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技术资料 DDR4标准 JESD79_4

1. Scope ......................................................................................................................................................................... 12. DDR4 SDRAM Package Pinout and Addressing ............................................................................ ...
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技术资料 电流检测电路中运算放大器与ADC的设计

电学中的测量技术涉及范围非常广,电流测量在电学计量中占有非常重要的位置。如何精确地进行电流测量是精密测量的一大难题。传统的电流检测电路多采用运算放大芯片与片外电流检测电路相结合的方式,电路集成度很低,需要较多的接口和资源才能完成对电路的检测。本文把所有电路部分都集成在一块芯片上,包括检测电阻,运算放大器 ...
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技术资料 IGBT图解

le flows through MOS channel while Ih flows across PNP transistor Ih= a/(1-a) le, IE-le+lh=1/(1-a)' le Since IGBT has a long base PNP, a is mainly determined by ar si0 2ar= 1/cosh(1/La), La: ambipolar diff length a-0.5 (typical value)p MOSFET channel current (saturation), le=U"Cox"W(2"Lch)"(Vc-V ...
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技术资料 wireshark抓包分析TCP和UDP

1,使用wireshark获取完整的UDP报文打开wireshark,设置监听网卡后,使用google chrome浏览器访问我腾讯微博的i http://p.t.qq.com/welcomeback.php?lv=1#!/ist/qqfriends/5/?pgv_ref-im.perinfo.pe rinfo.icon?ptlang-2052&pgv-ref-im.perinfo.perinfo.icon,抓得的UDP报文如图1所示。分析以上的报文内容,UDP作为一种 ...
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技术资料 VITA46-48-42 技术资料

VITA 46 Highlights Retain standard 6U and 3U form-factors Height, depth, pitch, front panel arrangements, conduction-cooled interfaces, etc.Support standard-length PMC and XMC modules· Support high-speed serial fabric on the backplane Tyco MultiGig RT2,7-row connector· Support VME and PCI int ...
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