ADUM3211CRZ-RL7

Overview

The ADUM3211CRZ-RL7 is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features two independent unidirectional channels with a data rate of 10 Mb/s and an insulation voltage of 2500 Vrms. The device operates within a supply voltage range of 3 V to 5.5 V, drawing a typical operating current of 6.4 mA. Key electrical parameters include a propagation delay of 50 ns and rise/fall times of approximately 3 ns. It is housed in an SOIC-8 surface-mount package and supports an industrial temperature range from -40°C to +105°C.

Feature Summary

• Provides galvanic isolation between circuits using on-chip transformer technology instead of optical components.
• Enables bidirectional signal transmission across the isolation barrier with low power consumption.
• Supports voltage translation functionality between different logic levels on either side of the barrier.

Applications

• Industrial communication interfaces such as RS-485 and CAN bus systems
• Medical equipment requiring high-reliability isolation for patient safety
• Power metering applications involving isolated signal transmission

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when ordering. Confirm the CRZ variant meets the required commercial temperature grade if applicable, though this part specifies industrial range. Ensure compatibility with SOIC-8 footprint requirements during PCB layout. Check for any recent product change notices regarding assembly sites or materials that may affect long-term availability.

Selection Notes

Select this component when a balance between moderate data speed and low power consumption is required. It serves as a direct replacement for optocouplers in designs needing improved reliability and smaller form factors. Consider the 10 Mb/s limit against higher-speed alternatives like the ADUM3201 if faster throughput is necessary. Evaluate the 2500 Vrms isolation rating against system safety standards.

Part Context

This part belongs to the ADuM321x family of dual-channel digital isolators. It shares the same SOIC-8 package and core iCoupler architecture with other variants in the series, differing primarily in data rate specifications and temperature grades. The family addresses the limitations of traditional optocouplers by offering better performance consistency and lower power usage.

Replacement Considerations

The ADUM3210ARZ-RL7 offers similar isolation but at a lower 1 Mb/s data rate. For higher speed requirements, the ADUM3201CRZ-RL7 provides 25 Mb/s capability. Verify pinout compatibility and thermal characteristics when substituting these related parts.