ADUM1100URZ

Overview

The ADUM1100URZ is a single-channel digital isolator utilizing iCoupler technology, which integrates high-speed CMOS logic with monolithic air-core transformer coupling. It provides electrical isolation for unidirectional data transmission at speeds up to 100 Mb/s. The device operates within a supply voltage range of 3 V to 5.5 V and draws a typical quiescent current of 800 µA. Key electrical specifications include an insulation voltage of 2500 Vrms, a propagation delay of 18 ns, and a common-mode transient immunity of 25 kV/µs. It supports pulse widths down to 10 ns and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Integrates high-speed CMOS technology with monolithic air-core transformer coupling for robust signal isolation.
• Provides unidirectional data transmission capability suitable for general-purpose digital isolation applications.
• Features high common-mode transient immunity to maintain signal integrity in noisy environments.

Applications

• General-purpose digital isolation in industrial control systems
• Isolating communication interfaces such as UART or SPI
• Protecting sensitive circuitry in medical equipment

Procurement Notes

Verify the specific suffix (e.g., URZ vs. URZ-RL7) to confirm the packaging format, as tube and reel variants exist. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the required operating temperature range and channel configuration for the target design.

Selection Notes

Select this component when a single-channel, unidirectional isolator is required for signals up to 100 Mbps. Consider the SOIC-8 package dimensions for PCB layout constraints. Evaluate the 2500 Vrms isolation rating against system safety requirements. Compare power consumption and propagation delay against other channels if bidirectional or multi-channel isolation is needed.

Part Context

This part belongs to the ADuM1100 series of digital isolators manufactured by Analog Devices. The series leverages proprietary iCoupler technology to replace traditional magnetic or optical isolation components. The ADUM1100 specifically addresses applications requiring simple, low-power, single-direction signal transfer with high reliability and small form factor.

Replacement Considerations

Check for direct pin-compatible alternatives within the ADuM family, such as the ADUM1101 for bidirectional needs. Verify that any substitute maintains the same 8-SOIC footprint and meets the 2500 Vrms isolation requirement. Ensure the replacement supports the required 100 Mb/s data rate and 3 V to 5.5 V supply range.