MENTOR_EE2005_SP3_官方教材 準(zhǔn)備開(kāi)始使用Expedition Enterprise..........................................................................5 1.1 練習(xí)數(shù)據(jù)準(zhǔn)備.........................................................................................................5 1.2 EE用戶(hù)界面介紹....................................................................................................5 2. 原理圖輸入工具DxDesigner的基本操作和配置.......................................................7 2.1 選擇和激活練習(xí)項(xiàng)目.............................................................................................7 2.2 打開(kāi)原理圖.............................................................................................................8 2.3 項(xiàng)目配置.................................................................................................................8 2.4 基本操作...............................................................................................................11 3. 開(kāi)始原理圖設(shè)計(jì).........................................................................................................14 3.1 新建原理圖頁(yè).......................................................................................................14 3.2 放置器件...............................................................................................................14 3.3 放置Net以及BUS.................................................................................................17 3.4 使用CSE（Connectivity Spreadsheet Editor） .........................................18 3.5 Expedition Cell Preview ..................................................................................21 3.6 查找網(wǎng)絡(luò)和器件...................................................................................................22 4. 把原理圖數(shù)據(jù)轉(zhuǎn)換為PCB數(shù)據(jù)以及數(shù)據(jù)更新.........................................................23 4.1 查找原理圖中的錯(cuò)誤...........................................................................................23 4.2 器件Package錯(cuò)誤，建庫(kù)錯(cuò)誤...........................................................................25 4.3 把CDB數(shù)據(jù)Forward到Expedition中...............................................................26 4.4 ECO－工程更改...................................................................................................28 5. Expedition用戶(hù)界面和常用操作介紹.......................................................................30 5.1 Expedition PCB用戶(hù)界面.................................................................................30 5.2 常用操作...............................................................................................................34 6. 設(shè)計(jì)規(guī)則輸入及管理－CES......................................................................................
標(biāo)簽： MENTOR_EE 2005 SP 教材
上傳時(shí)間： 2013-06-04
上傳用戶(hù)：ccsp11
本文介紹了Flat— Cell結(jié)構(gòu)和采用Flat— Cell技術(shù)的ROM設(shè)計(jì)方法。包括Flat—Cell的工藝技術(shù)、Flat—Cell基本電路結(jié)構(gòu)和ROM 放大器電路。
標(biāo)簽： FlatP_Cell ROM 分
上傳時(shí)間： 2013-11-15
上傳用戶(hù)：84425894
Sensors for pressure, load, temperature, acceleration andmany other physical quantities often take the form of aWheatstone bridge. These sensors can be extremely linearand stable over time and temperature. However, mostthings in nature are only linear if you don’t bend them toomuch. In the case of a load Cell, Hooke’s law states that thestrain in a material is proportional to the applied stress—as long as the stress is nowhere near the material’s yieldpoint (the “point of no return” where the material ispermanently deformed).
標(biāo)簽： Delta Sigma ADC 測(cè)量技術(shù)
上傳時(shí)間： 2013-11-13
上傳用戶(hù)：墻角有棵樹(shù)
Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for battery operation. In some circumstances,due to space, power or reliability considerations,it is preferable to operate the circuitry from a single 1.5VCell. Unfortunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparators arethe only IC gain blocks fully specifi ed for 1.5V operation.Further complications are presented by the 600mV dropof silicon transistors and diodes. This limitation consumesa substantial portion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfor 1.5V operation must function at end-of-life batteryvoltage, typically 1.3V. (See Box Section, “Componentsfor 1.5V Operation.”)
標(biāo)簽： Circuitry Operation Single 1017
上傳時(shí)間： 2013-12-20
上傳用戶(hù)：Wwill
精確度0.05%滿(mǎn)刻度±1位數(shù)（Accuracy 0.05%F.S.±1digit） 可測(cè)量交直流電流/交直流電壓/電位計(jì)/傳送器/Pt-100/荷重元/電阻等信號(hào)（Measuring DCA/DCV/ACA/ACV/Potentiometer/Transmitter/Pt-100/Load Cell/Resistor/etc……） 顯示范圍0-19999可任意規(guī)劃（Programmable rate 0 to 1999 digit） 小數(shù)點(diǎn)可任意規(guī)劃（Decimal point can be modified） 尺寸小，穩(wěn)定性高（Dimension small & High stability）
上傳時(shí)間： 2014-01-25
上傳用戶(hù)：RQB123
The CN3052A is a complete constant-current /constant voltage linear charger for single Cell Li-ion and Li Polymer rechargeable batteries. The device contains an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode.
上傳時(shí)間： 2013-11-10
上傳用戶(hù)：子虛烏有
Abstract: It is critically important that lithium-ion battery stacks have a good battery-management system for monitoring many Cellvoltages and Cell temperatures. Without that monitoring, thermal runaway can lead to a battery explosion. This design idea presentsa low-power circuit that measures the temperature of up to 12 thermistors. It powers and configures the multiplexers, and also putsthe muxes into shutdown to save power when not measuring temperatures.
標(biāo)簽： 電池管理系統(tǒng) 多點(diǎn) 溫度測(cè)量 方案
上傳時(shí)間： 2013-10-29
上傳用戶(hù)：xwd2010
Piezoelectric motors are used in digital cameras for autofocus,zooming and optical image stabilization. Theyare relatively small, lightweight and effi cient, but theyalso require a complicated driving scheme. Traditionally,this challenge has been met with the use ofseparatecircuits, including a step-up converter and an oversizedgeneric full-bridge drive IC. The resulting high componentcount and large board space are especially problematicin the design of cameras for ever shrinking Cell phones.The LT®3572 solves these problems by combining astep-up regulator and a dual full-bridge driver in a 4mm× 4mm QFN package. Figure 1 shows a typical LT3572Piezo motor drive circuit. A step-up converter is usedto generate 30V from a low voltage power source suchas a Li-Ion battery or any input power source within thepart’s wide input voltage range of 2.7V to 10V. The highoutput voltage of the step-up converter, adjustable upto 40V, is available for the drivers at the VOUT pin. Thedrivers operate in a full-bridge fashion, where the OUTAand OUTB pins are the same polarity as the PWMA andPWMB pins, respectively, and the OUTA and OUTB pinsare inverted from PWMA and PWMB, respectively. Thestep-up converter and both Piezo drivers have their ownshutdown control. Figure 2 shows a typical layout
上傳時(shí)間： 2013-11-18
上傳用戶(hù)：hulee
Advances in low power electronics now allow placementof battery-powered sensors and other devices in locationsfar from the power grid. Ideally, for true grid independence,the batteries should not need replacement, but instead berecharged using locally available renewable energy, suchas solar power. This Design Note shows how to producea compact battery charger that operates from a small2-Cell solar panel. A unique feature of this design is thatthe DC/DC converter uses power point control to extractmaximum power from the solar panel.
標(biāo)簽： 太陽(yáng)能電池板 電池充電 技術(shù)手冊(cè)
上傳時(shí)間： 2014-01-20
上傳用戶(hù)：wettetw
The design of battery-powered equipment can often bequite challenging. Since few ICs can operate directly fromthe end-of-life voltage from a 2-Cell battery (about 1.8V),most systems require a DC/DCconverter. The systemdesigner often has a limited area in which to place the DC/DC converter; associated inductors and capacitors must be
上傳時(shí)間： 2013-11-23
上傳用戶(hù)：wys0120
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