ADUM7640ARQZ-RL7

Overview

The ADUM7640ARQZ-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 supports bidirectional communication at data rates up to 1 Mb/s. The device provides an isolation voltage of 1000 Vrms with a common-mode transient immunity (CMTI) of 15 kV/µs. Key electrical parameters include a maximum propagation delay of 20 ns and rise/fall times of 2.8 ns. It functions reliably across an extended temperature range of -40°C to +105°C and is housed in a 20-lead QSOP package.

Feature Summary

• Six independent channels for high-density signal isolation
• Bidirectional data transmission capability
• Integrated magnetic coupling for galvanic isolation
• Supports 3 V and 5 V logic level translation

Applications

• Industrial process control systems
• Medical equipment requiring safety isolation
• Power metering applications
• Inverters and motor drives

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the ARQZ designation corresponds to the commercial temperature grade and QSOP package variant. Ensure compatibility with existing board layouts designed for 20-lead SSOP/QSOP footprints. Cross-reference datasheet revisions to confirm pinout consistency with previous iterations.

Selection Notes

Select this component when six isolated channels are required in a single package. The 1 Mbps data rate suits moderate-speed interfaces like SPI or UART. Consider the 1000 Vrms isolation rating for basic insulation requirements. Evaluate the 20-lead QSOP footprint against available PCB space constraints compared to smaller packages.

Part Context

This part belongs to the ADUM7640 series of general-purpose digital isolators. It shares the core iCoupler architecture with variants offering different channel counts or unidirectional configurations. The ARQZ suffix specifies the commercial temperature range and specific package style, distinguishing it from automotive or wider temperature grade alternatives.

Replacement Considerations

Direct substitutes include other ADUM7640 variants with matching channel counts and isolation ratings. Verify that replacement parts maintain the same 1 Mbps speed class and 1000 Vrms isolation specification. Check for identical pinouts to ensure drop-in compatibility without schematic modifications.