GX76473-DNT

Overview

The GX76473-DNT is a quad-channel linear driver chip designed for high-performance optical integrated transmitter small form factor (SFF) modules used in metro and long-haul applications. It integrates four driver lanes with SPI circuitry for DC controls on a single die. Each channel features a 100Ω differential AC-coupled input and a 55Ω differential DC-coupled output, providing a linear output voltage of 2.8Vppd suitable for silicon photonics modulators and multi-level modulations.

Feature Summary

• Integrates four independent linear driver channels with dedicated SPI control circuitry on a single die
• Provides differential AC-coupled inputs and differential DC-coupled outputs for signal integrity
• Supports multi-level modulation schemes required for advanced optical transmission systems

Applications

• 400G/600G optical integrated transmitter SFF modules
• Metro network optical transmission systems
• Long-haul optical communication links

Procurement Notes

Verify the exact part number suffix against official Renesas documentation to confirm pinout and electrical specifications. Confirm availability status as distribution channels may list limited stock or end-of-life notifications. Ensure compatibility with existing PCB layouts and thermal management requirements before procurement.

Selection Notes

Select this component when designing optical transceivers requiring low-power, high-speed linear driving capabilities. The integrated SPI interface simplifies system control compared to discrete solutions. Consider the specific output voltage swing and impedance matching requirements of the target silicon photonics modulator during the design phase.

Part Context

This device belongs to Renesas' portfolio of optical modulator drivers, specifically engineered for next-generation data center interconnects and telecommunications infrastructure. It complements other variants in the series that offer different output configurations to suit various modulator types and system architectures.

Replacement Considerations

Consult official substitution lists for verified alternatives. Generic equivalents are not recommended due to strict performance tolerances required for optical modulation.