SI8920BC-IPR

The SI8920BC-IPR isolation amplifier offers exceptional performance with low voltage differential input options, minimal signal delay, and outstanding precision. Its specifications include minimal input offset (0.2 mV), low gain error (<0.5%), excellent drift specifications, and high linearity (0.025% full-scale) with low noise (0.10 mVrms over 100 kHz bandwidth). It excels in common-mode transient immunity (75kV/µs) and is available in compact packages. Moreover, it is designed for reliability in automotive applications, featuring a wide temperature range (-40 to 125 °C), AEC-Q100 certification, and automotive-grade OPNs, with additional support for industry compliance documentation.

• Industrial and renewable energy inverters

• AC, Brushless, and DC motor controls and drives

• Variable speed motor control in consumer white goods

• Isolated switch mode and UPS power supplies

• Hybrid and EV traction inverters

• Onboard chargers

• Charging pedestals

The Si8920 is a galvanically isolated analog amplifier. The low-voltage

differential input is ideal for measuring voltage across a current shunt resistor or for any place where a sensor must be isolated from the control system. The output is a differential analog signal amplified by either 8.1x or 16.2x.

The very low signal delay of the Si8920 allows control systems to respond quickly to fault conditions or changes in load. Low offset and gain drift ensure that accuracy is maintained over the entire operating temperature range. Exceptionally high commonmode transient immunity means that the Si8920 delivers accurate measurements even in the presence of high-power switching as is found in motor drive systems and inverters.

The Si8920 isolated amplifier utilizes Skyworks’ proprietary isolation technology. It supports up to 5.0 kVrms withstand voltage per UL1577. This technology enables higher performance, reduced variation with temperature and age, tighter part-to-part matching, and longer lifetimes compared to other isolation technologies.

Automotive Grade is available for certain part numbers. These products are built using automotive-specific flows at all steps in the manufacturing process to ensure the robustness and low defectivity required for automotive applications.

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