SI8920AD-IS

Overview

The SI8920AD-IS is a single-channel isolated analog amplifier from the Si8920 series, manufactured by Skyworks Solutions. It features a differential input and output configuration within a 16-lead SOIC package. The device operates on a supply voltage ranging from 3 V to 5.5 V with a typical operating current of 4.2 mA. Key electrical specifications include a 3 dB bandwidth of 950 kHz, an input offset voltage (Vos) of 200 µV, and a gain error of 0.5%. It provides 1200 Vrms isolation capability using CMOS technology and supports a differential output current of 3.8 mA per channel.

Feature Summary

• Provides galvanic isolation between input and output circuits using CMOS technology for high reliability.
• Supports differential signal inputs and outputs to maintain signal integrity in noisy environments.
• Delivers low input offset voltage and precise gain characteristics for accurate analog signal conditioning.

Applications

• Industrial process control systems requiring isolated sensor interfaces
• Medical equipment needing patient isolation and safety compliance
• Power electronics monitoring where high common-mode voltages are present

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Check for end-of-life notifications as availability may be restricted. Ensure storage conditions meet humidity sensitivity requirements to prevent damage before reflow soldering.

Selection Notes

Select this part when a single-channel isolated amplifier with differential I/O is required. Compare against the SI8920AC variant if a different input range specification is needed. Consider the SI8922 series for higher insulation voltage ratings or single-ended output configurations. Verify that the 1200 Vrms isolation rating meets the specific safety standards of the target application.

Part Context

This component belongs to the Si8920 family of isolated amplifiers designed for precision applications. It complements other variants like the SI8920AC and SI8920BD which share similar core architectures but differ in specific input/output characteristics. The family utilizes capacitive coupling for signal transmission across the isolation barrier.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate functional equivalents based on matching isolation voltage, bandwidth, and package dimensions. Consult manufacturer guidelines for pin-compatible alternatives within the same product line.