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Electronics Forum / CAD / February 2005Does anyone have spice models for MRF545/MRF544? Maybe from the Intusoft ICAP4 package?
Hi, I am searching for spice models for MRF545 and MRF544. Seems they are at least in the intusoft RF devices library. But I do not have ICAP (I use Topspice). Anyone have these models and could give them to me? Best Regards Frank Moe Hello Frank, you should try a search with Google with the following text. mrf545 spice Use the third link. Ok it's dead but click on "cache" there. They have kept the data. Best Regards, Helmut > Hi, > I am searching for spice models for MRF545 and MRF544. [quoted text clipped - 3 lines] > Best Regards > Frank Moe Hi Helmut, thanks for the info, but I had found that before. This model uses heavy caps in the subcircuit around the transistor model, so I think it has been tweaked only for one single bias point. As I will have to amplify also DC over a wide voltage range I might need a better matched model... Anyone here have the Intusoft library? Frank Frank Moe wrote... > I am searching for spice models for MRF545 and MRF544. > Seems they are at least in the intusoft RF devices library. > But I do not have ICAP (I use Topspice). > Anyone have these models and could give them to me? .SUBCKT MRF545 1 2 3 LC 1 4 0.905E-9 LB 2 6 0.237E-9 LE 5 3 2.789E-9 CC 4 3 1.068E-12 CB 4 6 0.548E-12 Q1 4 6 5 QR96 .MODEL QR96 PNP ( BF=77 VAF=40 VAR=5.6 RC=1.06 RB=1.10 +RE=0.592 IKF=2.80E-01 ISE=3.60E-14 TF=4.747E-11 +TR=3.42E-09 ITF=6.65E-02 VTF=2.31E+01 CJC=4.646E-12 +CJE=63.84E-12 XTI=3.0 NE=1.5 ISC=1.20E-14 EG=1.11 PTF=25 +XTB=1.5 BR=2.00 VJC=0.75 VJE=0.75 IS=4.00E-15 +MJC=0.33 MJE=0.33 XTF=4.0 IKR=2.80E-01 KF=1.0E-15 +NC=1.7 FC=0.50 RBM=0.81 IRB=4.00E-02 XCJC=0.561 ) .ENDS I assume you already have the datasheet s-parameters.  SignatureThanks, - Win > Frank Moe wrote... > > [quoted text clipped - 20 lines] > > I assume you already have the datasheet s-parameters. Winfried, many thanks for your help! Is this the Intusoft model? Do you also have the 544 model? I do not have s-parameters as I have no original data sheet. Only the datasheet of the substitutes from the other manufacturers... Frank |
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