ADUM4190SRIZ

Overview

The ADuM4190SRIZ 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 provides 5 kV rms reinforced isolation with UL 1577 and IEC/EN 60950-1 approvals. Operating on dual supplies from 3 V to 20 V, it delivers ±1% accuracy over the -40°C to +125°C temperature range in a 16-lead SOIC package.

Feature Summary

• Stable transfer function unaffected by lifetime degradation or temperature variations unlike optocouplers
• Integrated wideband operational amplifier supporting Type II or Type III compensation networks
• High accuracy internal 1.225 V reference voltage for precise output setpoint comparison
• Reinforced 5 kV rms isolation rating with comprehensive safety regulatory approvals

Applications

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

Procurement Notes

Verify the specific suffix 'SRIZ' corresponds to the -40°C to +125°C operating temperature grade and SOIC-16 packaging. Confirm that the required insulation voltage and regulatory approvals align with the target application's safety standards. Ensure supply voltages remain within the 3 V to 20 V range for both sides.

Selection Notes

Select this component when superior loop stability and transient response are required compared to optocoupler-based solutions. The integrated op amp allows for direct compensation network implementation without external buffering. Consider the EAOUT and EAOUT2 drive capabilities to match the input requirements of the downstream PWM controller.

Part Context

Analog Devices manufactures the ADuM4190 series as part of its iCoupler technology portfolio, which combines CMOS signal processing with monolithic transformer isolation. This approach eliminates the non-linearities and current transfer ratio uncertainties associated with traditional optical isolation components.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.