ADUM340E1BRQZ

Overview

The ADUM340E1BRQZ is a quad-channel digital isolator from Analog Devices Inc., utilizing iCoupler technology with magnetic coupling. It features four unidirectional data channels in a 4:0 configuration, supporting data rates up to 150 Mbps. The device operates on supply voltages ranging from 2.25 V to 5.5 V and provides an insulation voltage of 5.7 kVRMS. Key electrical parameters include a maximum propagation delay of 10 ns, typical pulse width distortion of 0.3 ns, and minimum common-mode transient immunity of 100 kV/µs. It is housed in a 16-lead QSOP package and is rated for operation between -40°C and +125°C.

Feature Summary

• Integrates four independent unidirectional data channels using chip-level magnetic coupling technology for high-speed signal transmission across isolation barriers.
• Provides robust noise immunity with high common-mode transient rejection capabilities, ensuring reliable data integrity in electrically noisy industrial environments.
• Supports flexible voltage level translation between sides, allowing compatibility with diverse system architectures operating within the specified supply range.
• Includes fault-safe output configurations that default to a defined logic state upon loss of input power or signal, enhancing system safety.

Applications

• Isolation for Serial Peripheral Interface (SPI) communication lines
• Signal isolation for RS-485 interfaces and Controller Area Network (CAN)
• Isolation for data converters and general-purpose multi-channel digital signals

Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and functional configuration, as variations exist within the family. Confirm AEC-Q100 qualification status if automotive compliance is required. Check current availability status as distribution may be limited. Ensure ESD protection requirements are met during handling and assembly processes.

Selection Notes

Select this component when four isolated bidirectional or unidirectional paths are needed with high speed and low latency. Compare against ADUM140 series for lower channel counts or different isolation ratings. Consider the QSOP package constraints for PCB layout. Verify that the 5.7 kVRMS rating meets the specific safety standards of the target application environment.

Part Context

This part belongs to the ADuM34xE family of quad digital isolators, which are backward compatible with earlier ADuM140 and ADuM240 series devices. The family leverages CMOS and monolithic transformer technology to replace traditional optocouplers. The 'E1' designation typically indicates a specific channel configuration and fault-safe output state within the broader product line.

Replacement Considerations

Officially documented substitutes include ADUM340E1BRWZ-RL and ADUM340E1BRQZ-RL7. These variants share identical electrical characteristics but differ in packaging format, such as tube versus reel quantities. Verify package dimensions and tape-and-reel specifications before substitution.