ADUM4190SRIZ-RL

Overview

The ADUM4190SRIZ-RL is a high stability isolated error amplifier from Analog Devices, utilizing iCoupler technology for galvanic isolation. It features a 5 kVrms reinforced insulation rating and operates within a supply voltage range of 3 V to 20 V on both sides. The device provides a stable 1.225 V reference with ±1% accuracy over the full temperature range of -40°C to +125°C. Key electrical parameters include a gain bandwidth product of 10 MHz, a 3 dB bandwidth of 200 kHz, and a common-mode rejection ratio of 72 dB. It is housed in a 16-lead SOIC package.

Feature Summary

• Provides stable transfer function unaffected by lifetime degradation or high temperatures compared to optocouplers.
• Integrates a wideband operational amplifier suitable for Type II or Type III compensation networks.
• Includes a high accuracy internal reference voltage for precise output setpoint comparison.
• Offers dual isolated outputs (EAOUT and EAOUT2) to accommodate various PWM controller input requirements.

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required reel packaging configuration. Ensure compliance with humidity sensitivity handling protocols during storage and assembly. Cross-reference regulatory approvals against target market safety standards prior to integration.

Selection Notes

Select this component when primary side control requires superior transient response and stability over traditional optocoupler solutions. Consider the dual output options if the downstream PWM controller necessitates higher drive voltages than standard low-side outputs provide. Evaluate thermal derating curves if operating near maximum ambient temperature limits.

Part Context

This part belongs to the ADuM4190 series of isolated error amplifiers designed to replace optocoupler and shunt regulator combinations. It leverages silicon dioxide (SiO2) based digital isolation technology to ensure long-term reliability and consistent performance across wide temperature variations without current transfer ratio drift.

Replacement Considerations

Direct substitutes include other ADuM4190 variants such as ADUM4190ARIZ or ADUM4190BRIZ depending on the required temperature grade and packaging format. Verify that alternative packages maintain the necessary creepage and clearance distances for reinforced isolation ratings.