ADUM140D1BRQZ

Overview

The ADUM140D1BRQZ is a quad-channel digital isolator utilizing iCoupler magnetic coupling technology. It features four unidirectional channels with a data rate of 150 Mb/s and a common-mode transient immunity of 75 kV/µs. The device operates on a single power supply ranging from 1.7 V to 5.5 V, drawing approximately 12 mA per channel. It provides 3000 Vrms isolation voltage and functions within a temperature range of -40°C to +125°C. Packaged in a 16-lead QSOP (0.154 inch width), it offers propagation delays of 15 ns typical.

Feature Summary

• Integrates four independent unidirectional signal paths using proprietary iCoupler magnetic coupling technology for robust galvanic isolation.
• Provides high-speed data transmission capability up to 150 Mb/s with low propagation delay characteristics.
• Ensures signal integrity through high common-mode transient immunity ratings against fast-switching noise.
• Supports flexible logic interface operation across a wide supply voltage range without requiring isolated secondary supplies.

Applications

• Industrial automation systems requiring robust communication between microcontrollers and peripheral devices
• Medical equipment interfaces needing strict electrical isolation for patient safety compliance
• Power electronics control circuits isolating gate drivers from low-voltage logic controllers

Procurement Notes

Verify the specific suffix QZ indicates RoHS compliance and halogen-free status as per Analog Devices standards. Confirm the package variant matches the required 16-lead QSOP footprint dimensions. Ensure the unidirectional channel configuration aligns with system design requirements before ordering. Check for any recent product change notifications regarding material or manufacturing site updates.

Selection Notes

Select this component when four unidirectional isolated channels are required at speeds up to 150 Mb/s. It is suitable for designs needing 3000 Vrms isolation without bidirectional data flow needs. Consider the 12 mA per channel current consumption against total power budget constraints. The wide operating temperature range supports harsh industrial environments.

Part Context

This part belongs to the ADuM140 series of general-purpose digital isolators from Analog Devices. It complements other variants like the ADUM140D1BRZ which shares similar electrical specifications but may differ in packaging or environmental certifications. The series leverages silicon dioxide insulation layers for reliable long-term performance.

Replacement Considerations

The ADUM140D1BRZ is a documented alternative offering identical electrical performance in a standard SOIC-16 package. Verify pinout compatibility and thermal dissipation requirements when substituting the QSOP package for the SOIC variant.