SI8920BC-ISR

Special Purpose Amplifiers Overview

The SI8920BC-ISR is a single-channel isolated analog amplifier from the Si8920 series, manufactured by Skyworks Solutions. It features a CMOS isolation barrier with an insulation voltage of 1200 Vrms and a 3dB bandwidth of 950 kHz. The device operates on a supply voltage between 3 V and 5.5 V, drawing a typical operating current of 4.2 mA. Key electrical specifications include a maximum input offset voltage (Vos) of 200 µV and a gain error of 0.5%. It accepts differential inputs and provides differential outputs, with each channel capable of sourcing 3.8 mA. The component is housed in a 16-pin SOIC package and is designed for operation within a temperature range of -40°C to +125°C.

Special Purpose Amplifiers Feature Summary

• Provides galvanic isolation via a CMOS barrier rated at 1200 Vrms for high-voltage noise immunity.
• Delivers high precision with low input offset voltage and minimal gain error for accurate signal conditioning.
• Supports wide bandwidth operation suitable for fast-changing analog signals up to 950 kHz.

Special Purpose Amplifiers Applications

• Industrial process control systems requiring precise sensor signal isolation
• Medical equipment needing safe patient isolation interfaces
• Power electronics monitoring circuits

Special Purpose Amplifiers Procurement Notes

Verify the specific suffix 'IS' indicates reel packaging rather than tube, as this affects handling and storage requirements. Confirm RoHS compliance status through official documentation before integration. Check for end-of-life notices or obsolescence warnings directly from Skyworks Solutions to ensure long-term availability for production runs.

Special Purpose Amplifiers Selection Notes

Choose this part when a single-channel solution with 1200 Vrms isolation is required. Compare against the SI8920AC variant if a lower input offset specification is needed. Ensure the differential output matches the downstream ADC or amplifier input requirements. Verify that the 950 kHz bandwidth meets the system's signal frequency needs without excessive filtering.

Special Purpose Amplifiers Part Context

This component belongs to the Si8920 family of isolated amplifiers, which integrates analog signal path technology with capacitive isolation. The family offers various isolation ratings and accuracy levels. The SI8920BC-ISR specifically targets applications balancing moderate isolation voltage with high-speed performance and low power consumption in compact SMD packages.

Special Purpose Amplifiers Replacement Considerations

The SI8920AC-ISR is a similar device in the same series but may differ in input offset voltage specifications. Verify pinout compatibility and electrical parameter overlaps before substitution. No other direct cross-model replacements are confirmed in the provided data.