Features and Benefits

  • Stability in isolated feedback applications
    • 0.5% initial accuracy
    • 1% accuracy over the full temperature range
  • Compatible with Type II or Type III compensation networks
  • Reference voltage: 1.225 V
  • Compatible with DOSA
  • Low power operation: <7 mA total
  • Wide voltage supply range
    • VDD1: 3 V to 20 V
    • VDD2: 3 V to 20 V
  • Bandwidth: 400 kHz
  • Isolation voltage: 2.5 kV rms
  • Safety and regulatory approvals
    • UL recognition: 2500 V rms for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 565 V peak
  • Wide temperature range
    −40°C to +125°C ambient operation
  • 150°C maximum junction temperature
  • Qualified for automotive applications

Product Details

The ADuM3190 is an isolated error amplifier based on Analog Devices, Inc., iCoupler® technology. The ADuM3190 is ideal for linear feedback power supplies. The primary side controllers of the ADuM3190 enable improvements in transient response, power density, and stability as compared to commonly used optocoupler and shunt regulator solutions.

Unlike optocoupler-based solutions, which have an uncertain current transfer ratio over lifetime and at high temperatures, the ADuM3190 transfer function does not change over its lifetime, and it is stable over a wide temperature range of −40°C to +125°C.

Included in the ADuM3190 is a wideband operational amplifier for a variety of commonly used power supply loop compensation techniques. The ADuM3190 is fast enough to allow a feedback loop to react to fast transient conditions and overcurrent conditions. Also included is a high accuracy 1.225 V reference to compare with the supply output setpoint.

The ADuM3190 is packaged in a small 16-lead QSOP package for a 2.5 kV rms isolation voltage rating.


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

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.