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    IBIS2֣Լ΄ԼIBISģ

    lrg2022-4-20 17:31    lߣeechina
    PI~ IBIS , ģ
    IBIS ModelingPart 2: Why and How to Create Your Own IBIS Model

    ߣ ADIaƷù̎  Rolynd AquinoADIϵyù̎ Francis Ian Calubag
    ADIaƷù̎  Janchris Espinoza

    ժҪ

    ṩPڄIBISģ͕rʹLTspice®fָwIBISAģIBISģC^߀ԔBLTspiceОIBISģ͜ʴ_ȡI-VV-TбºC_comp߀ṩԺͶFOMCIBISģ͵ԓðչʾ˞OADxxxxB־__lIBISģ͵^аmݔBCMOSӿڵĿIBISģڼ_ʼIBISģ



    ژκϵyrl]PIOӋˆTAҊ}MMrҳɱ߰޸҂ĿʼKһξͳɹڷֽٔӿڕrOӋεPCB߾ܕӰ̖|̖ԷIBISݔ/ݔ_ϢҎģÁʾĔֽӿ

    IBISϵµĵ1IBISһОģͨ^Աʽгc(I-V)늉crg(V-T)Ĕֽӿڵ늚IBISģ͑Mʴ_Ҳκνe`֮ʹÕrF}ھДֽӿڵÿԓṩõIBISģ@ӿ͑Ҫrֱӏ̵ľWdŒǿIBISģÑһ}ģ͵ĿOӋxõIJ]IBISģ͕raƷ_l

    IBISģṩÑҲԄIBISģĽBʹLTspiceSPICEģ̈́AIBISģʹIBISģփԣIBIS 4.0棩еҎBLTspiceO߀ҪBʹöԺͶƷ|򔵁CIBISģ

    ^ġIBISģ

    ˎ͑ʹLTspiceIBISģҪȶxһ~IBISģͲHȡQI/OģPI߀ȡQҪģĔ־_@ζҪŒҕIBISڰ汾Զx_ģҪMҪԼrģĔֽӿڵŒCζCMOS_ǿʹIBISģεĔIO֮һČԽB


    D1.3BCMOS_IBISģ

    1.Model_typeIBISģͽMR
    Model_type [b]C_comp [GND_ Clamp] [Power_ Clamp] [] []V-T [б]
    ݔ
    3B
    I/O

    D1@ʾ3BCMOS_IBISģ͵ĽY1IBISģеĽMPIȡQģ1RгIBISģ͵ĽMwModel_typeQ

    ð

    ڱ҂ʹһOADxxxxLTspiceģ́턓IBISģһʹ_Ćݔ͆ݔ־_õIBISģ͌Ѓɂݔ루DIN1ENһBݔ(DOUT1)

    һfIBISģ傀E
    u        Aģ
    u        SPICEģȡC_compV-IV-TMLTspice
    u        ʽIBISļ
    u        ʹIBISyԇzļ
    u        ^IBISģcSPICEģͬdlµķY

    IBISģṩ͔С󔵓ͨ^Դ늉ضȺ͹ˇ_麆ҊֻӑՓ͗l

    Ibischk Golden ParserϵпڙzIBISģǷIBISҎibischkɈļɏIBIS.ORGWM@ȡʹüibischkĵIBISģ;݋ܛ



    _ʼ֮ǰÑԓdĔփbSPICEģͺLTspiceļͨ^_߂Ĕֽӿڔͣݔ_©BȣMгʼu

    փ_Դ늉ض·(IC)b_ݔrҎļdlRLoad/CLoadԼݔĵƽݔ늉(VINL)͸ƽݔ늉(VINH)ADxxx SPICEģD1ʾָ˅ڱ2

    ͨ^ʹPIPֽӿڵϢRһIBISļPIIBISģ̖ĘR1ԔϢՈ醴˲փ


    D2.Adxxxx 3B־_SPICEģ

    2.ADxxxxփԅ
    փԅֵ
    VDD1.8 Vֵ
    ض25C
    VINL0.3 VDD
    VINH0.7 VDD
    ICb6_SOT-23
    CLoad15 pF

    cICbģPPI[Package]RLC--оƬPICP/_BϢɏ̎@ҲԲһIBISļ[Package]ֻҪԓõķbcuȫͬҁͬһ6_SOT-23bb3ʾ

    3.6_SOT-23b
    [b]
    ׃ֵСֵֵ
    R_pkg1.60E-01NANA
    L_pkg4.46E-09NANA
    C_pkg3.70E-13NANA

    _4ʾPI[Pin]_䌦ģQ[Pin]һ3иʽһ_̖ڶ_ģQЩbƵ_VCCGND@Щ_԰ģͷֽM@NrSPICEģ͛]нoPȲwܼԭDϢÞÿֽӿڄΪģIBISļģQPower͡GNDԴͽӵ_ǔֽӿں͡ՈBӡ_t顰NCoBՈעģQDž^ִСԺĽģ߀õowģQ

    4.ADxxxx_б
    [Pin]Signal_nameModel_name
    1
    VDDPower
    2
    DIN1cmos_di1
    3
    ENcmos_en
    4
    DOUT1cmos_out1
    5
    GNDGND
    6
    NCNC
    ADxxxxֵ5ʾ@ڽLTspicerdz߀Ҫ֪ΌDOUT1_OÞ迹裩ģʽ߉݋1߉݋0

    5.ADxxxxֵ
    ENDIN1DOUT1
    0
    0
    0
    1
    1
    00
    1
    11

    LTspiceOúͷ

    һfIBISģͨ^ǰᵽI-Vc늉V-T늉crg־_ОMIBISģrÿN͵ĔֽӿڶһMԼI-V/V-T1ʾ6Ԕг@Щע鿴ÿעЩӛ顰]Ĕʾ@ЩȱʧibischkyԇЌ`@ЩͨһQλڷ̖

    6.ݔ3BӿڵI-VV-T
    IBISPI
    ݔ3B
    V-I
    C_comp
    [Power_Clamp]
    ]]
    [GND_Clamp]
    ]]
    []
    []
    V-T []dVDD]
    dGND]
    [½]dVDD]
    dGND]
    [б]

    [Power_Clamp][GND_Clamp]


    D3.[Power_Clamp][GND_Clamp]PIֽYĸD

    [GND_Clamp][Power_Clamp]ͨ^ԱʽгI-V@ʾ־_o늷(ESD)О[Power_Clamp]ʾVDDʵESDwОӵλʾGNDʵESDwО

    LTspiceI-Vʹ.DC SPICE/ָMМyDOUT1ĽӵλÈD4ʾOMМyԓOʹmԴ늉ԓÞBģʽՈҊ5@Դ_ESDc·xVSWEEPGNDʵĒ늉ʹVSWEEP늉ӵ_ֻ@ʾGNDλESD

    IBISҎ늉܉⣨Ï-VDD2 VDDI-VǏĨC1.8 V+3.6 Vͨ^ֱӈд˲VDD늉_ԴλESD˱@NrڨC1.8 V+1.8 VȒVSWEEPʹƷ3.6 Vc˷mI-V

    ՈעI-Vֻ100cc^@ĿibischkyԇЕʾe`O.DCʹõĔcСڻ99@Ǟݼ{2 VDDƵһ~┵c

    MֱrпܳFdzķҪQ@}ʼĽO݉λ(-0.7 V)OÞVDD (+1.8 V)Ȼ󌢔ϨCVDD2 VDD I-VһNnjһСRsercVSWEEP“ƘO


    D4.ADxxxx DOUT1ӵλO

    Γ\аoLTspice_ʼ\зuDOUT1Ŀ˹cIx(U1OUT1)mȻļgǶȁI(VSWEEP)Ҳ_IBISģҪIx(U1OUT1)ϵO@Ǟ޶ȜpI(VSWEEP)MһʽʹmģYԓD5ʾɺȆΓYڱ攵ȻΓļ -> ıҪĿΓܜycȻΓOKD6ʾ


    D5.ӵλY


    D6.攵ı

    [Power_Clamp]ȡcӵλO˒늉VSWEEPVDDOúͽYD7ʾ


    D7.ADxxxx OUT1ԴλOúͽY

    [][]


    D8.I-VPIֽYĸD

    D8@ʾI-VPIֽYĸD[][]ʾ_ԪصОԈDʽʾMOSFETI-Vȡ[][]r˽ͨ^ֵٿ؏ݔ_ݔ̖dzҪȡ[][]Oc[GND_Clamp][Power_Clamp]DOUT1_ʹҲ̎ڸģʽ

    Ҫȡ[]DOUT1_OÞ߉݋0ݔ0 VOmԴ늉D9ʾEN_ʩ1.8 VĵЧ߉݋߉ʹDOUT1_DIN1_ʩ߉݋00 VDOUT1_OÞ߉݋0ݔͨ^ֵ5Mд_JYD10ʾ


    D9.ADxxxx OUT1O


    D10.ADxxxx OUT1D

    Ŵ[]MOSFETI-VD11ʾ


    D11.ADxxxx DOUT1DsҕD

    ڱrՈע[GND_Clamp][]ĿD12Ըõf@һcҪƳ[GND_Clamp]Mֻ[]攵cpȥ˺@һ[GND_Clamp][]ֱ늉_ʼ늉ͽY늉ͬ


    D12.攵ČH

    @ȡOD13ʾṩmԴ늉ԌDOUT1OÞ߉݋1 (1.8 V)@_Ԫ/_ȻVSWEEPҲڨC1.8 V+1.8 VȒVDD@NʽBVSWEEPԷֹÑʽԷIBISҎ


    D13.ADxxxx DOUT1OúͽY

    c[]һ[]Ǐ[Power_ Clamp][]óĽYÑҪı[]cpȥȥ[Power_Clamp]Mֱ腢ͬ@ѴеI-Vyʹֱͬ腢


    D14.Ա[]ČH

    [C_comp]

    [C_comp]PIִ_СͺսǵֵͬǾwܺƬcbݲͬԲÃɷNʽȡ[C_comp]_ɽ늉늕rʹ÷1еĹʽóֵҲʹ÷2еĹʽMӋ




    У
    u        ImIacyֵ̓
    u        FԴl
    u        VACԴķ

    ʹLTspiceMC_Compȡ

    D15ʾͨ^ṩ늉lʒȡ_ṩǽ늉ҪyČ̓ý늉늕r횷DĘOԜy_ݔֵyݔ_ݕrڈD15ʾĈDΨһҪĸľDZ회ԴBݔ_


    D15.ADxxxx C_compȡO

    늉ķֵֵͨOÞ1 VSPICEָMlʒʹ.ACLƲΕrĬJOÞԲģʽ@ʾλdB회OÞѿģʽܲ鿴ֵ@ӿֱʹþ_ݹʽM̎Ҫ鿴_ݲÑIΓδȻΓ߾x񱻜y_ΈDڌ@ʾɗl

    ʾyČ̓ʾy̓


    D16.D߾Ԓ

    ҪDOÏIJظĞѿIΓδȵySԴ_vSȌԒȻ󌢈DʾʽIJظĞѿ


    D17.DOÏIJظijɵѿ

    C_CompOõLTspiceָ

    LTspiceָO·Ĺģʽy׃^̅ӋC_compÁy_C_compֵLTspiceָ
    u        AC Lin 10 1k 10k·ĹģʽOÞ1 kHz10 kHzĽlʒ
    u        .Options meascplxfmt.measĬJYĞ鲨ο˹ػѿģʽ
    u        .Options measdgtO.measZЧλ
    u        .measZ䣺@ЩָÁҳ·ijЩֵ

    @ЩSPICEָԸÑҪ@ʾąM޸PLTspiceпʹõָԔfՈLTspice HelpyZĽYڹ > SPICEe`־в鿴


    D18.SPICEe`־еĜyZY

    SPICEe`־@ʾĽYõѿʽX˞;_ݵČY˞;_ݵ̓ڜy_ݕr̓Ǿ_IJC_compČHֵLjD18ͻ@ʾֵ

    [][½]

    ʲô½

    [][½]PI~ģMݔ_ГQОݔģhĂV-T½Ե؞ʼd½VDDʼd

    ȡ½V-T

    ҪLTspiceȡOUT1½Էֶξ(PWL)̖}_늉Դʽݔ_lػ½ݔ뼤ʹõݔ̼DQҪԱģȡݔDQڜyݔ_늉rʹ.TRANԭDM˲Bһ50 ؓdȡ3Bݔ_4V-TεĔܕ򾏛_OӋͬMݔDQ50 V-TȡĬJdֵPCB߾ĵֵ50 ؓdBӵ_أdӵأVDDdVDDݔ_


    D19.ʹ}_늉ԴIJɘݔ̼

    ͨ^Ե؞50 ؓd@ȡ½

    ˮaһԵ؞ʵ½ݔҪһ½ݔ50 ؓdҪGNDD20ʾõV-TD21ʾݔ16 ns20 nsҪע˲BrgԲ׽½Σڷr


    D20.ͨ^Ե؞ʵ50 ؓd@ȡ½εADxxxxO


    D21.ͨ^Ե؞ʵ50 ؓd@ȡ½εADxxxxY

    ͨ^VDD50 ؓd@ȡ½

    D22@ʾͨ^VDD50 ؓd@ȡ½εOúͽYDʾҪȫ@ݔ½SwҪ50 ns˲Brg


    D22.VDD50 ؓdADxxxxOúDOUT1½ΈD

    ͨ^Ե؞50 ؓd@ȡ

    PWL̖ʽݔ̼D23еO@ʾؓdBڵصݔ_@aؓdصV-T


    D23.Ե؞50 ؓdADxxxxOúDOUT1ΈD

    ؓdBVDDr

    ʹͬݔ̼50 ҪVDD

    zV-T_ԵһNDz鿴߉݋늉߉݋늉VDDʲΑͬ߉݋늉߉݋늉ƽ߉݋늉cVDDͬһGNDʲҲͬ߉݋늉߉݋늉߉݋늉ƽs0 V


    D24.VDD50 ؓdADxxxxOúDOUT1ΈD



    Ȼ횈²EԱĂOȡV-TΣ
    u        IΓD
    u        ˑͣļȻΓ􌢔ı


    D25.LTspiceDıļ

    u        xҪIJκ͌εĿ
    u        VXVYʾ/½DQص20%80%cλõ늉
    u        dVdT@ЩIBISģ͵[б]PIֵӋֵ
    u       


    D26.x߾OñĿ

    ʹLTspiceȡб”

    [б]PIб(dV/dt)ʾ½DQص20%80%λò׽½VT˷LTspiceόF܉ʹ.MEAS.PARAMָӋ@Щͨ^VTOSPICEָбȡ^@ζбºVTοͬrȡ


    D27.ADxxxx VTOԼȡεбµĸָ

    D27@ʾбӋOӋ½εбԓQVLOVHIĕrgֵ½бµݔΏľ_߉݋ƽ_ʼD׃߉݋ƽ

    бȡLTspiceָ

    бȡSPICEָ£.TRAN@VT/½εSPICEָ.OPTIONSڌSPICEe`־@ʾݔOÞѿģʽƞЧλ.MEASбµČHӋ
    u        VLOʾ߉݋늉
    u        VHIʾ߉݋늉
    u        DiffʾDQ20%cλõ늉ԓ늉քecVLOVHIӺpԵõDQ20%80%cλ


    D28.б²


    D29.SPICEe`־Ӌб


    IBISģ

    ȡI-VV-TgBISģ(.ibs)ļIBISļČHģÑژIBISģ͕r

    .ibsļ[IBIS Ver]PI_^ļӆ̖IBIS汾3.2[IBIS Ver]PIʹǘ3Bݔ_Ͱ汾.ibsļļ[ļQ]PIеļͬtzye`ļðκδĸֻSļʹСĸPҪPIں¹ӑՓ



    .ibsļһְ[M][][b][_]PIADxxxxЃɂݔ뾏_DIN1ENһݔ_(DOUT1)IBISģͿ_ģ[b]PIͨ^RLCbֵķbģ_ģQ[_]PI¶x@c[ģ]PI¶x׃



    .ibsļһʹÜyóI-VV-TĔ־_ģ_ģ͵ăModel_type׃ָľ_^Ͷģcmos_di1һݔ뾏_ľ_ģֻC_comp[Power_Clamp][GND_Clamp]ݔ뾏_ģ߀VINHVINLֵ@ɂֵĔփҵDIN1ENݔ뾏_ľ_ģ;ͬĽY



    һ3B_ģͰһЩcݔ뾏_ģƵPI~I-VV-Tcmos_out1ľ_ģͰһ~ӅCrefݔؓd߀Vmeas늉ƽͨrʹõVmeasVDDֵһ



    C_comp[Power_Clamp][GND_Clamp]3B_߀~I-V[][]




    IBISģͶԓ[Yβ]PIYβ

    IBISģC

    籾ϵµĵ1IBISģCɽyԇP^̽M@ЩǴ_IBISļIBISҎıҪEģ͵ĈбMܽӽSPICEģ



    һЄIBISļȑMнyԇȻ^mP^ibischkڙzIBISļGolden ParserڙzIBISļǷIBISfOõҎPϢՈLibis.org׫ĕrʹõ½ibischk汾7

    ڈнyԇrʹüibischkIBISģ;݋ܛCadence Model IntegrityHyperlynx Visual IBIS Editor@ЩںZzÑ]@ЩLibis.orgMdɈдaڸNϵyϾgÑؓđʹķNϵy

    P

    @CAҪzIBISģ͵ǷcģͣڱОSPICEģͣͬ7@ʾͬIBIS|e03˽̶ܲͬȜyԇIBISģ͵ľ_̶ڱڅģADxxxx SPICEģɵIBISģ͵|ȼ2a@ζͨ^˽yԇДփһM_ąͨ^P

    7.IBIS|ȼ
    f
    0ͨ^Golden  Parser (ibischk)
    1czļһ_
    2acP
    2bcyP
    3ȫ

    ҪIBISģcSPICEģP“԰һЩҎEвD30ёDY@ЩE


    D30.IBIScSPICEģ͵P“̈D

    OƷ|

    P“ĻAͬļdlݔ̼IBISģ͵О鑪ԓcSPICEģֽ͔ӿͬ@ζՓݔԓدBһһfЃɷNIBISģ͵ݔcSPICEģ͵Ľӽ̶ȣԷͶÑʹ@ɷN_IBISģcSPICEģ֮gPϵ

    FOMyԇҪÑ^Ҫ󌦃ɂݔMĿҕzԴ_Ƿͨ^Pԙz@ͨ^BIBISSPICEݔY팍FʹùД_DǷPMжFOMyԇ֮ǰ@PԳzӿ^͵lʻ\Еr˜yԇ

    IBIS IO_փһNFOMyԇjʹ^늉ضȘOֵxССPԵ߅Ҫͨ^yԇIBISYеcԓС֮@NڱвmHmڵ͗l

    FOMyԇʹÔW\IBIScSPICE֮gPIBIS IO_փҲjʹIBISSPICEݔĔcӋIBISͅc֮gxSySֵĽ^ֵSʹõĿcij˷eĿw繫ʽ3ʾ˷mzyʾđðP“߀Ҫ]3нoFOMҪIBISSPICEĽYӳ䵽һͨõx-yW@õֵ㷨ͲֵÑҪпٶFOMyԇһNʹxS޶ee



    eSPICEY酢^IBISµӋew繫ʽ4ʾMeyԇ֮ǰģͱͨ^Ԝyԇ@_IBISSPICEͬ໥Bګ@ȡµer錦IBISSPICEYʹͬķÑʹÔֵҎtcҎtʹ@NrhʹñMܶcԸӽԓe



    CADxxxx IBISģ

    IBISģCĵһǽyԇD31@ʾadxxxx.ibs IBISģļĽyԇYԓļʹHyperLynx Visual IBIS EditorÑнyԇrĿDzFκe`Fκe`򾯸ʾģ͘ˆTҪԽQ@ӿԱCIBISģڷ湤֮gļ


    D31.ADxxxx yԇY

    һOFOMăHʹöFOMePԵķԓyԇܕʹIBISSPICEͬؓdlݔ̼µ˲B푑eFOM95%ͨ^PԜyԇDOUT1DIN1ENPʾ

    DOUT1

    D32@ʾLTspiceڙzyDOUT1PԵSPICEyԇ_ԭDṩm늉ԴʹҞDIN1_ṩ}_̖ԴDOUT1ҪLTspiceDOUT1ģ߀Ҫʹ~ĽMC_compоƬC_compC_loadӵLTspiceģͺ^mRLCbR_pkgL_pkgC_pkgC_load


    D32.LTspice DOUT1PԜyԇ_

    DOUT1 IBISģPԜyԇ_KeysightMOӋϵy(ADS)D33ʾcLTspiceyԇ_һʹͬݔ뼤C_load늉Դ˲BδԭD@ʾC_compRLCbѽ3BIBISģK


    D33.ADS OUT1PԜyԇ_

    ˲B푑C_loadyó҂^LTspiceADSYBһʩFOMD34ʾLTspiceADS DOUT1푑dzʹͶ֮gIJӋ1 s˲BrgµeӋóe99.79%MOõġ95%ͨ^yԇlDOUT1 IBISģcSPICEģP


    D34.LTspicecIBISģOUT1푑

    DIN1EN

    Cݔ˿ڕrͨ^FOMeP“LTspiceADS˲B푑LTspiceеĜyԇ_D35ʾ@mDIN1EN_cDOUT1һȡC_compDIN1˿λRLCbЧȻB50 R_seriesԓݔ̼}_늉Դy푑̽^cDIN1_probeλ


    D35.LTspice DI1PԜyԇ_

    Cݔ˿ڵKeysight ADSyԇ_D36ʾͬݔ˿ǰһR_series 50 ʹͬݔ}_̼̎δ@ʾC_compRLCЧѽIBISģKڜy˲B푑̽^λDI1_probeλ


    D36.ADS DI1PԜyԇ_

    LTspiceADS˲B푑BһMFOMԜyԇD37ʾͬLTspiceȫcADSدBӋóDI1e100%MOõġ95%ͨ^yԇlEN_PԽYҲoͬĈDκe


    D37.LTspicecIBISģ͵DI1푑

    Y

    ĽBʹLTspiceȡ͘IBISģ߀ͨ^FOMeĶFOMIBISģcSPICEģP“ķ@ӾͿ׌Ñ_IBISģ͵ОcSPICEģM߀бδB͵ĔIOȡC_compI-VV-Tij鄓IOģ͵ĻA

    MdͰbLTspice_ʼԼIBISģ

    Y
    Casamayor, Mercedes.AN-715ùPӛ߽IBISģͣʲôIBISģɵADI˾2004
    IBISI/O_փIBIS_Փ20004
    Roy LeventhalLynne Green댧wģ̖ʺ늴ԷSpringer2006
    Michael MirmakJohn AnguloIan DoddLynne GreenSyed HuqArpad MuranyiBob RossIBISģփԣIBIS 4.0棩IBIS_Փ20059

    ߺ
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