Overview
Description
The GX79472 is a low-power, high-performance, quad-channel linear driver chip that is designed for 800G and beyond optical integrated transmitter small form factor (SFF) modules for metro and long-haul applications.
The GX79472 integrates the quad lanes of the driver with SPI circuitry for DC controls on a single die. Each channel of the driver has a 100Ω differential AC-coupled input and a single-ended output with a back-terminated output stage. The output stage allows for an external AC-coupled interface with optical modulators having a wide characteristic impedance range from 30Ω to 50Ω. The linear output voltage of 2.0Vpps is suitable for the lithium niobate (LiNbO3) optical modulators with multi-level modulations.
Features
- Data rate up to 96Gbaud per channel for 800G and beyond DP-mQAM applications
- >70GHz E/O bandwidth
- >10dB dynamic range of gain control
- 3.8W (typical) at linear 2.0Vpps
- AC-coupled 100Ω differential input/30Ω - 50Ω single-ended output
- Ultra-low inter-channel crosstalk
- Peaking adjustment functionality
- Analog control for gain and output voltage setting, and analog monitor for peak detector and gain control monitor
- Optical Internetworking Forum (OIF)-compliant serial peripheral interface (SPI) digital interface integration
Comparison
Applications
- 800G and beyond advanced multi-level QAM modulation systems
- High-bandwidth small form factor optical integrated modules
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet - Short-form | PDF 146 KB | |
| Datasheet | PDF 475 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| WAFER | DICEW | E | WFP | 0 | Get Samples, |
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