4(EB)-VG Optoisolator is monolithically integrated with a high performance LED and a photovoltaic output transistor and features an optional voltage amplifier. Its high performance isolation of up to 2.2kV can withstand high voltage transients. The device is ideal for a variety of applications, including inverters, motor controllers, industrial machines, temperature controllers, frequency converters, and many others.

Application Field

The EL3H4(EB)-VG Optoisolator is suitable for a variety of applications as it provides excellent electrical isolation and high noise immunity. It can be used in a variety of electrical circuits, including microcontroller I/O points, power supplies, industrial process control equipment, and motor control systems. The optoisolator is also suitable for use in automotive control modules and communication systems. In addition, the EL3H4(EB)-VG Optoisolator can be used to isolate signal grounds from the main system power and to perform signal conditioning at the signal transmission interface.

Working Principle

The EL3H4(EB)-VG Optoisolator works by converting digital electrical signals into optical signals and vice versa. The device consists of an LED and a photovoltaic output transistor arranged in an inverse parallel configuration. The LED emits light when an electrical signal is applied to it, and this light is detected by the photovoltaic output transistor. The photovoltaic output transistor then amplifies the signal and sends it to the output. The EL3H4(EB)-VG Optoisolator also provides an isolation voltage of 2.2kV to ensure noise immunity at high voltage transients.

The EL3H4(EB)-VG Optoisolator is designed to provide galvanic isolation that prevents interference between the input and output, preventing the introduction of noise and signal leakage. The device has low input current requirements and high input-output isolation making it ideal for use in a variety of systems and applications.

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