Version 4 SHEET 1 2228 900 WIRE 656 -224 656 -256 WIRE 1024 -144 992 -144 WIRE 1136 -144 1104 -144 WIRE 784 -128 752 -128 WIRE 880 -128 864 -128 WIRE 1360 -112 1296 -112 WIRE 1616 -112 1424 -112 WIRE 1808 -112 1760 -112 WIRE 2064 -112 1872 -112 WIRE 544 -96 496 -96 WIRE 656 -96 656 -144 WIRE 656 -96 608 -96 WIRE 656 -80 656 -96 WIRE 496 -64 496 -96 WIRE 2000 -64 2000 -144 WIRE 1520 -48 1520 -144 WIRE 1968 -48 1920 -48 WIRE 1488 -32 1472 -32 WIRE 2064 -32 2064 -112 WIRE 2064 -32 2032 -32 WIRE 2096 -32 2064 -32 WIRE 992 -16 992 -144 WIRE 1024 -16 992 -16 WIRE 1616 -16 1616 -112 WIRE 1616 -16 1552 -16 WIRE 1664 -16 1616 -16 WIRE 1760 -16 1760 -112 WIRE 1760 -16 1744 -16 WIRE 1792 -16 1760 -16 WIRE 1888 -16 1872 -16 WIRE 1968 -16 1888 -16 WIRE 752 0 752 -128 WIRE 752 0 688 0 WIRE 784 0 752 0 WIRE 1136 0 1136 -144 WIRE 1136 0 1088 0 WIRE 1184 0 1136 0 WIRE 1296 0 1296 -112 WIRE 1296 0 1264 0 WIRE 1328 0 1296 0 WIRE 1440 0 1408 0 WIRE 1488 0 1440 0 WIRE 272 16 272 -16 WIRE 432 16 400 16 WIRE 528 16 496 16 WIRE 688 16 688 0 WIRE 688 16 608 16 WIRE 880 16 880 -128 WIRE 880 16 848 16 WIRE 1024 16 880 16 WIRE 2000 16 2000 0 WIRE 656 32 656 0 WIRE 704 32 656 32 WIRE 784 32 704 32 WIRE 1520 32 1520 16 WIRE 1056 48 1056 32 WIRE 1440 48 1440 0 WIRE 1888 48 1888 -16 WIRE 656 64 656 32 WIRE 992 64 992 -16 WIRE 1920 64 1920 -48 WIRE 2064 64 2064 -32 WIRE 2064 64 1920 64 WIRE 400 80 400 16 WIRE 816 80 816 48 WIRE 1472 80 1472 -32 WIRE 1616 80 1616 -16 WIRE 1616 80 1472 80 WIRE 704 96 704 32 WIRE 272 128 272 96 WIRE 1440 144 1440 112 WIRE 1888 144 1888 112 WIRE 656 176 656 144 WIRE 704 176 704 160 WIRE 704 176 656 176 WIRE 400 224 400 160 WIRE 656 224 656 176 WIRE 992 224 992 208 FLAG 272 128 0 FLAG 816 80 0 FLAG 656 224 0 FLAG 400 224 0 FLAG 992 224 0 FLAG 1056 48 0 FLAG 1520 32 0 FLAG 2000 16 0 FLAG 496 -64 0 FLAG 656 -256 V+ FLAG 816 -16 V+ FLAG 1056 -32 V+ FLAG 272 -16 V+ FLAG 1440 144 0 FLAG 1888 144 0 FLAG 1520 -144 V+ FLAG 2000 -144 V+ FLAG 2096 -32 Out IOPIN 2096 -32 Out DATAFLAG 880 16 "" DATAFLAG 1136 0 "" DATAFLAG 752 0 "" DATAFLAG 1616 -16 "" DATAFLAG 2064 -32 "" SYMBOL voltage 400 64 R0 WINDOW 123 -101 107 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 -34 6 Left 2 WINDOW 3 22 109 Left 2 SYMATTR Value2 AC 1 0 SYMATTR InstName V1 SYMATTR Value SINE(0 12m 1k) SYMBOL cap 496 0 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 100n SYMBOL res 640 -96 R0 SYMATTR InstName R2 SYMATTR Value 100k SYMBOL res 640 48 R0 WINDOW 0 -41 45 Left 2 WINDOW 3 -54 77 Left 2 SYMATTR InstName R1 SYMATTR Value 100k SYMBOL res 1280 -16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 25 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 125 SYMBOL res 1424 -16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 5755 SYMBOL res 1760 -32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 346 SYMBOL res 1888 -32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 2090 SYMBOL cap 1424 -128 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 70nF SYMBOL cap 1456 112 R180 WINDOW 0 40 34 Left 2 WINDOW 3 33 8 Left 2 SYMATTR InstName C4 SYMATTR Value 5nF SYMBOL cap 1872 48 R0 WINDOW 3 -25 58 Left 2 WINDOW 0 -34 29 Left 2 SYMATTR Value 5nF SYMATTR InstName C5 SYMBOL cap 1872 -128 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 70nF SYMBOL voltage 272 0 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 44 Left 2 WINDOW 3 31 78 Left 2 SYMATTR Value 15 SYMATTR InstName V2 SYMBOL res 880 -144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100k SYMBOL cap 688 96 R0 SYMATTR InstName C6 SYMATTR Value 10µ SYMBOL res 1008 160 R180 WINDOW 0 34 67 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R11 SYMATTR Value 6k65 SYMBOL cap 976 144 R0 SYMATTR InstName C8 SYMATTR Value 4µ7 SYMBOL res 1120 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 20k SYMBOL res 640 -240 R0 SYMATTR InstName R13 SYMATTR Value 10k SYMBOL cap 608 -112 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C9 SYMATTR Value 1µ SYMBOL Opamps\\LT1125 816 -48 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1125 1056 -64 R0 SYMATTR InstName U2 SYMBOL Opamps\\LT1001 1520 -80 R0 SYMATTR InstName U3 SYMBOL Opamps\\LT1001 2000 -96 R0 SYMATTR InstName U4 SYMBOL res 624 0 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 1k TEXT 464 296 Left 2 !;tran 0 10m 1m TEXT 984 -320 Left 2 !.ac oct 10 10 100000