Version 4
SHEET 1 2316 1924
WIRE 304 720 128 720
WIRE 912 720 384 720
WIRE 128 784 128 720
WIRE 176 784 128 784
WIRE 320 784 256 784
WIRE 480 800 448 800
WIRE 608 800 544 800
WIRE 240 816 224 816
WIRE 752 816 720 816
WIRE 880 816 816 816
WIRE 528 832 512 832
WIRE 224 848 224 816
WIRE 800 848 784 848
WIRE 16 864 -32 864
WIRE 128 864 128 784
WIRE 128 864 96 864
WIRE 192 864 128 864
WIRE 512 864 512 832
WIRE 320 880 320 784
WIRE 320 880 256 880
WIRE 352 880 320 880
WIRE 448 880 448 800
WIRE 448 880 432 880
WIRE 480 880 448 880
WIRE 784 880 784 848
WIRE 192 896 128 896
WIRE 608 896 608 800
WIRE 608 896 544 896
WIRE 624 896 608 896
WIRE 720 896 720 816
WIRE 720 896 704 896
WIRE 752 896 720 896
WIRE 480 912 448 912
WIRE 880 912 880 816
WIRE 880 912 816 912
WIRE 912 912 912 720
WIRE 912 912 880 912
WIRE 960 912 912 912
WIRE 752 928 720 928
WIRE 960 928 960 912
WIRE 224 944 224 912
WIRE 240 944 224 944
WIRE 448 944 448 912
WIRE 512 960 512 928
WIRE 528 960 512 960
WIRE 720 960 720 928
WIRE 784 976 784 944
WIRE 800 976 784 976
WIRE 128 1024 128 896
WIRE 240 1024 128 1024
WIRE 608 1024 608 896
WIRE 608 1024 320 1024
WIRE 656 1024 608 1024
WIRE 128 1040 128 1024
WIRE 128 1152 128 1120
WIRE 304 1216 128 1216
WIRE 912 1216 384 1216
WIRE 128 1280 128 1216
WIRE 176 1280 128 1280
WIRE 320 1280 256 1280
WIRE 480 1296 448 1296
WIRE 608 1296 544 1296
WIRE 240 1312 224 1312
WIRE 752 1312 720 1312
WIRE 880 1312 816 1312
WIRE 528 1328 512 1328
WIRE 224 1344 224 1312
WIRE 800 1344 784 1344
WIRE -32 1360 -32 864
WIRE 16 1360 -32 1360
WIRE 128 1360 128 1280
WIRE 128 1360 96 1360
WIRE 192 1360 128 1360
WIRE 512 1360 512 1328
WIRE 320 1376 320 1280
WIRE 320 1376 256 1376
WIRE 352 1376 320 1376
WIRE 448 1376 448 1296
WIRE 448 1376 432 1376
WIRE 480 1376 448 1376
WIRE 784 1376 784 1344
WIRE 192 1392 160 1392
WIRE 608 1392 608 1296
WIRE 608 1392 544 1392
WIRE 624 1392 608 1392
WIRE 720 1392 720 1312
WIRE 720 1392 704 1392
WIRE 752 1392 720 1392
WIRE -32 1408 -32 1360
WIRE 480 1408 448 1408
WIRE 880 1408 880 1312
WIRE 880 1408 816 1408
WIRE 912 1408 912 1216
WIRE 912 1408 880 1408
WIRE 960 1408 912 1408
WIRE 160 1424 160 1392
WIRE 752 1424 720 1424
WIRE 224 1440 224 1408
WIRE 240 1440 224 1440
WIRE 448 1440 448 1408
WIRE 512 1456 512 1424
WIRE 528 1456 512 1456
WIRE 720 1456 720 1424
WIRE 784 1472 784 1440
WIRE 800 1472 784 1472
WIRE -32 1520 -32 1488
WIRE 304 1552 240 1552
WIRE 416 1552 384 1552
WIRE 336 1584 320 1584
WIRE -240 1616 -240 1600
WIRE -128 1616 -128 1600
WIRE 336 1616 336 1584
WIRE 416 1632 416 1552
WIRE 416 1632 368 1632
WIRE 448 1632 416 1632
WIRE 608 1632 608 1392
WIRE 608 1632 528 1632
WIRE 656 1632 608 1632
WIRE 128 1648 128 1360
WIRE 240 1648 240 1552
WIRE 240 1648 208 1648
WIRE 304 1648 240 1648
WIRE 416 1664 368 1664
WIRE 416 1696 416 1664
WIRE 336 1712 336 1680
WIRE 336 1712 320 1712
WIRE -240 1728 -240 1696
WIRE -128 1728 -128 1696
FLAG 160 1424 0
FLAG -240 1728 0
FLAG -128 1728 0
FLAG -240 1600 +15
FLAG -128 1600 -15
FLAG 240 1312 +15
IOPIN 240 1312 In
FLAG 656 1632 BPF2
IOPIN 656 1632 Out
FLAG 416 1696 0
FLAG 448 1440 0
FLAG 720 1456 0
FLAG 240 1440 -15
IOPIN 240 1440 In
FLAG 528 1328 +15
IOPIN 528 1328 In
FLAG 528 1456 -15
IOPIN 528 1456 In
FLAG 800 1344 +15
IOPIN 800 1344 In
FLAG 800 1472 -15
IOPIN 800 1472 In
FLAG 320 1584 +15
IOPIN 320 1584 In
FLAG 320 1712 -15
IOPIN 320 1712 In
FLAG -32 1520 0
FLAG 240 816 +15
IOPIN 240 816 In
FLAG 656 1024 BPF1
IOPIN 656 1024 Out
FLAG 448 944 0
FLAG 720 960 0
FLAG 240 944 -15
IOPIN 240 944 In
FLAG 528 832 +15
IOPIN 528 832 In
FLAG 528 960 -15
IOPIN 528 960 In
FLAG 800 848 +15
IOPIN 800 848 In
FLAG 800 976 -15
IOPIN 800 976 In
FLAG 128 1152 0
FLAG 960 912 LPF1
IOPIN 960 912 Out
FLAG 960 1408 LPF2
IOPIN 960 1408 Out
SYMBOL res 224 1632 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL voltage -240 1600 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -128 1600 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL res 400 1200 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 -31 1 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL cap 480 1312 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 55 115 VBottom 2
SYMATTR InstName Ca
SYMATTR Value 15900p
SYMBOL res 112 1344 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL res 272 1264 R90
WINDOW 0 -4 58 VBottom 2
WINDOW 3 -28 6 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 448 1360 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Ra
SYMATTR Value 10k
SYMBOL res 720 1376 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rb
SYMATTR Value 10k
SYMBOL cap 752 1328 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 65 106 VBottom 2
SYMATTR InstName Cb
SYMATTR Value 15900p
SYMBOL voltage -32 1392 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value ""
SYMBOL res 400 1536 R90
WINDOW 0 0 26 VBottom 2
WINDOW 3 -29 85 VTop 2
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 544 1616 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 49 VTop 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL Opamps\\LT1356 224 1312 R0
SYMATTR InstName U5
SYMBOL Opamps\\LT1356 512 1328 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1356 784 1344 R0
SYMATTR InstName U1
SYMBOL Opamps\\LT1356 336 1584 M0
SYMATTR InstName U3
SYMBOL res 336 1008 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 100K
SYMBOL res 400 704 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 -31 1 VTop 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap 480 816 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 55 115 VBottom 2
SYMATTR InstName Ca1
SYMATTR Value 15900p
SYMBOL res 112 848 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL res 272 768 R90
WINDOW 0 3 56 VBottom 2
WINDOW 3 -28 -12 VTop 2
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL res 448 864 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Ra1
SYMATTR Value 10k
SYMBOL res 720 880 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rb1
SYMATTR Value 10k
SYMBOL cap 752 832 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 65 106 VBottom 2
SYMATTR InstName Cb1
SYMATTR Value 15900p
SYMBOL Opamps\\LT1356 224 816 R0
SYMATTR InstName U4
SYMBOL Opamps\\LT1356 512 832 R0
SYMATTR InstName U6
SYMBOL Opamps\\LT1356 784 848 R0
SYMATTR InstName U7
SYMBOL res 112 1024 R0
SYMATTR InstName R11
SYMATTR Value 5k
TEXT -48 1736 Left 2 !.ac oct 100 100 1000k
TEXT -240 816 Left 3 ;R8=R10\nR9=Q*R10\nR7=2*Q*R11
TEXT -272 1336 Left 3 ;R3=R4\nR1=R2=Q*R4\nR5=R6
TEXT 784 1552 Left 4 ;State Variable Biquad filter\nA=1\n2017/08/05\nedy