Skyworks Solutions, Inc. Special Purpose Amplifiers SI8921BB-IS

The SI8921BB-IS is a galvanically isolated analog amplifier designed for current shunt measurement applications. It features a low-voltage differential input with a specified input range of ±250 mV and provides a differential output signal amplified by 8.2x or 32.8x. The amplifier exhibits a low signal delay of 0.8 µs, ensuring rapid response to changes in load or fault conditions. This product maintains high accuracy across its operating temperature range, with a typical input offset of ±40 µV and a gain error of ±0.06%. It also demonstrates excellent drift characteristics, including a typical offset drift of ±0.5 µV/°C and a gain drift of ,Äì9 ppm/°C. The SI8921BB-IS offers high common-mode transient immunity of 75 kV/µs, making it suitable for environments with significant electrical noise, such as motor drive systems and inverters. The device is certified for safety with a withstand voltage of up to 2.5 kVrms per UL1577, and it is available in an 8-pin narrow body SOIC package. Applications include industrial inverters, motor controls, and automotive battery management systems.