半导体技术快速发展，双倍数据速率同步动态随机存取存储器（Double Data Rata Synchronous Dynamic Random Access Memory, DDR SDRAM）的信号完整性问题已成为设计难点。文中提出了一种基于 ANSYS 软件和 IBIS 5.0 模型的 DDR4 SDRAM 信号完整性仿真方法。利用 IBIS 5.0 模型中增加的 ...

实时处理，结合大带宽数据的快速压缩和存储，是下一代高吞吐量卫星服务所必需的。问题是如何找到一款合适的有足够容量、速度和可靠性的宇航级大容量存储器。 为了发掘宇航市场的潜力，卫星运营商正通过提供增值服务，如超高分辨率成像、流媒体 ...

为了发掘宇航市场的潜力，卫星运营商正通过提供增值服务，如超高分辨率成像、流媒体视频直播和星上人工智能，提升星上处理的能力以减少下行链路的需求。从2019年到2024年，高吞吐量载荷的市场需求预计增长12倍，带宽增加至26500 Gbps。上述的所有应用都和 ...

To exploit lucrative market opportunities, satellite operators are trying to differentiate by offering added-value services like ultra-high-resolution imagery, live streaming video, and on-board AI to ...

本文讨论了基于 ANSYS 软件和 IBIS 5.0 模型的 DDR4 SDRAM 信号完整性仿真方法。利用IBIS 5.0 模型中增加的复合电流、同步开关输出电流等数据，对 DDR4 SDRAM 高速电路板的信号完整性进行准确的仿真分析。高速数据信号在经过印制板走线和器件封装后，信号摆幅和眼图都有明显恶化；在仿真电路的电源处 ...

“（之前）要是囤货了，我就发财了。”深圳华强北一名销售内存条的商家说，在近一个月时间里，用DDR4颗粒制成的内存条价格涨了近一倍，市场上有不少人提前得到原厂停产的消息，于是提前囤货。 DDR4是第四代双倍数据速率SDRAM。DRAM则是动态随机存取存储器 ...

Previously I introduced DDR4 for space applications (see “Fast DDR4 SDRAM to enable the new space age”) offering 4 GB of volatile storage at a clock frequency up to 1.2 GHz and a data rate of 2.4 GT/s ...

One of the problems with being engaged in our hobby or profession is that people assume if you can build a computer out of chips, you must know all the details of their latest laptop computer. Most of ...

JEDEC, the controlling body of the RAM standard, has published details about the DDR5 SDRAM spec to address the demand for ever-faster RAM. The new DDR5 spec is designed to enable scaling memory ...

Most computer technologies only last a short time before they are replaced by something new, but DDR RAM is one of the few that tends to last a while before being replaced. The original DDR SDRAM was ...