GN3257
Semtech 的 GN3257 ROSA 是一款完全集成的器件，其设计特性可确保出色的射频稳定性和高增益。GN3257 在低 OSNR 环境中具有出色的性能以及低功耗。它采用自动增益控制 (AGC) 来最大化保持线性的动态范围。这使应力和无应力数据实现了最先进的灵敏度，并能够在消光比从无限大到 3dB 的情况下保持出色的性能。
功能
- 线性动态范围设计，可实现最佳 OSNR 性能
- Low noise
- Single +3.3V power supply
- 功耗：198 mW（典型值）
- 一体式 PIN 型光电二极管
- 平均功率灵敏度 (BER = 1E-12)：-19dBm 典型值
- 光学过载平均值：+2 dBm
- Optical Return Loss > 27dB
- 光波长范围：1260nm 至 1620nm
- 提供与 MSA 兼容的柔性电路
- NRZ 速率为 9.95 Gb/s 至 11.3 Gb/s
- OE 带宽的最小频率：9 GHz（典型值）
- 基于 ITU/IEEE 的传输系统、测试设备和模块
- 10 Gigabit Ethernet
- 低 OSNR DWDM
- OC-192 fibre optic modules and line termination
- Serial data systems up to 11.3Gbps
- 长距离 WDM 应用，满足 OTU2、OTU2e 和 OTUFlex 的要求。
应用
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资源
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From smartphones and laptops, to ATMs and online shopping, data is constantly in flight. As consumer technology and industry innovations advance, global data creation is projected to grow to 175 zettabytes (ZB) by 2025. Nearly 53ZB of that data will be consumed in real time—the data equivalent of streaming 583 billion 4K videos at once—which will strain current network infrastructure.
Semtech’s Tri-Edge™ GN2255 is the industry’s first analog IC solution enabling ultra-low latency, less than 1.5W module power, and performance for up to 10km reach for 50Gbps PAM4 SFP56 optical modules. Based on the proven Tri-Edge CDR platform qualified in data center applications, the new solution delivers the cost effectiveness, small footprint, low power, ultra-low latency, and performance demanded by 5G front haul applications. The new Tri-Edge GN2255 enables 50Gbps PAM4 links that will double the bandwidth of currently deployed 25Gbps NRZ front haul links. Semtech’s introduction of the Tri-Edge 5G wireless IC will help support new 5G applications, including edge computing, enhanced mobile broadband and device streaming, and fixed wireless access (i.e., home Internet). Learn more about the product announcement here.
今年早些时候，评估工程 (EE) 与 Semtech 信号完整性产品事业部高级营销经理 Raza Khan 进行了交谈，讨论了行业趋势和新 Tri-Edge 5G 无线产品。
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在 2018 年进行了大量演示和 alpha 模块测试之后，双密度版本的四通道小型可插拔 (QFSP) 多源协议 (MSA) 模块标准有望成为新线卡的规则。QSFP-DD 热潮的隐含意义不是模块本身的物理特性，而是转向先进信令方法的趋势。十年前，QSFP28 的问世预示着使用 NRZ 信令的 25Gbps 电通道即将占据主导地位。如今，QSFP-DD 及其更庞大的表亲 —— 八进制 SFP 或 OSFP ，都使用 PAM4 信令。其用得最多的是 50Gbps 通道。但 QSFP-DD 足够灵活，可以在各种实施中使用八通道接口：25G x 8 用于 200Gbit 以太网，50G x 8 用于 400Gbit 以太网，可能还有一些早期的 100G x 8 用于预标准 800Gbit 以太网。
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Slow but steady advances were made in 2018 in on-board optical links for chip-to-chip and chip-to-module interfaces. The integrated-optics revolution, anticipated three years ago when the Consortium for On-Board Optics (COBO), of which Semtech is an associate member, was launched, has been replaced by a realization that only slow migration from traditional pluggable modules will serve the data center, whether within a single line card or server blade, or between cards and racks. Even as recent as a year ago, COBO members began rethinking and changing their tune to stress coexistence of pluggable MSA modules and the embedded on-board modules chosen by COBO as a de facto standard.
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