ADUM3190WTRQZ

Overview

The ADUM3190WTRQZ is a high stability isolated error amplifier based on iCoupler technology, packaged in a 16-lead QSOP. It provides galvanic isolation with a rated voltage of 2.5 kVrms and supports supply voltages from 3 V to 20 V on both sides. The device features a 400 kHz bandwidth, 10 MHz gain-bandwidth product, and ±1% accuracy over the full temperature range. It includes an internal 1.225 V reference and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Provides stable isolated feedback for power supplies without lifetime drift associated with optocouplers
• Integrates a wideband operational amplifier for loop compensation and transient response
• Includes a high accuracy internal reference voltage for precise output setpoint comparison
• Offers dual isolated outputs to drive various PWM controller input requirements

Applications

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

Procurement Notes

Verify the specific suffix WTRQZ corresponds to the reel packaging configuration required for your assembly line. Confirm that the automotive qualification status meets your system's reliability standards. Ensure ESD precautions are strictly followed during handling due to the sensitivity of the CMOS isolator structure. Cross-reference the regulatory approvals against your target market safety certifications before finalizing the design.

Selection Notes

Select this component when replacing optocouplers to improve transient response and eliminate current transfer ratio variations. Consider the EAOUT and EAOUT2 pin capabilities to match the input requirements of your downstream PWM controller. Evaluate the 400 kHz bandwidth against your switching frequency to ensure adequate loop stability. Verify that the 16-lead QSOP package dimensions fit your PCB layout constraints.

Part Context

This part belongs to the ADuM3190 family of isolated error amplifiers manufactured by Analog Devices. It utilizes proprietary iCoupler technology to provide digital isolation across a silicon die. The family is designed to replace traditional analog isolation methods, offering superior stability and lower power consumption compared to discrete solutions involving optocouplers and shunt regulators.

Replacement Considerations

Direct replacements include the ADUM3190WBRQZ for tube packaging or the ADUM3190WTRIZ for SOIC-16 packaging. Check the ADUM4190 series if higher isolation voltage ratings are required.