ADUM4195-1WBRIZ

Overview

The ADUM4195-1WBRIZ is an isolated amplifier based on iCoupler technology, featuring a fixed gain of 1 and single-ended output. It operates with supply voltages VDD1 and VDD2 ranging from 4.5 V to 5.5 V. The device provides a bandwidth of 210 kHz and supports an input voltage range of 0.25 V to 4.3 V. It offers high isolation ratings, including 5000 V rms for 1 minute per UL 1577 and VIORM of 1401 V peak under DIN EN IEC 60747-17. The component is qualified for automotive applications (AEC-Q100) and functions within an ambient temperature range of −40°C to +125°C.

Feature Summary

• Provides galvanic isolation up to 5 kV rms certified by UL 1577.
• Maintains stable transfer function over lifetime without drift typical of optocouplers.
• Features low offset error and drift for precise isolated voltage sensing.
• Includes shutdown functionality with internal pull-down resistor.

Applications

• Inverters
• DC-DC converters
• On-board chargers

Procurement Notes

Verify the specific suffix 'W' indicates automotive qualification when sourcing. Confirm package type matches the required PCB footprint. Check regulatory compliance certificates relevant to your region. Ensure supply voltage requirements align with system design. Validate insulation characteristics against safety standards.

Selection Notes

Select this part for applications requiring high-voltage isolation with fixed unity gain. Consider the wide operating temperature range for harsh environments. Evaluate the CMTI rating for noisy power systems. Verify that the SOIC-8 package fits the available board space. Check if automotive qualification is necessary for the target market.

Part Context

This component belongs to the ADuM4195 family of isolated amplifiers. It utilizes coreless transformer technology for signal transmission across the isolation barrier. The family includes variants with adjustable gain and different packaging options. The W suffix denotes automotive-grade manufacturing control.

Replacement Considerations

ADUM4195-1BRIZ is the non-automotive equivalent. ADUM3195 series devices offer adjustable gain but differ in isolation voltage and pinout compatibility.

FAQ

What is the maximum working insulation voltage?

The maximum working insulation voltage (VIOWM) is 991 V rms according to DIN EN IEC 60747-17.

How does the device handle DC correctness?

It uses periodic refresh pulses to ensure DC correctness at the output in the absence of logic transitions.

Is the device immune to magnetic fields?

Yes, it is immune to external magnetic fields unless induced voltages exceed decoder thresholds.