GX79474-QUAL

Overview

The GX79474-QUAL is a qualified variant of the GX79474 four-channel optical modulator driver. It features differential outputs with a peak-to-peak voltage (Vppd) of 4 V, supporting data rates up to 128 GBaud per channel. Designed for advanced multi-level QAM modulation systems, it enables 800 Gbps and beyond optical modules. The device integrates linear drivers optimized for high-speed signal integrity in coherent optical communication applications.

Feature Summary

• Four independent linear driver channels supporting 128 GBaud operation
• Differential output architecture with 4 Vppd swing capability
• Optimized for advanced multi-level QAM modulation formats
• Designed for integration into 800G and higher speed optical transceivers

Applications

• 800G and beyond coherent optical module implementations
• Advanced multi-level QAM modulation systems
• High-speed optical interconnects requiring linear driver performance

Procurement Notes

Verify that the -QUAL suffix denotes specific qualification or reliability standards required by your design. Confirm compatibility with existing board layouts and thermal management schemes. Ensure supply chain stability as qualified variants may have different availability than standard production parts. Validate all electrical parameters against the official datasheet before finalizing procurement.

Selection Notes

Select this component when designing optical engines requiring four-channel linear drive with 4 Vppd differential outputs. It is suitable for applications demanding support for 128 GBaud signaling and complex modulation formats. Consider alternative models if single-ended outputs or lower channel counts are sufficient for the target application.

Part Context

The GX79474 belongs to Renesas' portfolio of optical modulator drivers targeting next-generation high-speed optical communications. It complements other variants like the GX79472, which offers single-ended outputs. This family addresses the growing demand for high-bandwidth coherent optical solutions in data center and telecommunications infrastructure.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other Renesas optical driver models based on channel count, output type, and data rate requirements before considering alternatives.