Version 4
SHEET 1 1148 680
WIRE 400 -128 336 -128
WIRE 672 -128 400 -128
WIRE 336 -96 336 -128
WIRE 672 -80 672 -128
WIRE -272 -32 -560 -32
WIRE 336 16 336 -16
WIRE 672 48 672 0
WIRE -560 64 -560 -32
WIRE 400 64 400 -128
WIRE -608 80 -752 80
WIRE 384 80 336 80
WIRE 496 96 448 96
WIRE 512 96 496 96
WIRE 608 96 592 96
WIRE -272 112 -272 -32
WIRE 64 112 -272 112
WIRE 96 112 64 112
WIRE 208 112 176 112
WIRE 240 112 208 112
WIRE 384 112 320 112
WIRE -608 128 -640 128
WIRE 208 144 208 112
WIRE 496 144 496 96
WIRE -752 208 -752 80
WIRE -560 224 -560 144
WIRE 64 240 64 112
WIRE 96 240 64 240
WIRE 208 240 208 208
WIRE 208 240 176 240
WIRE 336 240 336 80
WIRE 496 240 496 208
WIRE 496 240 336 240
WIRE 512 240 496 240
WIRE 624 240 592 240
WIRE 672 240 672 144
WIRE 672 240 624 240
WIRE 768 240 672 240
WIRE 336 272 336 240
WIRE 624 272 624 240
WIRE 208 288 208 240
WIRE 672 288 672 240
WIRE -752 384 -752 288
WIRE -640 384 -640 128
WIRE -640 384 -752 384
WIRE -560 384 -560 304
WIRE -560 384 -640 384
WIRE 208 384 208 352
WIRE 208 384 -560 384
WIRE 336 384 336 352
WIRE 336 384 208 384
WIRE 400 384 400 128
WIRE 400 384 336 384
WIRE 624 384 624 352
WIRE 624 384 400 384
WIRE 672 384 672 352
WIRE 672 384 624 384
WIRE 720 384 672 384
WIRE 400 416 400 384
FLAG 400 416 0
FLAG 336 16 0
FLAG 768 240 Out
SYMBOL res 192 96 R90
WINDOW 0 -26 63 VBottom 2
WINDOW 3 -28 58 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 192 224 R90
WINDOW 0 -22 63 VBottom 2
WINDOW 3 -26 57 VTop 2
SYMATTR InstName R2
SYMATTR Value 40k
SYMBOL res 336 96 R90
WINDOW 0 -24 64 VBottom 2
WINDOW 3 -28 59 VTop 2
SYMATTR InstName R3
SYMATTR Value 220
SYMBOL cap 192 144 R0
WINDOW 0 27 56 Left 2
WINDOW 3 27 78 Left 2
SYMATTR InstName C1
SYMATTR Value 470µ
SYMBOL cap 192 288 R0
WINDOW 0 26 55 Left 2
WINDOW 3 26 78 Left 2
SYMATTR InstName C2
SYMATTR Value 470µ
SYMBOL res 352 256 M0
WINDOW 0 45 20 Left 2
WINDOW 3 35 41 Left 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 608 80 R90
WINDOW 0 -23 65 VBottom 2
WINDOW 3 -26 66 VTop 2
SYMATTR InstName R6
SYMATTR Value 47
SYMBOL res 656 -96 R0
WINDOW 0 42 53 Left 2
WINDOW 3 42 75 Left 2
SYMATTR InstName R7
SYMATTR Value 50
SYMBOL cap 656 288 R0
WINDOW 0 30 -16 Left 2
WINDOW 3 28 7 Left 2
SYMATTR InstName C3
SYMATTR Value 100µ
SYMBOL cap 480 144 R0
WINDOW 0 -35 47 Left 2
WINDOW 3 -37 68 Left 2
SYMATTR InstName C4
SYMATTR Value 1µ
SYMBOL res 608 224 R90
WINDOW 0 -25 65 VBottom 2
WINDOW 3 -29 67 VTop 2
SYMATTR InstName R8
SYMATTR Value 5k
SYMBOL voltage -560 208 R0
WINDOW 123 31 117 Left 2
WINDOW 39 14 164 Left 2
WINDOW 3 28 141 Left 2
WINDOW 0 52 80 Left 2
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=1
SYMATTR Value 7
SYMATTR InstName V1
SYMBOL voltage 336 -112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 0 -69 32 Left 2
WINDOW 3 -69 54 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL OpAmps\\ADA4523-1 416 96 R0
WINDOW 3 0 -140 Left 2
WINDOW 0 0 -115 Left 2
SYMATTR InstName U1
SYMBOL res 608 256 R0
WINDOW 0 -41 53 Left 2
WINDOW 3 -41 77 Left 2
SYMATTR InstName R5
SYMATTR Value 5k
SYMBOL npn 608 48 R0
SYMATTR InstName Q1
SYMATTR Value BC337-40
SYMBOL e -560 48 R0
SYMATTR InstName E1
SYMATTR Value 50
SYMBOL res -768 192 R0
SYMATTR InstName R9
SYMATTR Value 100
TEXT -168 -24 Left 2 !.noise V(Out) V1 oct 100 0.1 100
TEXT -168 -64 Left 2 !;ac dec 100 0.1 100
TEXT -536 176 Left 2 ;White noise generator
TEXT -504 224 Left 2 ;R9  is  voltage-controlled-voltage-source (VCVS).