Version 4
SHEET 1 1104 864
WIRE 208 32 -416 32
WIRE 640 32 208 32
WIRE -16 96 -128 96
WIRE 112 96 64 96
WIRE 880 96 112 96
WIRE 1008 96 880 96
WIRE -416 128 -416 32
WIRE 112 128 112 96
WIRE -128 144 -128 96
WIRE 1008 208 1008 96
WIRE 112 240 112 192
WIRE 400 240 112 240
WIRE 928 240 480 240
WIRE -416 256 -416 208
WIRE -336 256 -416 256
WIRE -336 272 -336 256
WIRE -128 272 -128 224
WIRE 208 304 208 32
WIRE -416 320 -416 256
WIRE 176 320 144 320
WIRE 288 336 240 336
WIRE 336 336 288 336
WIRE 464 336 416 336
WIRE 1008 336 1008 288
WIRE 112 352 112 240
WIRE 176 352 112 352
WIRE 464 368 464 336
WIRE 288 400 288 336
WIRE 640 416 640 32
WIRE 608 432 576 432
WIRE 928 448 928 240
WIRE 928 448 672 448
WIRE 464 464 464 448
WIRE 608 464 464 464
WIRE 464 480 464 464
WIRE 800 512 752 512
WIRE 896 512 864 512
WIRE 144 576 144 320
WIRE 288 576 288 480
WIRE 288 576 144 576
WIRE 576 576 576 432
WIRE 576 576 288 576
WIRE 752 576 752 512
WIRE 752 576 576 576
WIRE 800 576 752 576
WIRE 896 576 896 512
WIRE 896 576 864 576
WIRE 928 576 928 448
WIRE 928 576 896 576
WIRE 464 592 464 560
WIRE -416 720 -416 400
WIRE 208 720 208 368
WIRE 208 720 -416 720
WIRE 640 720 640 480
WIRE 640 720 208 720
FLAG 464 672 0
FLAG -336 272 0
FLAG -128 272 0
FLAG 1008 336 0
FLAG 880 96 out
SYMBOL res 80 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 4k7
SYMBOL res 496 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1K8
SYMBOL res 320 352 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL res 304 496 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 22K
SYMBOL cap 96 128 R0
SYMATTR InstName C1
SYMATTR Value 68n
SYMBOL cap 864 496 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 150n
SYMBOL cap 864 560 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 150n
SYMBOL Opamps\\LT1001 208 272 R0
SYMATTR InstName U1
SYMBOL Opamps\\LT1001 640 384 R0
SYMATTR InstName U2
SYMBOL res 448 352 R0
SYMATTR InstName R5
SYMATTR Value 4K
SYMBOL res 448 464 R0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res 448 576 R0
SYMATTR InstName R7
SYMATTR Value 100K
SYMBOL voltage -416 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -416 304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage -128 128 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value SINE(0 0.7 50)
SYMBOL res 992 192 R0
SYMATTR InstName R8
SYMATTR Value 600R
TEXT -432 768 Left 2 ;.tran 0 2 1.5 20u
TEXT -432 808 Left 2 !.options plotwinsize=0
TEXT -432 848 Left 2 !.ac lin 1000 10 100