GX76470-DNT

Overview

The GX76470-DNT is a quad-channel linear driver chip designed for high-performance optical communication applications. It supports data rates up to 64Gbps per channel, making it suitable for 400G and 600G DP-mQAM systems. The device features four differential outputs with a typical linear output voltage of 2.8Vppd. Each channel includes a 100Ω AC-coupled differential input and a 55Ω DC-coupled differential output. The component integrates SPI circuitry for digital control on a single die.

Feature Summary

• Integrates four independent linear driver channels with SPI-based digital control interface
• Provides differential AC-coupled inputs and DC-coupled outputs optimized for InP modulators
• Supports advanced multi-level modulation formats including 16QAM and 64QAM
• Features ultra-low inter-channel cross-talk and adjustable peaking functionality

Applications

• 400ZR optical modules for DCI links
• 400G/600G advanced multi-level QAM modulation systems
• High bandwidth small form factor optical integrated modules

Procurement Notes

Verify the specific suffix DNT against official Renesas documentation to confirm package type and moisture sensitivity level. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.

Selection Notes

Select this component for metro and long-haul coherent optical transceivers requiring low power consumption. Compare with the GX76471 if wafer-level packaging is preferred over tray packaging. Verify that the 2.8Vppd output swing matches the drive requirements of the target Indium Phosphide modulator.

Part Context

This part belongs to the GX76470 series of optical modulator drivers from Renesas Electronics. It is engineered specifically for integration into small form factor optical transceivers used in modern telecommunications infrastructure. The series addresses the growing demand for higher baud rate transmission in data center interconnects.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate the GX76471 for functional equivalence, noting potential differences in packaging configuration such as wafer versus tray format.