* ************  FILTER DESIGNER SUBCIRCUITS  *************

*   *********************************

* RC STAGES 

* FIRST ORDER RC STAGE
.SUBCKT LINSTG IN OUT AGND  
+ PARAMS: C1VAL=1 C2VAL=1 R1VAL=1 R2VAL=1
C1 IN  N1   {C1VAL}
C2 N1  OUT  {C2VAL}
R1 IN  N1   {R1VAL}
R2 N1  OUT  {R2VAL}
EAMP1 OUT AGND AGND N1  5000
.ENDS


* TT BIQUAD STAGE
.SUBCKT TTSTG IN OUT AGND 
+ PARAMS: C1VAL=1 C2VAL=1 R1VAL=1 R2VAL=1 R3VAL=1
+         R4VAL=1 R5VAL=1 R6VAL=1 R7VAL=1 R8VAL=1
C1 N1  A1  {C1VAL}
C2 N3  A3  {C2VAL}
R1 N1  A1  {R1VAL}
R2 OUT N3  {R2VAL}
R3 N1  A3  {R3VAL}
R4 IN  N1  {R4VAL}
R5 IN  N3  {R5VAL}
R6 IN  N2  {R6VAL}
R7 A1  N2  {R7VAL}
R8 N2  OUT {R8VAL}
EAMP1 A1  AGND AGND N1  5000
EAMP2 OUT AGND AGND N2  5000
EAMP3 A3  AGND AGND N3  5000
.ENDS


* AM BIQUAD STAGE
.SUBCKT AMSTG IN OUT AGND 
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 R1VAL=1 R2VAL=1 R3VAL=1
+         R4VAL=1 R5VAL=1 R6VAL=1 R7VAL=1 R8VAL=1
C1 N1  A2  {C1VAL}
C2 N3  OUT {C2VAL}
C3 IN  N3  {C3VAL}
R1 N2  A2  {R1VAL}
R2 A1  N2  {R2VAL}
R3 A1  N3  {R3VAL}
R4 IN  N3  {R4VAL}
R5 IN  N2  {R5VAL}
R6 N3  OUT {R6VAL}
R7 N1  OUT {R7VAL}
R8 IN  N1  {R8VAL}
EAMP1 A1  AGND AGND N1  5000
EAMP2 A2  AGND AGND N2  5000
EAMP3 OUT AGND AGND N3  5000
.ENDS

*   *********************************

* SCF STAGES - CMOS TRANSISTOR SWITCHES 

* FIRST ORDER SCF STAGE
.SUBCKT LINT IN OUT AGND PH1 PH1N PH2 PH2N 
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 CAVAL=1
XSW1 IN  N1   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW2 N3  N2   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW3 OUT N4   AGND  CLK2  CLK2N  CLK1  CLK1N
C1 IN  N3  {C1VAL}
C2 N1  N2  {C2VAL}
C3 N2  N4  {C3VAL}
CA OUT N3  {CAVAL}
EAMP1 OUT AGND AGND N3  5000
.ENDS

* LO Q BIQUAD SCF STAGE
.SUBCKT LOQT IN OUT AGND PH1 PH1N PH2 PH2N 
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW2 N3  N2   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW3 MID N4   AGND  CLK1  CLK1N  CLK2  CLK2N
XSW4 N6  N5   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW5 OUT N7   AGND  CLK2  CLK2N  CLK1  CLK1N
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N5  N7  {C4VAL}
C5 N1  N5  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS
*
* HI Q BIQUAD SCF STAGE
.SUBCKT HIQT IN OUT AGND PH1 PH1N PH2 PH2N 
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW2 N3  N2   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW3 MID N4   AGND  CLK1  CLK1N  CLK2  CLK2N
XSW4 N6  N5   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW5 OUT N7   AGND  CLK2  CLK2N  CLK1  CLK1N
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N3  OUT {C4VAL}
C5 IN  N3  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS


* LO Q ALL PASS BIQUAD SCF STAGE
.SUBCKT LOQAPT IN OUT AGND PH1 PH1N PH2 PH2N 
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW2 N3  N2   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW3 MID N4   AGND  CLK1  CLK1N  CLK2  CLK2N
XSW4 N6  N5   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW5 OUT N7   AGND  CLK2  CLK2N  CLK1  CLK1N
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N5  N7  {C4VAL}
C5 N5  N8  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS


* HI Q ALL PASS BIQUAD SCF STAGE
.SUBCKT HIQAPT IN OUT AGND PH1 PH1N PH2 PH2N 
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW2 N3  N2   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW3 MID N4   AGND  CLK1  CLK1N  CLK2  CLK2N
XSW4 N6  N5   AGND  CLK2  CLK2N  CLK1  CLK1N
XSW5 OUT N7   AGND  CLK2  CLK2N  CLK1  CLK1N
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N3  OUT {C4VAL}
C5 N5  N8  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS


* GROUNDED SWITCH PAIR
.SUBCKT SWPAIR IN OUT AGND PH1 PH1N PH2 PH2N 
MN01    IN   PH1  OUT  OUT  N  L={LN} W={WN}
+	AD={ADN} AS={ASN} PD={PDN} PS={PSN}
MP01    IN   PH1N OUT  OUT  P  L={LP} W={WP}
+	AD={ADP} AS={ASP} PD={PDP} PS={PSP}
MN02    1    PH2  AGND AGND N  L={LN} W={WN}
+	AD={ADN} AS={ASN} PD={PDN} PS={PSN}
MP02    1    PH2N AGND AGND P  L={LP} W={WP}
+	AD={ADP} AS={ASP} PD={PDP} PS={PSP}

* SWITCH PARAMETRIC VALUES
.PARAM  WN=2U LN=2U ADN=20P ADN=20P 
+       PDN=18U PSN=18U
+	WP=2U LP=2U ADP=20P ADP=20P 
+       PDP=18U PSP=18U
.ENDS

*   *********************************

SCF STAGES - IDEALIZED SWITCHS


* FIRST ORDER SCF STAGE
.SUBCKT LINS IN OUT AGND PH1 PH2  
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 CAVAL=1
XSW1 IN  N1   AGND  CLK2  CLK1  SWPAIR
XSW2 N3  N2   AGND  CLK2  CLK1  SWPAIR
XSW3 OUT N4   AGND  CLK2  CLK1  SWPAIR
C1 IN  N3  {C1VAL}
C2 N1  N2  {C2VAL}
C3 N2  N4  {C3VAL}
CA OUT N3  {CAVAL}
EAMP1 OUT AGND AGND N3  5000
.ENDS


* LO Q BIQUAD SCF STAGE
.SUBCKT LOQS IN OUT AGND PH1 PH2  
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK1  SWPAIR
XSW2 N3  N2   AGND  CLK2  CLK1  SWPAIR
XSW3 MID N4   AGND  CLK1  CLK2  SWPAIR
XSW4 N6  N5   AGND  CLK2  CLK1  SWPAIR
XSW5 OUT N7   AGND  CLK2  CLK1  SWPAIR
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N5  N7  {C4VAL}
C5 N1  N5  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS


* HI Q BIQUAD SCF STAGE
.SUBCKT HIQS IN OUT AGND PH1 PH2  
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK1  SWPAIR
XSW2 N3  N2   AGND  CLK2  CLK1  SWPAIR
XSW3 MID N4   AGND  CLK1  CLK2  SWPAIR
XSW4 N6  N5   AGND  CLK2  CLK1  SWPAIR
XSW5 OUT N7   AGND  CLK2  CLK1  SWPAIR
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N3  OUT {C4VAL}
C5 IN  N3  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS



* LO Q ALL PASS BIQUAD SCF STAGE
.SUBCKT LOQAPS IN OUT AGND PH1 PH2  
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK1  SWPAIR
XSW2 N3  N2   AGND  CLK2  CLK1  SWPAIR
XSW3 MID N4   AGND  CLK1  CLK2  SWPAIR
XSW4 N6  N5   AGND  CLK2  CLK1  SWPAIR
XSW5 OUT N7   AGND  CLK2  CLK1  SWPAIR
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N5  N7  {C4VAL}
C5 N5  N8  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS


* HI Q ALL PASS BIQUAD SCF STAGE
.SUBCKT HIQAPS IN OUT AGND PH1 PH2  
+ PARAMS: C1VAL=1 C2VAL=1 C3VAL=1 C4VAL=1
+         C5VAL=1 C6VAL=1 CAVAL=1 CBVAL=1
XSW1 IN  N1   AGND  CLK2  CLK1  SWPAIR
XSW2 N3  N2   AGND  CLK2  CLK1  SWPAIR
XSW3 MID N4   AGND  CLK1  CLK2  SWPAIR
XSW4 N6  N5   AGND  CLK2  CLK1  SWPAIR
XSW5 OUT N7   AGND  CLK2  CLK1  SWPAIR
C1 N1  N2  {C1VAL}
C2 N2  N7  {C2VAL}
C3 N4  N5  {C3VAL}
C4 N3  OUT {C4VAL}
C5 N5  N8  {C5VAL}
C6 IN  N6  {C6VAL}
CA N3  MID {CAVAL}
CB N6  OUT {CBVAL}
EAMP1 MID AGND AGND N3  5000
EAMP2 OUT AGND AGND N6  5000
.ENDS