ADUM140D0BRZ-RL7

Overview

The ADUM140D0BRZ-RL7 is a quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features four forward channels and zero reverse channels in a unidirectional configuration. The device operates within a supply voltage range of 1.7 V to 5.5 V and supports data rates up to 150 Mb/s. Key electrical parameters include an isolation voltage of 3000 Vrms, a propagation delay of 15 ns, and rise/fall times of 2.5 ns. It functions reliably across an operating temperature range of -40°C to +125°C and is housed in a 16-pin QSOP package.

Feature Summary

• Integrates four independent digital isolation channels using proprietary iCoupler magnetic coupling technology for high-speed signal transmission.
• Provides robust protection against radiated and conducted noise with high common-mode transient immunity characteristics.
• Supports direct level translation between 1.8 V and 5 V logic domains without requiring external components.

Applications

• Industrial automation systems requiring galvanic isolation for sensor interfaces
• Medical equipment needing reliable signal separation between patient-connected circuits and processing units
• Power electronics control loops demanding high common-mode transient immunity

Procurement Notes

Verify the specific suffix BRQZ against the required QSOP-16 package, as standard variants may use SOIC-16. Confirm availability status directly with authorized distributors, as this part number may be subject to limited supply or discontinuation. Ensure compliance with RoHS directives and moisture sensitivity levels during storage and handling procedures.

Selection Notes

Select this component when a unidirectional, four-channel isolation solution is required for noisy environments. The 150 Mbps data rate suits moderate-speed digital communication protocols. Consider the 3000 Vrms isolation rating for safety-critical applications. Verify that the 1.7 V minimum supply voltage aligns with the target system's power rails.

Part Context

This device belongs to the ADuM140D series of digital isolators. It shares architectural similarities with other members like the ADUM140E1BRZ but differs in package type and specific electrical tolerances. The series leverages silicon dioxide insulation layers on CMOS chips to achieve isolation without optical components.

FAQ

What is the common-mode transient immunity (CMTI) specification?

The ADUM140D0BRZ-RL7 exhibits a common-mode transient immunity of 75 kV/µs, ensuring reliable operation in high-noise environments.

Does this isolator support bidirectional communication?

No, the ADUM140D0BRZ-RL7 is configured with four forward channels and zero reverse channels, making it strictly unidirectional.