ADUM5211ARSZ

Overview

The ADUM5211ARSZ is a dual-channel digital isolator from Analog Devices, featuring an integrated isoPower isolated DC-to-DC converter. It provides bidirectional data isolation with a maximum data rate of 100 Mb/s and supports RS-232 protocols. The device offers 2500 Vrms insulation voltage via magnetic coupling technology. It operates within a supply voltage range of 3.135 V to 5.5 V, drawing typical quiescent currents of 2.1 mA and 2.3 mA on primary and secondary sides respectively. Propagation delay is specified at 15 ns. The component functions reliably across an operating temperature range of -40°C to +105°C and is housed in a 20-pin SSOP package.

Feature Summary

• Integrates an isolated DC-to-DC converter for power delivery across the isolation barrier
• Provides high-speed bidirectional data transmission with low propagation delay
• Utilizes magnetic coupling technology for robust signal isolation in noisy environments

Applications

• Isolated RS-232 transceivers
• Industrial communication interfaces requiring galvanic isolation
• Medical equipment signal conditioning
• Automotive electronic control units

Procurement Notes

Verify current availability status as distribution channels may report limited stock or discontinuation. Confirm that the SSOP-20 package matches your PCB footprint requirements. Ensure the bidirectional channel configuration aligns with your circuit design needs. Check for specific ordering suffixes if reel packaging is required instead of tube. Validate compliance documentation against regional regulatory standards before finalizing procurement.

Selection Notes

Select this component when both data isolation and isolated power generation are required in a single package. The integrated DC/DC converter eliminates the need for external isolated power supplies, reducing board space. Choose the ADUM5211 over unidirectional variants like the ADUM5210 if bidirectional communication is necessary. Consider the thermal performance within the -40°C to +105°C range for harsh industrial environments.

Part Context

This part belongs to the ADuM521x family of dual-channel digital isolators with isoPower. It shares architectural similarities with the ADUM5210 and ADUM5212 but differs in channel directionality and power output capabilities. The series is designed to replace traditional optocouplers and transformer-based solutions in modern interface applications.

Replacement Considerations

Public confirmed substitute part numbers: ADUM5210ARSZ (unidirectional variant), ADUM5212ARSZ (dual-directional variant). Verify pin compatibility and power output specifications when substituting.