ADUM7643ARQZ-RL7

Overview

The ADUM7643ARQZ-RL7 is a six-channel digital isolator utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 1 Mbps. The device provides 1000 Vrms isolation voltage and exhibits a common-mode transient immunity of 15 kV/µs. Propagation delays are typically 20 ns with rise and fall times of approximately 2.8 ns. It functions in an industrial temperature range from -40°C to +105°C and is housed in a 20-pin QSOP package.

Feature Summary

• Six independent bidirectional channels for high-density signal isolation
• Integrated magnetic coupling technology eliminates external transformer requirements
• High common-mode transient immunity ensures reliable operation in noisy environments
• Low power consumption suitable for battery-operated systems

Applications

• Industrial process control systems requiring multi-channel isolation
• Medical equipment with strict safety isolation standards
• Power metering applications needing precise signal separation
• Automotive electronics interfaces demanding robust noise rejection

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the QSOP-20 footprint matches the design layout exactly. Check for any recent product change notices regarding assembly site transfers or material updates that may affect long-term availability or specifications.

Selection Notes

Select this component when six isolated channels are required in a single package to save board space. It is appropriate for designs needing 1000 Vrms basic isolation with high-speed digital signals. Consider the 1 Mbps data rate limit against application timing requirements. Evaluate the 20-SSOP/QSOP package constraints against available PCB real estate and thermal management needs.

Part Context

This part belongs to the ADuM764x family of six-channel digital isolators from Analog Devices. It shares the iCoupler architecture with other members like the ADUM7640, differing primarily in channel configuration and specific electrical characteristics. The series is designed to replace traditional optocouplers in applications requiring higher reliability and lower power consumption.

Replacement Considerations

The ADUM7640ARQZ-RL7 is a verified substitute within the same family offering similar six-channel isolation capabilities. Verify pin-to-pin compatibility and specific propagation delay differences before swapping. Ensure the replacement meets all insulation voltage and CMTI requirements of the original design.