ADN4655BRSZ

Overview

The ADN4655BRSZ is a dual-channel digital isolator utilizing iCoupler magnetic coupling technology. It features one transmitter and one receiver channel supporting LVDS signaling at data rates up to 1.25 Gb/s. The device provides 3750 Vrms isolation voltage with a common-mode transient immunity of 25 kV/µs. Operating on a single supply voltage between 2.375 V and 3.6 V, it draws 58 mA typical current. Key electrical parameters include a propagation delay of 4 ns and rise/fall times of 350 ps. It operates within a temperature range of -40°C to +125°C and is housed in a 20-lead SSOP package.

Feature Summary

• Integrates high-speed LVDS interface capabilities for gigabit data transmission across isolation barriers.
• Employs iCoupler magnetic coupling technology to provide robust galvanic isolation without optical components.
• Supports unidirectional signal flow with dedicated transmit and receive channels for asymmetric communication needs.

Applications

• High-speed serial communication interfaces requiring galvanic isolation
• Industrial automation systems with noisy electromagnetic environments
• Medical equipment requiring reinforced safety isolation

Procurement Notes

Verify the specific suffix BRSZ corresponds to the SSOP-20 package and tube packaging format. Confirm that the 3750 Vrms isolation rating meets your system's safety requirements, as other variants may offer higher ratings. Ensure compatibility with the 2.375 V to 3.6 V supply range and check for moisture sensitivity handling requirements during assembly.

Selection Notes

Select this component when a dual-channel isolator with asymmetric TX/RX configuration is required. It is suitable for applications needing LVDS signaling over magnetic isolation. Compare against the ADN4655BRWZ if a wider SOIC package or higher 5000 Vrms isolation is needed. Consider power consumption and thermal dissipation limits given the 58 mA operating current.

Part Context

This part belongs to the ADN465x series of low-voltage differential signaling (LVDS) gigabit isolators from Analog Devices. The series utilizes proprietary iCoupler technology to integrate transformer-based isolation into standard CMOS processes. This family addresses the need for high-speed data transfer in electrically noisy environments while maintaining compact form factors.

Replacement Considerations

ADN4655BRWZ offers similar functionality but in an SOIC-20 package with 5000 Vrms isolation. ADN4654BRSZ provides bidirectional channels instead of unidirectional. Verify pinout compatibility and isolation voltage ratings before substitution.