ADUM141E1BRQZ-RL7

Digital Isolators Overview

The ADUM141E1BRQZ-RL7 is a quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features four channels with a 3:1 input-to-output configuration (three inputs, one output). The device supports data rates up to 150 Mbps and offers a common-mode transient immunity of 75 kV/µs. It operates within a supply voltage range of 1.7 V to 5.5 V and provides isolation voltages of 3000 Vrms or 3750 Vrms depending on the specific variant rating. Propagation delay is typically 13 ns, with rise and fall times of 2.5 ns. It is housed in a 16-SSOP package and functions across an operating temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates four independent digital isolation channels using proprietary iCoupler magnetic coupling technology for high-speed signal transmission.
• Provides robust common-mode transient immunity of 75 kV/µs to maintain signal integrity in electrically noisy environments.
• Supports unidirectional data flow with a flexible 3:1 channel configuration, suitable for complex bus isolation applications.

Digital Isolators Applications

• Isolation of serial communication interfaces such as SPI, I2C, and UART in industrial systems.
• Signal isolation in medical equipment requiring galvanic separation between patient-connected circuits and processing units.
• Data acquisition systems where high-speed ADC/DAC interfaces require noise rejection and ground potential difference management.

Digital Isolators Procurement Notes

Verify the specific insulation rating (3000 Vrms vs 3750 Vrms) required for your safety standards, as this varies by suffix. Confirm the package type matches your PCB footprint, as the BRQZ suffix indicates SSOP packaging. Ensure compatibility with your system's logic voltage levels, which range from 1.7 V to 5.5 V. Check moisture sensitivity level requirements for your reflow soldering profile. Always reference the official datasheet for absolute maximum ratings and thermal dissipation limits before finalizing procurement.

Digital Isolators Selection Notes

Select this component when high-speed bidirectional or unidirectional isolation is needed with minimal propagation delay. The 3:1 channel layout is optimal for isolating multi-line buses like SPI or parallel data lines where fewer output signals are required. Consider the 75 kV/µs CMTI if the environment has high dv/dt noise. Compare against other iCoupler variants if different channel counts or lower power consumption are prioritized over speed.

Digital Isolators Part Context

This part belongs to the ADuM141E series of general-purpose digital isolators. It is part of Analog Devices' iCoupler family, which replaces traditional optocouplers and transformer-based isolators. The series is designed for applications requiring high reliability, small form factor, and consistent performance across wide temperature ranges. The RL7 suffix denotes tape and reel packaging for automated assembly.

Digital Isolators Replacement Considerations

Direct replacements include ADUM141E1BRWZ (SOIC package) or ADUM141E1WBRQZ-RL7 (SSOP package) if pinout and electrical characteristics match. Verify that substitute parts maintain the same 3:1 channel configuration and 150 Mbps data rate. Ensure the replacement meets the required isolation voltage and CMTI specifications for your application safety standards.