Zin=<-1,0,0..∞> | Ω | input impedance (resistive). There are three possible settings:
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Zout=<0,0..∞> | Ω | output impedance (resistive). There are two possible settings:
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Note: Only one of the impedances can be zero at a time. | ||
sim | s | total .TRAN simulation time, needs test=1 . E.g.: if the command is .TRAN 25m , then sim=25m . (optional) |
test=<0,1> | 0 disables, 1 enables pin 0.2 . (optional)Note: In .AC , using .op flags may not be possible (they will either be grayed out in the menu or showing question marks instead of values). This might be avoided by either setting test=1 , even though the test pins have no effect in frequency domain, or by simply adding a behavioural source with V=0 (or I=0), which will hardly encumber the matrix while forcing LTspice to display the .op . |
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fc | Hz | the center frequency. |
BWp | Hz | the pass-band bandwidth. |
BWs | Hz | the stop-band bandwidth. |
See the graphs on how to get the desired function with fc , BWp and BWs . |
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G=<-∞..∞> | gain, linear. | |
Asc | dB | frequency-scaling attenuation, positive value. |
Ap | dB | pass-band ripple, positive value (Chebyshev_LC). |
As | dB | stop-band attenuation, positive value. |
N=<0:64> | order of the filter. For LP/HP it's maximum 32 , while for BP/BS it's 64 and only even orders are valid.N=0 means minimum order determination based on the values of the frequencies and attenuations. |
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Hidden: | ||
Rpar1 | Ω | dummy parallel resistance across elements, default zero. |
Rser | Ω | dummy series resistance along elements, default zero. |
Rpar
mey need to be set in 1Meg
or higher should do.