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    The D/A simulaton of Hspice

    Does anyone know how to use vector in the Hspcie , runthe D/A simulation , And anyhave sin code for D/A simulation using Hspice , Thanks

    •   Alt7th April 2004, 06:32

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    Re: The D/A simulaton of Hspice

    The easiest way to generate the code for your D/A simulation is to build an ideal ADC with a sinewave input source. Then use its output to drive your DAC. HSPICE should have macro model capability to handle this.

    Willy



    •   Alt7th April 2004, 09:07

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    Re: The D/A simulaton of Hspice

    I design D/A

    simulation ramp for INLD/DNL --> use PULSE ..

    sim sine wave for SNR --> use table code

    but I think use behavior A/D is better .. but how modeling behavior A/D ?
    when I design flash A/D .. I use hspice and make a behavior D/A model .. I find I can not use "if else .. for decode circuit ..."

    finally I use verilog and synthesis a real decode , and convert to spice
    for behavior D/A model ...

    if hspice support some behavior language (if else .. when .. for next ..)
    I can make model easy ..



    •   Alt9th April 2004, 03:55

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  4. #4
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    The D/A simulaton of Hspice

    Excuse me , Do the HSpice has easy method to do bevior A/D for real D/A , Do yo have any example ?/ Thanks



  5. #5
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    Re: The D/A simulaton of Hspice

    I use VCVS make a idea comparator ..
    but hspice no ideal "switch " , you need a behavior switch ..

    detail please see hspice manual ..



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