SI8442AB-D-IS

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Digital isolators are electronic components used to separate two electrical circuits that are not directly connected in order to introduce electrical insulation between them in order to prevent interference, surge protection, and leakage. The SI8442AB-D-IS isolator is a digital isolator designed to provide full galvanic isolation between two electrical pathways.

The SI8442AB-D-IS utilizes an opto-coupler along with a buffer circuit to provide up to 2 kV of isolation, making it ideal for use in circuits that require a high amount of electrical isolation.

The device has an integrated octal buffer/transreceiver which provides bi-directional bridge isolation with symmetrical data rate of up to 1 Mbps. It also has a low input and output leakage current of 7 ОјA over a wide temperature range. The device also offers low power consumption and wide operating temperature range from -40 to +85 В°C.

The SI8442AB-D-IS is intended for a wide range of applications such as medical equipment, industrial automation, electrical testing and measurement, communication network equipment, and power supply systems. These applications require low-power, isolated, bidirectional data transfer and electrical signal conditioning with galvanic isolation.

The SI8442AB-D-IS works on the principle of opto-electronic coupling. The opto-coupler utilizes an LED that is mounted onto a silicon photodiode in order to transmit data across the isolator. The LED emits a light when a current is applied to it, and this light is detected by the photodiode. This creates a current to flow in the opposite direction through the photodiode and buffer circuit resulting in an electrical signal at the output. This signal is then transmitted across the isolator to the output side.

The SI8442AB-D-IS provides efficient electrical isolation by utilizing the principles of opto-coupling and buffering. It is designed for high-speed, isolated communication systems requiring a high amount of electrical isolation. It is also capable of providing multiple frequency ranges with full galvanic isolation making it a reliable, high-performance device for a wide range of applications requiring electrical isolation.

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