ADUM7642ARQZ-RL7

Overview

The ADUM7642ARQZ-RL7 is a six-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and provides an isolation voltage of 1000 Vrms. The device supports bidirectional data transmission at a maximum data rate of 1 Mb/s. Key electrical specifications include a typical propagation delay of 20 ns, with rise and fall times of 2.8 ns. It features a common-mode transient immunity (CMTI) of 15 kV/µs and maintains signal integrity with a pulse width distortion of 250 ns. The component functions reliably across an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates six independent digital isolation channels within a single compact package.
• Employs iCoupler magnetic coupling technology for galvanic isolation without transformers or optocouplers.
• Provides high common-mode transient immunity to protect against noise in harsh environments.
• Supports bidirectional data flow for flexible system architecture design.

Applications

• Industrial automation systems requiring multi-channel signal isolation
• Medical equipment needing reliable galvanic separation
• Power electronics interfaces for gate drive isolation
• Inverters and motor control circuits

Procurement Notes

Verify the specific suffix 'RL7' indicates reel packaging when sourcing. Confirm the 'A' grade designation matches required performance tolerances. Check current availability status as supply may be limited. Ensure the QSOP-20 footprint aligns with PCB layout constraints. Validate RoHS compliance requirements for the target assembly process.

Selection Notes

Select this component when six isolated channels are necessary within a single footprint. Consider the 1 Mb/s data rate limit for high-speed applications where faster alternatives like the CR variant might be needed. Evaluate the 1000 Vrms isolation rating against system safety standards. Compare power consumption figures if battery operation is critical. Assess thermal management needs given the operating temperature range.

Part Context

This part belongs to the ADuM764x family of six-channel digital isolators. It shares the same core iCoupler technology and pinout structure as other variants in the series, such as the CRQZ version which offers higher data rates. The ARQZ variant focuses on standard speed performance with bidirectional capability. It serves as a direct replacement for older optocoupler arrays in space-constrained designs.

Replacement Considerations

The ADUM7642CRQZ-RL7 is a confirmed substitute offering identical pinouts but with increased data rates up to 25 Mbps. Verify that the higher speed does not introduce unnecessary power consumption or EMI issues for the specific application. Both parts share the same 20-QSOP package and isolation ratings.