SI8922BD-AS4R

Special Purpose Amplifiers Overview

The SI8922BD-AS4R is an automotive-grade, galvanically isolated analog amplifier designed for current shunt measurement. It features a single-ended output and a specified linear input range of ±250 mV. The device utilizes proprietary CMOS isolation technology to support up to 5.0 kVRMS withstand voltage per UL1577. Key electrical characteristics include a typical gain error of ±0.06%, a signal delay of 1 µs, and high common-mode transient immunity of 75 kV/µs. It operates within a temperature range of –40 °C to +125 °C.

Special Purpose Amplifiers Feature Summary

• Automotive-grade qualification with AEC-Q100 certification and AIAG-compliant PPAP documentation support.
• Galvanic isolation barrier supporting up to 5.0 kVRMS withstand voltage using proprietary CMOS technology.
• Fail-safe output functionality that activates upon loss of the high-voltage-side supply (VDDA).
• Low signal delay and excellent drift specifications ensuring accuracy across the operating temperature range.

Special Purpose Amplifiers Applications

• Automotive onboard chargers and battery management systems.
• Industrial, HEV, and renewable energy inverters.
• AC, brushless, and DC motor controls and drives.
• Isolated switch mode and UPS power supplies.

Special Purpose Amplifiers Procurement Notes

Verify the specific ordering suffix AS4R against official Skyworks documentation to confirm package type and reel quantity. Ensure compliance with Moisture Sensitivity Level 2A requirements during solder assembly. Confirm that the automotive-grade variant meets all necessary AIAG-compliant PPAP documentation standards for your specific application context.

Special Purpose Amplifiers Selection Notes

Select this component when a single-ended output is required for differential current sensing applications. The ±250 mV input range accommodates higher resistance shunts compared to lower-range variants. Verify that the 1 µs signal delay and 600 kHz bandwidth meet the timing requirements of your control system loop.

Special Purpose Amplifiers Part Context

This part belongs to the Si892x family of isolated amplifiers manufactured by Skyworks Solutions. The 'B' designation indicates the ±250 mV input range option, while 'D' specifies the 5.0 kVRMS insulation rating. The 'AS4R' suffix denotes the automotive-grade wide-body SOIC package configuration in a tape-and-reel format.

Special Purpose Amplifiers Replacement Considerations

SI8922BD-IS4R