ADUM3480BRSZ

Overview

The ADUM3480BRSZ is a quad-channel digital isolator utilizing Analog Devices iCoupler technology, which integrates high-speed CMOS circuitry with monolithic air-core transformer coils. This component provides electrical isolation between two sides of a circuit while transmitting digital signals. It features a 3750 Vrms isolation voltage rating and supports data rates up to 25 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V and offers low propagation delay of 33 ns. It is housed in a 20-lead SSOP package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates four independent bidirectional channels using iCoupler magnetic coupling technology for robust signal transmission.
• Provides high common-mode transient immunity exceeding 25 kV/µs to maintain signal integrity in noisy environments.
• Supports flexible logic level translation between 1.8 V and 5 V domains on both input and output sides.
• Delivers low dynamic power consumption and low propagation delay for efficient high-speed data isolation.

Applications

• Isolation of SPI interfaces and data converters in industrial systems
• General-purpose multi-channel isolation in measurement equipment
• Industrial fieldbus position sensing applications

Procurement Notes

Verify the specific suffix (BRSZ) to confirm the SSOP-20 package and reel/cut-tape availability status. Confirm RoHS compliance details as required by your manufacturing standards. Ensure the supplier provides valid traceability documentation for this Analog Devices component. Check for any regional distribution restrictions or limited stock notices before finalizing orders.

Selection Notes

Select this part when four isolated channels are required with high-speed data rates up to 25 Mb/s. It is suitable for applications demanding high common-mode transient immunity and wide operating temperature ranges. Consider the SSOP-20 footprint constraints during PCB layout. Compare against ADUM3481 or ADUM3482 if lower data rates or different channel configurations better fit the system requirements.

Part Context

This component belongs to the ADuM348x series of quad-channel digital isolators from Analog Devices. The series leverages iCoupler technology to replace traditional optocouplers, offering superior performance in speed, power, and size. The ADUM3480 variant specifically targets high-speed applications requiring four isolated channels within a compact surface-mount package.

FAQ

What is the maximum data rate supported by the ADUM3480BRSZ?

The ADUM3480BRSZ supports a maximum data rate of 25 Mb/s per channel.

Does the ADUM3480BRSZ support bidirectional communication?

Yes, the ADUM3480BRSZ provides four independent bidirectional channels for signal transmission.

What is the common-mode transient immunity of this isolator?

The device offers a typical common-mode transient immunity of greater than 25 kV/µs.