模拟IC设计流程总结课件.ppt
,模拟C设计流程总结PM Group陈志军Best wishes微固学院功率集成技术实验室,微固学院功率集成技术实验室nalog w主要内容2绪论前端设计后端设计后端设计工具结论,微固学院功率集成技术实验室)楼模拟心与款字C的比较Analog circuitsDigital circuitsSignals are continuous inSignal are discontinuous inamplitude and can be continuous amplitude and time-binary tatessignals have two amplitude stDesigned at the circuit levelDesigned at the systems levelComponents must have aComponent have fixed valuescontinuum of valuesCustomizedStandardCAD tools are difficult to apply CAD tools have been extremelysuccessfulRequires precision modelingTiming models onlyPerformance optimizedProgrammable by sottwareIrregular blockRegular blocksDifficult to route automatically Easy to route automaticallyDynamic range limited by power Dynamic range unlimitedsupplies and noise(and linearity,微固学院功率集成技术实验室nalog w模拟C设计的特点Geometry is an important part of the designUsually implemented in a mixed analog-digital circuitAnalog is 20%and digital 80%of the chip areaAnalog requires 80%of the design time,微固学院功率集成技术实验室nalog w模拟C需要掌握的技能Requires an ability to grasp multiple concepts simultaneouslyRequires a wide range of skills(from system to technology)Be able to use simulation correctlySimulation“truths+Usage of a simulator)X(Common sense)=Constanto Simulators are only as good as the models and the knowledgeof those models by the designero Simulators are only good if you already know the answersDont use computer as a substitute for thinking,微固学院功率集成技术实验室nalog w模拟C的设计流程Conception of the ideaDctinition of the desigElectricalDesign comparisonImplementationspeeitieatielspecificatioPhysical definitionPhysicalDesiI Phy sical VerificatioParasitic ExtractionFabricationFabricationTesting and verificationProductDevelopmentProduc,微固学院功率集成技术实验室nalog w主要内容2绪论前端设计后端设计后端设计工具结论,微固学院功率集成技术实验室nalog w模拟|C的设计书籍书名CMOS Integrated Circuits因外电子与通信ALOG INTEGRATEDCIRCUIT DESIGN的分当被每AM模我可(第二版CIRSMOS OP-AMPS and ComparatoDesign for CMOS VLSI Systemsked-Signal Circuit Design英Analog Mos Integrated Circuits IlFundamentals of Power ElectronicsSwitching Power Supply DesignPower Electronics Circuits,Devices and ApplicEM4RT界14 Modern DC-to-DC Switchmode Power Converter CircuitsSeverns,Rudolf P.Bloom,Gordon,Ed.,微固学院功率集成技术实验室nalog w逆向设计正向设计逆向设计逆向设计:借鉴以前成功的经验周期短见效快正向设计:提供系统解决方案周期长系列性,微固学院功率集成技术实验室)逆向设计时的注意事项(-)多读SPEC,加深对芯片的理解查找是否有 Reliability Report,这对判断芯片的PN脚有帮助标注信号线最好由1-2人完成(3000个管子以上的版图除外),养成边标线边纪录的习惯提取版图是一个需要细心和耐心的过程。版图提取错误,会给随后的电路分析造成很大的麻烦和重复劳动,浪费时间,延缓进度按照版图的布局分块提取版图,注明晶体管的类型,遵循版图原状,不要合并晶体管提取版图时应先确定器件的类型,再从POLY层画出器件,然后再从 METAL层画出连线。由下至上,提高效率,
