ADUM3190ARQZ-RL7

Overview

The ADUM3190ARQZ-RL7 is a high stability isolated error amplifier based on iCoupler technology, designed for linear feedback power supplies. It features a 1.225 V reference voltage and operates with supply voltages from 3 V to 20 V on both sides. The device provides a 400 kHz bandwidth and 2.5 kV rms isolation voltage. It offers 0.5% initial accuracy and 1% total error over the temperature range of −40°C to +85°C. The component is packaged in a 16-lead QSOP format.

Feature Summary

• Provides stable isolated feedback for primary side controllers without lifetime drift associated with optocouplers
• Integrates a wideband operational amplifier compatible with Type II or Type III compensation networks
• Includes a high accuracy internal reference voltage for precise output setpoint comparison
• Delivers fast transient response capabilities suitable for overcurrent conditions

Applications

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

Procurement Notes

Verify that the specific ARQZ suffix corresponds to the A-grade automotive qualification and the specified operating temperature range of −40°C to +85°C. Confirm package integrity for the 16-QSOP form factor. Ensure compatibility with the required isolation voltage ratings for your safety standards before finalizing procurement orders.

Selection Notes

Select this component when replacing optocouplers to achieve superior stability and faster loop response times. Consider the EAOUT and EAOUT2 pin configurations to match the input requirements of your PWM controller. Evaluate the need for external compensation networks to ensure control loop stability within the 400 kHz bandwidth limit.

Part Context

This part belongs to the ADuM3190 family of isolated error amplifiers manufactured by Analog Devices Inc. It utilizes patented iCoupler technology to provide galvanic isolation. The device is qualified for automotive applications and meets various international safety regulatory approvals including UL, IEC, and VDE standards for reinforced insulation.

Replacement Considerations

Direct replacements include other variants within the ADuM3190 series such as the ADUM3190BRQZ or ADUM3190SRQZ, depending on the required bandwidth and temperature grade. Verify pinout compatibility and isolation voltage ratings when substituting.