GN1068
GN1068 是一款具备扩展功能的跨阻放大器芯片。此芯片可由用户配置所需的比特率，支持的标称速率为光纤通道 14.025Gbps 和 8.5/4.25Gbps 速率，以及 10.3125Gbps 的万兆位以太网速率。通过速率可选，能优化以所选速率运行的噪声性能。
GN1068 的设计确保了对电光增益的良好控制，以在用户封装中实现最大的射频 (RF) 稳定性。GN1068 用于为光电二极管和 TIA 提供仔细的射频 (RF) 匹配，以优化性能。
功能
- On-chip decoupling
- 专为 0.2 pF PIN 型二极管设计
- 功耗：94mW（典型值）
- 跨阻增益典型值：6.75 kΩ
- 速率可选的带宽：16G 模式为 12GHz，8G 模式为 8GHz
- 低频截止频率 (-3 dB)：20kHz
- 可在 OC-192 / STM-64 上运行，NRZ 速率高达 14.5 Gbps
- Received Signal Strength Indicator (RSSI) current output operates from dark current to overload
- 工作结温范围：-40 ℃ 至 125 ℃
- 可与 TO-can 和其他封装形式一起使用
- 4/8 以及 16 Gbps 光纤通道
- 10 Gigabit Ethernet
- 高达 14.5 Gbps 的串行数据系统
应用
Pb(Lead)-Free/RoHS-Green Info
（-40°C 至 +85°C / 4000 循环）
（50°C，4000 小时）
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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.
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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years ago when the Consortium for On-Board Optics (COBO), of which Semtech is an associate member, was launched, has been replaced by a realization that only slow migration from traditional pluggable modules will serve the data center, whether within a single line card or server blade, or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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