Leap-Frog Filter

Component table with nominal values
Operational amplifiers:6 (Opamp2)	OA2_1-OA2_6
Resistors	R1-R13=10KW
Capacitors	C1=0.01mF, C2, C3=0.02mF, C4=0.01mF

Leap-frog filter frequency response with nominal values.

Component variation table	Nominal value	Variation at 1s
R1-R13	10KW	200 W
C1	0.01 mF	0.0002 mF
C2-C3	0.02 mF	0.0004 mF
C4	0.01 mF	0.0003 mF

Leap-frog filter frequency response with component variation.

Hard fault table	Faults	No. of faults
OA2_1-OA2_6	Opamp faults	6X20=120(Ref:section3)
R1-R13	Stuck-short/stuck-open	2X13=26
C1-C4	Stuck-short/stuck-open	2x4=8
Total no. of faults		154

Soft fault table	Nominal value	- 6s	+6s
R1-R13	10KW	8.8KW	11.2KW
C1	0.01 mF	0.0088 mF	0.0112 mF
C2-C3	0.02 mF	0.0176 mF	0.0224 mF
C4	0.01 mF	0.0082 mF	0.0118 mF

Leapfrog filter(opamp -in +in out vdd vss)
.Subckt opamp 4 5 8 1 11
.MODEL mosn NMOS
+ vto=1 kp=17u gamma=1.3 lambda=0.01 phi=0.7
+pb=0.8 mj=0.5 mjsw=.3 cgso=350p cgdo=350p cgbo=200p
+cj=300u cjsw=500p ld=0.8u tox=80n
.MODEL mosp PMOS
+ vto=-1 kp=8u gamma=.6 lambda=0.02 phi=0.6
+pb=0.5 mj=0.5 mjsw=.25 cgso=350p cgdo=350p cgbo=200p
+cj=150u cjsw=400p ld=0.8u tox=80n
R1a 6 66 1U
R1b 66 3 100g
m1 66 4 3 3 mosp w=20u l=10u
R2a 7 77 1U
R2b 77 3 100g
m2 77 5 3 3 mosp w=20u l=10u
R3a 6 67 1U
R3b 67 11 100g
m3 67 6 11 11 mosn w=36u l=10u
R4a 7 78 1U
R4b 78 11 100g
m4 78 6 11 11 mosn w=36u l=10u
R5a 3 33 1U
R5b 33 1 100g
m5 33 2a 1 1 mosp w=30u l=10u
R6a 8 88 1U
R6b 88 11 100g
m6 88 7 11 11 mosn w=100u l=10u
R7a 8 89 1U
R7b 89 1 100g
m7 89 2 1 1 mosp w=42u l=10u
R8a 2 22 1U
R8b 22 11 100g
m8 22 6 11 11 mosn w=60u l=10u
R9a 2 23 1U
R9b 23 1 100g
m9 23 2 1 1 mosp w=30u l=10u
Rc 7 76 1U
cc 76 8 6p
Rs 76 8 100g
vbias 2a 0 .1
.ends

VIN 20 0 ac 10
R1 20 2 10K
R2 2 4 10K
R3 10 2 10K
R4 4 5 10K
R5 5 7 10K
R6 7 8 10K
R7 10 11 10K
R8 13 14 10K
R9 14 16 10K
R10 17 19 10K
R11 16 17 10K
R12 19 11 10K
R13 13 5 10k
C1 2 49 0.01uf
R49 49 4 1U
R50 2 4 100g
C2 8 59 0.02uf
R59 59 10 1U
R60 8 10 100g
C3 11 69 0.02uf
R69 69 13 1U
R70 11 13 100g
C4 17 79 0.01uf
R79 79 19 1u
R80 17 19 100g
xop1 2 0 4 VCC VEE opamp
xop2 5 0 7 VCC VEE opamp
xop3 8 0 10 VCC VEE opamp
xop4 11 0 13 VCC VEE opamp
xop5 14 0 16 VCC VEE opamp
xop6 17 0 19 VCC VEE opamp
Vdd VCC 0 15.0V
Vss VEE 0 -15.0V
.ac dec 20 1 5k
.plot v(19)
.options list post=2
.end