Version 4
SHEET 1 880 680
WIRE -128 -48 -192 -48
WIRE -16 -48 -48 -48
WIRE 48 -48 -16 -48
WIRE 208 -48 128 -48
WIRE -192 -16 -192 -48
WIRE 32 48 16 48
WIRE 112 48 96 48
WIRE 144 64 128 64
WIRE 16 96 16 48
WIRE 96 96 16 96
WIRE 96 112 96 96
WIRE 112 112 112 48
WIRE 128 112 128 64
WIRE -16 128 -16 -48
WIRE 80 128 -16 128
WIRE 208 144 208 -48
WIRE 208 144 144 144
WIRE 272 144 208 144
WIRE -208 160 -288 160
WIRE 80 160 -128 160
WIRE -288 192 -288 160
WIRE 112 208 112 176
WIRE 128 208 112 208
WIRE -288 288 -288 272
WIRE 112 336 112 320
WIRE 240 336 240 320
WIRE 112 432 112 416
WIRE 240 432 240 416
FLAG 144 64 VCC
FLAG 128 208 VSS
FLAG -288 288 0
FLAG 112 432 0
FLAG 240 432 0
FLAG 112 320 VCC
FLAG 240 320 VSS
FLAG -192 -16 0
FLAG 272 144 out
IOPIN 272 144 Out
FLAG -288 160 in
SYMBOL voltage -288 176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 .5 0 1u  1u 24u 50u)
SYMBOL voltage 112 320 R0
SYMATTR InstName V2
SYMATTR Value +15V
SYMBOL voltage 240 320 R0
SYMATTR InstName V3
SYMATTR Value -15V
SYMBOL res 32 -32 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 3k
SYMBOL res -144 -32 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 330
SYMBOL res -224 176 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R3
SYMATTR Value 330
SYMBOL cap 32 64 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value {Cc}
SYMBOL NE5534 112 80 R0
SYMATTR InstName U1
TEXT -520 40 Left 0 !.tran 200u
TEXT -520 64 Left 0 !.options plotwinsize=0
TEXT -520 -128 Left 0 !.step param Cc list 1f 22p
TEXT -520 -48 Left 0 !.param Cc=22p
TEXT -224 -128 Left 0 ;Ccomp is stepped from 0pF to 22pF
TEXT 192 200 Left 0 ;<-- specific symbol NE5534.asy