ADUM342E1BRQZ

Overview

The ADUM342E1BRQZ is a quad-channel digital isolator from Analog Devices, utilizing iCoupler technology with integrated CMOS and monolithic transformer components. It provides four independent data channels in a QSOP-16 package. The device supports unidirectional signal transmission at data rates up to 150 Mb/s. It operates on supply voltages ranging from 2.25 V to 5.5 V. Key electrical parameters include an insulation voltage of 3000 Vrms, typical propagation delays of 6.2 ns, and maximum delays of 10 ns. Operating current varies between 5.3 mA and 7.3 mA depending on configuration. The unit functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates high-speed CMOS logic with back-to-back monolithic air-core transformer technology for robust magnetic coupling isolation.
• Provides four independent data channels with strict channel matching capabilities to ensure signal integrity across the isolation barrier.
• Features fault-safe design options allowing input pins to default to a high or low state upon loss of power or signal.
• Complies with CISPR 32/EN 55032 Class B emission limits when operating at specified data rates.

Applications

• Isolation for Serial Peripheral Interface (SPI) communication links
• Signal isolation for RS-485 and Controller Area Network (CAN FD) buses
• Industrial fieldbus system isolation
• Pulse Width Modulation (PWM) controller signal isolation

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm that the received part matches the specific ADUM342E1BRQZ designation and packaging format. Check for moisture sensitivity labeling as indicated in specifications. Ensure storage conditions comply with handling guidelines for surface mount devices to prevent degradation prior to assembly.

Selection Notes

Select this component when four isolated bidirectional or unidirectional channels are required within a single package. Consider its 150 Mb/s data rate capability for high-speed serial protocols. Evaluate the 3000 Vrms insulation rating against system safety requirements. Compare power consumption characteristics against other isolators if energy efficiency is a primary constraint for the application design.

Part Context

This device belongs to the ADuM34xE family of quad digital isolators. It shares architectural similarities with the ADUM340E and ADUM341E models but differs in channel configuration and specific isolation ratings. The family leverages proprietary iCoupler technology to replace traditional optocouplers, offering smaller form factors and improved reliability for industrial and automotive applications requiring galvanic isolation.

Replacement Considerations

The ADUM340E1BRWZ serves as a related variant within the same product family, though it utilizes a SOIC-16 package rather than QSOP-16. Verify pinout compatibility and thermal performance differences before substitution. Cross-reference datasheet specifications for exact insulation voltage and propagation delay tolerances to ensure functional equivalence in the target circuit.