ADUM341E1WBRQZ

Overview

The ADUM341E1WBRQZ is a quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features a 3:1 channel configuration with three unidirectional inputs on Side 1 and one on Side 2. The device supports data rates up to 150 Mbps and operates within a supply voltage range of 2.25V to 5.5V. Key electrical parameters include a typical propagation delay of 6.2 ns, maximum pulse width distortion of 3 ns, and common mode transient immunity of 100 kV/µs. It provides isolation voltages of 3 kVrms or 5.7 kVrms depending on the specific variant rating and is housed in a 16-lead QSOP package.

Feature Summary

• Integrates four independent digital channels using monolithic air-core transformer technology for high-speed signal transmission across isolation barriers.
• Provides enhanced safety certifications including UL 1577 recognition and VDE compliance for industrial applications.
• Features fault-safe logic options (E1/E0) to ensure defined output states during power loss or input failure.
• Delivers high common-mode transient immunity to maintain signal integrity in electrically noisy environments.

Applications

• Isolation for CAN and CAN FD bus interfaces in automotive systems
• Signal isolation for RS-485 communication networks
• SPI interface isolation for data converters and microcontrollers
• PWM controller signal isolation in motor drive applications

Procurement Notes

Verify the specific suffix and insulation rating requirements against your design specifications, as the ADUM341 family includes variants with different isolation voltage ratings (3kVrms vs 5.7kVrms). Confirm availability status directly with authorized distributors, as supply constraints may affect lead times. Ensure the selected package matches your PCB footprint requirements, specifically the 16-QSOP dimensions.

Selection Notes

Select this component when a 3:1 directional data flow is required between isolated domains. It is suitable for applications needing high CMTI and low propagation delay. Compare against the ADUM340E for bidirectional needs or the ADUM342E for symmetric 2:2 channel configurations. Ensure the operating temperature range meets the -40°C to +125°C requirement for harsh environments.

Part Context

This part belongs to the ADuM34xE series of quad digital isolators. These devices are designed to replace traditional optocouplers, offering superior performance in speed, power consumption, and size. The series supports multiple industry-standard communication protocols and is qualified for automotive applications under AEC-Q100 standards.

Replacement Considerations

Direct functional substitutes within the same family include ADUM341E0WBRQZ (different fault-safe option) and ADUM342E1WBRQZ (different channel configuration). Cross-family replacements like ADuM1401 require careful evaluation of channel count and isolation voltage differences.

FAQ

What is the difference between ADUM341E1 and ADUM341E0?

The primary difference lies in the fault-safe logic state. The E1 suffix indicates a fault-safe high output, while the E0 suffix indicates a fault-safe low output when the device is powered down or inputs are inactive.

Does this device support bidirectional communication?

No, the ADUM341E1WBRQZ is configured for unidirectional data flow with a 3:1 channel split. For bidirectional applications, consider the ADUM340E series which offers 2:2 channel configurations.