Version 4
SHEET 1 1684 1212
WIRE 352 -112 304 -112
WIRE 480 -112 416 -112
WIRE 304 -16 304 -112
WIRE 352 -16 304 -16
WIRE 480 -16 480 -112
WIRE 480 -16 432 -16
WIRE -112 0 -112 -32
WIRE 400 112 400 96
WIRE -160 128 -208 128
WIRE -112 128 -112 80
WIRE -112 128 -160 128
WIRE 0 128 -112 128
WIRE 48 128 0 128
WIRE 144 128 112 128
WIRE 224 128 144 128
WIRE 304 128 304 -16
WIRE 304 128 224 128
WIRE 368 128 304 128
WIRE 480 144 480 -16
WIRE 480 144 432 144
WIRE 560 144 480 144
WIRE -208 160 -208 128
WIRE -112 160 -112 128
WIRE 224 160 224 128
WIRE 368 160 336 160
WIRE 400 192 400 176
WIRE 0 224 0 128
WIRE 32 224 0 224
WIRE 144 224 144 128
WIRE 144 224 112 224
WIRE 336 240 336 160
WIRE 224 256 224 224
WIRE -208 272 -208 224
WIRE -112 272 -112 240
WIRE 0 336 0 224
WIRE 16 336 0 336
WIRE 144 336 144 224
WIRE 144 336 96 336
WIRE 336 336 336 320
WIRE 336 432 336 416
WIRE 464 432 464 416
WIRE 336 528 336 512
WIRE 464 528 464 512
FLAG 400 96 +V
FLAG 400 192 -V
FLAG 336 336 0
FLAG 560 144 out1
FLAG 224 256 0
FLAG -112 272 0
FLAG 336 528 0
FLAG 336 416 +V
FLAG 464 528 0
FLAG 464 416 -V
FLAG -112 -32 +V
FLAG -208 272 0
FLAG -160 128 VB
DATAFLAG -64 128 "round($*1k)/1k"
SYMBOL diode 112 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value DPH
SYMBOL Misc\\EuropeanResistor 336 0 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName RF
SYMATTR Value 500k
SYMBOL cap 352 -96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 10p
SYMBOL Misc\\EuropeanResistor -128 -16 R0
SYMATTR InstName R1
SYMATTR Value 20k
SYMBOL current 16 336 M90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 60 40 VTop 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(1.5u 2.5u 10u 1n 1n 0.1m 0.2m)
SYMATTR Value2 AC 1u
SYMBOL Misc\\EuropeanResistor 16 240 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName RP
SYMATTR Value 1G
SYMBOL cap 208 224 M180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName CW
SYMATTR Value 5p
SYMBOL Misc\\EuropeanResistor -128 144 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL voltage 336 416 R0
SYMATTR InstName VB1
SYMATTR Value 6
SYMBOL voltage 464 416 R0
SYMATTR InstName VB2
SYMATTR Value -6
SYMBOL cap -224 160 R0
SYMATTR InstName C1
SYMATTR Value {CB}
SYMBOL Opamps\\UniversalOpamp2 400 144 R0
SYMATTR InstName U1
SYMATTR SpiceModel level.3b
SYMATTR Value2 Avol=1Meg GBW=1Meg Slew=1Meg
SYMATTR SpiceLine2 en=10n enk=0 in=0 ink=0 Rin=10T
SYMBOL voltage 336 224 R0
SYMATTR InstName VOFFS
SYMATTR Value 1
TEXT 192 -296 Left 2 !.model DPH D(Cjo=40p Rs=20)
TEXT -192 -296 Left 2 !.tran 0 200u 0 0.1u
TEXT -192 -336 Left 2 ;.ac dec 100 1 1Meg
TEXT -192 -264 Left 2 !.options plotwinsize=0
TEXT -192 -376 Left 2 ;.noise V(out1) I1 dec 100 100 1Meg
TEXT -192 -224 Left 2 ;.step param CB list 0 1u
TEXT -192 -144 Left 2 !.meas noise VN1 INTEG V(onoise)
TEXT -192 -192 Left 2 !.param CB=1u
RECTANGLE Normal 176 368 -32 80 2