SI88444EC-ISR

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Digital isolators provide excellent isolation between two components and prevent electrical interference. The SI88444EC-ISR is a 1- or 2-channel integrated isolator optimized for digital applications. It provides an isolation voltage of 4.5 kVrms for an operating temperature range of -40°C to +125°C, for applications that require an even higher isolation voltage of 6 kVrms, and a very long service life of up to 10 years. This type of isolator is suitable for use in automotive, industrial, and communication and can operate even in high EM environments.

The main feature of SI88444EC-ISR digital isolator is its improved galvanic isolation between the input and output signals, reduce the common ground potential difference. This kind of isolator provides a galvanic isolation that is optically isolated, eliminating the need for additional optoisolators. In addition, these isolators use a voltage detector to detect the input voltage and configure the isolators accordingly. This eliminates the need for a sense resistor to be used in applications.

The working principle of the SI88444EC-ISR digital isolator is based on the voltage regulator concept. Isolation voltage : The SI88444EC-ISR isolator produces a difference between the input and output pins to provide the required isolation level. The isolation voltage created by the SI88444EC-ISR is adjustable and depends on the input voltage for stable typical output voltage. This feature also enables relatively low leakage current, while maintaining the required isolation voltage. The International Standard Safety Layer also helps eliminate leakage currents and electrostatic discharge in contact with other components.

Moreover, the SI88444EC-ISR isolator has a low power consumption and a low signal fading rate, thanks to its built-in line regulation feature. It also features a wide input range, which means it can be operated from both AC and DC power sources. This also allows for a more robust operation even in the presence of power surges and voltage drops.

In addition, the SI88444EC-ISR isolator has an overload protection mechanism. It can be shut down in case an over-voltage is detected from the input side. It also provides a quiet operation, thanks to its low switching noise, low EMI level and low power dissipation. This makes it suitable for use in automation systems, medical devices, telecom switching, industrial controllers and more.

The SI88444EC-ISR is a popular choice for digital isolator applications because of its superior performance and low cost. The improved signal integrity, long service life, and low power consumption make it an ideal choice for many industrial and automotive applications.

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