ADUM4190ARIZ-RL

Overview

The ADUM4190ARIZ-RL is a high stability isolated error amplifier utilizing iCoupler technology. It features a 1.225 V reference, 10 MHz gain-bandwidth product, and 400 kHz bandwidth. The device offers 0.5% initial accuracy and ±1% total error over temperature. It operates on dual supplies from 3 V to 20 V with low power consumption under 7 mA. Reinforced isolation voltage is 5 kV rms in a 16-lead SOIC package.

Feature Summary

• Stable transfer function unaffected by lifetime degradation or high temperatures
• Integrated precision 1.225 V reference for accurate setpoint comparison
• High-speed op amp enables fast transient response and loop compensation
• Compatible with Type II or Type III compensation networks

Applications

• Linear feedback power supplies
• Inverters
• Uninterruptible power supplies (UPS)
• DOSA-compatible modules
• Voltage monitors

Procurement Notes

Verify the specific suffix 'ARIZ-RL' against official Analog Devices documentation to confirm the -40°C to +85°C operating range and reel packaging format. Ensure compatibility with required insulation standards such as UL 1577 and IEC/EN 60950-1 for the target application safety requirements.

Selection Notes

Select this component when replacing optocouplers requiring superior long-term stability and higher bandwidth. The 400 kHz bandwidth supports faster control loops compared to traditional solutions. Verify that the 16-lead wide-body SOIC package fits the PCB layout constraints for the necessary creepage and clearance distances.

Part Context

Part of the ADuM4190 family of isolated error amplifiers. The ARIZ variant specifies the industrial temperature range (-40°C to +85°C) and tube/reel packaging options. It serves as a direct replacement for optocoupler-based error amplification circuits in primary-side controlled converters.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.