SI8441AB-C-IS1

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Digital Isolators are electronic components used to provide isolation between two different circuits. This allows for protection from power disturbances, avoiding electrical or electromagnetic interference (EMI). Isolation also enables the two circuits to operate at different supply voltages, thus reducing the risk of a malfunction or electrical accident. The SI8441AB-C-IS1 is a high-performance digital isolator that provides galvanic isolation between two separate systems.

The SI8441AB-C-IS1 is a four-channel, high-speed, digital isolator that uses an array of vertical-cavity surface-emitting lasers (VCSELs). The VCSELs provide data communication across the isolation boundary via light transmission. This isolator is designed for use in applications where data must be isolated from a variety of devices. It is suitable for both upstream and downstream signaling and is compliant with UL 60950.

This digital isolator is ideal for applications that require medium-speed data transmission over relatively short distances. The device supports up to 8 Mbps data transmission with a propagation delay of less than 10 μs (7.9 μs max). Additionally, it supports full-duplex communication with CMC_Fe²⁺ isolation, allowing for up to 1,750-Vrms isolation at a frequency of up to 1 kHz. The SI8441AB-C-IS1 also features a power consumption of 0.75 W.

The SI8441AB-C-IS1 is designed for use in a variety of applications including industrial control, medical systems, computing systems, automotive and avionics systems. It is suitable for applications that require reliable communication across galvanic isolation boundaries. It has an operating temperature range of -40°C to +105°C and is UL/IEC/EN 60950 compliant.

The SI8441AB-C-IS1 works by providing a physical barrier between two systems, thus preventing any electrical energy or signal from crossing into the other system. It uses an array of vertical-cavity surface-emitting lasers (VCSELs) to transmit data using light instead of electrical signals. The VCSELs convert electrical signals to light pulses and transmit them across the isolation barrier, which is composed of an insulating material. On the other side, a photodetector receives the light pulse and then converts the pulse back into an electrical signal which is then sent to the other system.

The SI8441AB-C-IS1 provides a high-performance digital isolator that is ideal for use in applications requiring reliable communication across galvanic isolation boundaries. It supports up to 8 Mbps data transmission with a propagation delay of less than 10 μs and features CMC_Fe²⁺ isolation and a power consumption of 0.75 W. It is compliant with UL 60950 and designed for use in a variety of industrial, medical, computing, automotive and avionic applications.

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