SI8920AC-ISR

Overview

The SI8920AC-ISR is a single-channel isolated analog amplifier from the Si8920 series, manufactured by Skyworks Solutions. It features a 1200 Vrms insulation voltage and CMOS isolation technology. The device operates on a supply voltage between 3 V and 5.5 V with a typical operating current of 4.2 mA. It provides a 3dB bandwidth of 950 kHz and an input offset voltage (Vos) of 200 uV. The gain error is specified at 0.5%. It accepts differential inputs and provides differential outputs, delivering up to 3.8 mA per channel. Power dissipation is 212 mW. It functions within a temperature range of -40°C to +125°C and is housed in a 16-pin SOIC package.

Feature Summary

• CMOS-based digital isolation for high reliability
• Differential input and output signal processing
• High insulation voltage capability

Applications

• Industrial process control systems
• Medical equipment requiring galvanic isolation
• Power monitoring and protection circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Check for obsolescence notices as the product lifecycle status indicates potential end-of-life conditions. Ensure storage conditions adhere to moisture sensitivity level requirements to prevent package damage during soldering.

Selection Notes

Select this component when differential signal amplification across a high-voltage barrier is required. The 1200 Vrms isolation rating suits applications needing robust galvanic separation. Consider the 950 kHz bandwidth for medium-speed signal transmission. Verify that the 16-pin SOIC footprint fits the design constraints. Compare against other Si8920 variants if different input ranges or packaging options are needed.

Part Context

This part belongs to the Si8920 family of isolated analog amplifiers. It shares core architecture with other members like SI8920BD-IS but differs in specific electrical characteristics and packaging configurations. The series utilizes Skyworks' proprietary CMOS isolation technology to replace traditional transformer or optocoupler solutions in precision analog applications.

Replacement Considerations

SI8920BD-IS is a related variant within the same series offering similar isolation performance.