nT=<-1,0> | affects the DC response for Chebyshev_IIR and Cauer_IIR:
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sim | s | total .TRAN simulation time, needs test=1 . E.g.: if the command is .TRAN 25m then sim=25m . (optional) |
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test=<0,1> | 1 enables pins 0.2 and 0.3 , 0 disables them. (optional) |
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SH=<0,1> | disables/enables (forces) a real sample&hold behaviour. There are two scenarios:
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Fact=<-k:k> | for k integer 1:
f0 , as a parameter, should be matched to the input's. The external sync, though, should match the output's. |
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f0 | Hz | the sampling frequency. For interpolation/decimation, f0 is set to match the input's frequency and BWp, BWs are calculated according to the specified f0 .E.g. for input of f0=1kHz and Fact=4 ⇒ f0=1k and BWp, BWs are calculated for 1kHz sampling frequency.For external synchronization set SH=1 , f0=−f0 while the external clock must have the output's sampling rate, CLK=f0*|Fact|sgn(Fact) .Examples:
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fc | Hz | the center frequency. (also see the description for f0). | ||||||
BWp | Hz | the pass-band bandwidth. (also see the description for f0). | ||||||
BWs | Hz | the stop-band bandwidth. (also see the description for f0). | ||||||
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 (all but Cauer_IIR). | ||||||
Ap | dB | pass-band ripple, positive value (Chebyshev_IIR and Cauer_IIR). | ||||||
As | dB | stop-band attenuation, positive. | ||||||
N=<0:32> | order of the filter. For BP, BS, its value represents half the real order, e.g. a BP set with N=13 actually has N=26 .N=0 means minimum order determination based on the values of fc , BWp and BWs . |
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Hidden: | ||||||||
td, tr | s | delay and rise times of the clock, effective if SH=1 ; default values are tr=f0/1000 and td=0 . |
Z-1/R
, while decimators have a S&H at the ouput and Z-R