Overview
Description
The GX79474 is a low-power, high-performance, quad-channel linear driver chip designed for 800Gbps and beyond optical integrated transmitter small form factor (SFF) modules for metro and long-haul applications.
The GX79474 integrates analog control and digital (through an SPI interface) control circuitry for precise, independent driving level control and monitoring. Each driver channel has a 100Ω differential AC-coupled input and 60Ω differential interface with an open-collector type output stage, suitable for InP-based and silicon photonics-based Mach-Zehnder modulators.
Features
- >70GHz 3dB E/O bandwidth
- >10dB dynamic range of gain control
- <2.0W (typical) power consumption for 2.0Vppd output voltage swing
- AC-coupled 100Ω differential input
- Open-collector configuration output stage that can drive DC-coupled 60Ω differential
- Ultra-low inter-channel crosstalk
- Up to 15dB of peaking to compensate for package and modulator losses
- Precise analog and digital monitoring and control of gain and output voltage swing
- <1MHz low-frequency cutoff
- Optical Internetworking Forum (OIF)-compliant serial peripheral interface (SPI) for programmability
Comparison
Applications
Applications
- 800G and beyond advanced multi-level QAM modulation systems
- High-bandwidth small form factor optical integrated modules
Documentation
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| Type | Title | Date |
| Datasheet - Short-form | PDF 118 KB | |
| Datasheet | PDF 398 KB | |
2 items
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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.
| WAFER | DICEW | E | WFP | 0 | Get Samples, |
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