EL2531

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Optoisolators are devices that electrically isolate a signal by modulating it optically. The EL2531 is a family of optoisolator chips belonging to the transistor, photovoltaic output class. Consequently, it operates by creating a photovoltage which is created when light energy from an internal LED source is used to excite two external diodes.

When an electrical signal is fed into the optoisolator, the internal LED is fired off which produces light of a specific wavelength. This light then travels through the two external diodes which are tuned to allow only the specific wavelength of the LED to pass through. When the diodes receive the light, they generate a large photocurrent which is then fed into the voltage control rail. This photocurrent produces an amplified output voltage that is proportional to the input signal.

The EL2531 has the advantage of providing true electrical isolation between the input and output ports. This allows for a much higher signal integrity. At the same time, due to the use of circuitry, the EL2531 also has an operating voltage range from 3.5V to 24V. This allows the optoisolator to cover a wide range of applications. It is suitable for use in low to mid-power electronics items such as air conditioners, TVs, washing machines and other similar products.

The EL2531 supports a range of modulation frequencies up to 30Mhz. This ensures that the optoisolator can handle high-speed signals efficiently. Moreover, it can respond to short pulses and output a higher voltage level than regular transistors. This makes the EL2531 ideal for use in many digital and logic circuits.

The EL2531 has an operating temperature range of -40°C to 105°C and a storage temperature range of -50°C to 150°C. This means that the optoisolator is able to tolerate extreme temperatures without compromising its performance. In addition, the EL2531 is designed to be resistant to shock and vibration, thus making it suitable for use in industrial or automotive applications.

To summarise, the EL2531 family of optoisolators are designed to provide true electrical isolation between the input and output ports and are suitable for applications from 3.5V to 24V. It supports modulation frequencies up to 30Mhz and has an operating temperature range of -40°C to 105°C. In addition, it is resistant to shock and vibration. The EL2531 is thus a versatile optoisolator chip that can be used in a wide range of digital or logic applications.

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