ELW2601S(TA)-V

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Optoisolators – Logic Output

Optoisolators are used to provide electrical isolation between two circuits, thus preventing malfunction or damage of the connected circuits. One type of optoisolator that is specifically used to provide digital logic isolation is the ELW2601S(TA)-V. In this article, we will discuss the specific application field and working principle of the ELW2601S(TA)-V.

Application Field of ELW2601S(TA)-V

The ELW2601S(TA)-V is a high speed 3-Channel CMOS optoisolator. It is designed for digital logic isolation for devices such as digital signal processors, microprocessors, and PCs. It is perfect for use in applications where devices need to be isolated from each other in order to increase reliability and safety. The ELW2601S(TA)-V is well suited for applications in noise tolerant automotive infotainment architectures, as well as industrial control systems wherein high noise immunity is required for safe operation.

Working Principle of ELW2601S(TA)-V

The design of the ELW2601S(TA)-V works by connecting the logic output of an integrated circuit or microcontroller to two CMOS photo detectors via optoisolating means. The electrical output from the IC or microcontroller is used to drive the optoisolator’s LED, which is then detected by the photo detectors. The output from the photo detectors is then sent to the logic input of the IC or microcontroller. This isolated logic output architecture provides complete electrical isolation between the transmitting and receiving logic circuits, allowing signals to be transmitted safely.

The ELW2601S(TA)-V is also capable of providing both 3.3V and 5V logic outputs, depending on the order in which the photo detectors are connected. This makes the ELW2601S(TA)-V particularly useful in applications where the impedance of the logic output circuit needs to match the impedance of the logic input circuit.

In order to ensure safe operation of the ELW2601S(TA)-V, it is important to carefully select the opto-isolator. This is because the maximum current capacity of the ELW2601S(TA)-V is limited to 5mA. Therefore, a higher current capacity opto-isolator should be chosen if the current requirements of the logic circuit are greater than 5mA.

Conclusion

In conclusion, the ELW2601S(TA)V provides a reliable and efficient means for digital logic isolation. It is designed for applications such as digital signal processors, microprocessors, and PCs, where high noise immunity and improved system reliability are essential. With its ability to provide both 3.3V and 5V logic outputs, the ELW2601S(TA)-V is an ideal choice for a wide variety of digital logic isolation applications, such as automotive infotainment architectures and industrial control systems.

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