		 

    :

Attenuator	
 
* Att	
	    .
* Calc
	      R16  R17  
	    Re,   
	    Att.
* R16  R17
	 ,   .

LP filter section	  LP ()
  Lowpass
* Filter order	 
	     lowpass .
* Cutoff	
	    lowpass
* Calc
	      L11, C12, L13  C14 
	     ; 
	 ,    Re.  , 
	    ,  N=4,   
	   .    
	   Butterworth ().
* L11, C12, L13, C14
	,    lowpass

Notch section	 
* R15  L15  C15
	,  ,    
	   ,  
	      .

Zobel 
 
* Calc
	      R18  C18  
	    Re  Le,   
	 .
* R18  C18
	,   zobel ()

* Disconnect	
	  ,   
	       
	 10^12 .