ADUM1401BRWZ

Overview

The ADuM1401BRWZ is a quad-channel digital isolator utilizing iCoupler magnetic coupling technology. It features four independent channels with 3/1 directionality (three transmitters, one receiver). Key electrical parameters include a data rate of 10 Mb/s, isolation voltage of 2500 Vrms, and common-mode transient immunity of 25 kV/µs. The device operates on a single power supply ranging from 2.7 V to 5.5 V. Typical operating currents are 31 mA for the driver side and 57 mA for the receiver side. Propagation delay is typically 32 ns, with rise and fall times of 3 ns. Pulse width distortion is less than 2 ns. The component supports an operating temperature range from -40°C to +105°C and is housed in a 16-lead SOIC package.

Feature Summary

• Integrates high-speed CMOS logic with monolithic air-core transformer technology for signal isolation without optical components.
• Provides bidirectional communication capability with low pulse width distortion and tight channel-to-channel matching.
• Includes patented refresh circuitry to maintain DC signal integrity during input logic transitions or power loss conditions.

Applications

• Isolation of SPI interfaces and data converters
• General-purpose multi-channel signal isolation
• Industrial fieldbus systems

Procurement Notes

Verify the specific suffix BRWZ against the manufacturer datasheet to confirm the standard commercial grade specifications and tube packaging format. Ensure compatibility with the target system's voltage levels and thermal requirements before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring four isolated channels with mixed directionality. It serves as a direct replacement for traditional optocouplers where lower power consumption and higher reliability are required. Consider the 10 Mbps data rate limit and the specific 3Tx/1Rx configuration constraints for the application architecture.

Part Context

This part belongs to the ADuM140x family of quad-channel digital isolators from Analog Devices. The series leverages iCoupler technology to replace legacy optocoupler designs. The BRWZ designation indicates the specific package type and commercial temperature rating within the broader product line.

Replacement Considerations

Direct replacements include other variants within the ADuM1400/ADuM1401/ADuM1402 family, such as the ADUM1401WSRWZ for automotive-grade applications. Verify that substitute parts match the required data rate and channel directionality.

FAQ

What is the channel directionality configuration of the ADuM1401?

The ADuM1401 features a 3/1 channel directionality, providing three transmitter channels and one receiver channel.

How does the device handle DC signal integrity?

It utilizes patented refresh circuitry to ensure correct DC output even when there are no input logic transitions or if one power supply is missing.