ADUM4190BRIZ

Overview

The ADuM4190BRIZ is a high stability isolated error amplifier utilizing iCoupler technology. It provides a 1.225 V reference and operates with supply voltages from 3 V to 20 V on both sides. The device features a 400 kHz bandwidth, 5 kV rms reinforced isolation voltage, and total accuracy of 1% over the full temperature range. It includes two outputs: EAOUT (±3 mA) and EAOUT2 (±1 mA). Operating temperatures range from −40°C to +125°C.

Feature Summary

• Stable transfer function that does not change over lifetime or temperature
• Integrated precision 1.225 V reference for accurate setpoint comparison
• Compatible with Type II or Type III compensation networks
• Supports DOSA-compatible modules

Applications

• Linear feedback power supplies
• Inverters
• Uninterruptible power supplies (UPS)
• Voltage monitors

Procurement Notes

Verify the specific grade suffix (B) against the ordering guide to confirm the 400 kHz bandwidth specification. Ensure the package type matches the wide body 16-lead SOIC requirement. Confirm regulatory approvals such as UL 1577 and IEC/EN 60950-1 are required for the target application safety standards.

Selection Notes

Select this component when replacing optocouplers to eliminate current transfer ratio uncertainty. Choose based on the required bandwidth; the B grade offers 400 kHz compared to lower grades. Verify that the 1.225 V internal reference meets the system accuracy requirements without external components.

Part Context

This part belongs to the ADuM4190 family of isolated error amplifiers. It replaces traditional optocoupler and shunt regulator solutions in primary side control loops. The family utilizes capacitive coupling technology to provide galvanic isolation while maintaining signal integrity across the barrier.

Replacement Considerations

Direct substitutes include other ADuM4190 variants with different bandwidth grades (e.g., A, S, T) if speed requirements differ. Check pin compatibility with existing PCB layouts designed for standard SOIC packages.