ADUM4470CRIZ-RL

Overview

The ADUM4470CRIZ-RL is a quad-channel digital isolator from Analog Devices Inc., utilizing iCoupler magnetic coupling technology. It features an integrated IsoPower isolated DC-to-DC converter, eliminating the need for external isolation components. The device supports a data rate of 25 Mb/s with a maximum propagation delay of 60 ns and offers a common-mode transient immunity of 25 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and provides a 5000 Vrms isolation rating. The component is housed in a 20-SOIC package and functions reliably across an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates a regulated isolated DC-to-DC power supply to simplify system design by removing external isolation barriers.
• Employs iCoupler magnetic coupling technology to provide high-speed digital signal transmission with robust noise immunity.
• Features unidirectional channel configuration suitable for PWM control and transformer driver applications.

Applications

• Pulse Width Modulation (PWM) controllers
• Transformer drivers
• Industrial automation systems requiring galvanic isolation

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging when ordering. Confirm that the CRIZ variant meets the required industrial temperature specifications (-40°C to +105°C). Ensure compatibility with the 20-SOIC footprint during PCB layout. Check current availability status as distribution may be limited or subject to factory order constraints.

Selection Notes

Select this component for applications requiring four isolated channels with integrated power delivery. Compare against other ADuM447x variants based on required data rates; the ADUM4470 supports 25 Mbps, whereas other family members may offer lower speeds. Ensure the 5000 Vrms isolation rating aligns with safety standards for the target application environment.

Part Context

This part belongs to the ADuM447x series of quad-channel digital isolators. The series shares the IsoPower architecture but varies in data rate and channel directionality. The ADUM4470 specifically targets high-speed unidirectional applications, distinguishing it from bidirectional or lower-speed counterparts within the same product family.

Replacement Considerations

The ADUM4470CRIZ is listed as a parameter-equivalent alternative to the ADUM4470CRIZ-RL. Verify pinout and electrical characteristics before substitution to ensure functional compatibility in existing designs.