ADN4656BRSZ

Overview

The ADN4656BRSZ is a dual-channel LVDS digital isolator utilizing iCoupler magnetic coupling technology. It supports data rates up to 1.1Gbps with a common mode transient immunity of 25kV/µs and isolation voltage of 3750Vrms. The device operates on a single supply voltage range of 2.375V to 2.625V. It features unidirectional channels with one input and one output per channel, housed in a 20-SSOP package. Propagation delays are typically 4.5ns, with rise and fall times of 0.35ns.

Feature Summary

• Integrates iCoupler magnetic coupling technology for galvanic isolation without external transformers.
• Supports high-speed LVDS signaling compliant with TIA/EIA-644-A standards.
• Provides high common mode transient immunity for reliable signal transmission in noisy environments.

Applications

• High-speed serial communication interfaces requiring galvanic isolation
• LVDS buffer applications in industrial systems
• Data acquisition systems with noise-sensitive analog front ends

Procurement Notes

Verify the specific suffix (R or RL) to confirm packaging type, as tube and reel variants exist within the same functional family. Confirm RoHS compliance status directly from the manufacturer datasheet, as historical records may vary. Ensure the operating temperature range meets system requirements, as industrial grades are specified. Cross-reference the 20-SSOP footprint dimensions during PCB layout to ensure mechanical compatibility.

Selection Notes

Select this component when low jitter LVDS isolation is required at gigabit speeds. The fixed 2.375V to 2.625V supply range necessitates careful power rail design compared to wider voltage options. Consider the 20-SSOP package size constraints against available board space. Evaluate the unidirectional channel configuration against bidirectional needs, as other models in the series may offer different directionality.

Part Context

This part belongs to the ADN4654/ADN4655/ADN4656 series of signal-isolated LVDS buffers. These devices are designed to replace traditional optocouplers and transformer-based isolators in high-speed digital links. The series leverages silicon dioxide insulation layers for enhanced reliability and consistent performance across temperature variations.

Replacement Considerations

Direct substitutes include ADN4654 and ADN4655 variants within the same series, which share similar iCoupler technology but may differ in channel count or specific electrical characteristics. Verify pinout compatibility before substitution.