Version 4 SHEET 1 1692 1188 WIRE 528 96 528 80 WIRE 528 96 512 96 WIRE 544 96 528 96 WIRE 544 112 544 96 WIRE 208 208 208 176 WIRE 512 208 512 96 WIRE 544 208 544 192 WIRE -448 224 -544 224 WIRE -48 224 -368 224 WIRE 48 224 -48 224 WIRE 176 224 48 224 WIRE -544 240 -544 224 WIRE -48 240 -48 224 WIRE 48 240 48 224 WIRE 336 240 240 240 WIRE 384 240 336 240 WIRE 496 240 464 240 WIRE 688 240 560 240 WIRE 736 240 688 240 WIRE 896 240 816 240 WIRE 960 240 896 240 WIRE 1024 240 960 240 WIRE -544 256 -544 240 WIRE 176 256 128 256 WIRE 336 272 336 240 WIRE 896 288 896 240 WIRE 208 304 208 272 WIRE 528 304 528 272 WIRE 960 304 960 240 WIRE -48 336 -48 320 WIRE 48 336 48 304 WIRE -544 352 -544 336 WIRE 336 368 336 336 WIRE 896 400 896 368 WIRE 960 400 960 368 WIRE 960 400 896 400 WIRE 960 448 960 400 WIRE 128 496 128 256 WIRE 176 496 128 496 WIRE 320 496 256 496 WIRE 352 496 320 496 WIRE 448 496 432 496 WIRE 496 496 448 496 WIRE 512 496 496 496 WIRE 608 496 592 496 WIRE 688 496 688 240 WIRE 688 496 608 496 WIRE -544 576 -544 560 WIRE -416 576 -416 560 WIRE 320 592 320 496 WIRE 352 592 320 592 WIRE 448 592 448 496 WIRE 448 592 416 592 WIRE 496 592 496 496 WIRE 528 592 496 592 WIRE 608 592 608 496 WIRE 608 592 592 592 WIRE 688 640 688 496 WIRE -544 688 -544 656 WIRE -416 688 -416 656 WIRE 320 688 320 592 WIRE 352 688 320 688 WIRE 448 688 448 592 WIRE 448 688 416 688 WIRE 480 784 480 752 WIRE 688 800 688 720 WIRE 688 800 512 800 WIRE 128 816 128 496 WIRE 224 816 128 816 WIRE 384 816 304 816 WIRE 448 816 384 816 WIRE 544 832 512 832 WIRE 128 848 128 816 WIRE 688 864 688 800 WIRE 480 880 480 848 WIRE 128 960 128 928 WIRE 384 976 384 816 WIRE 432 976 384 976 WIRE 544 976 544 832 WIRE 544 976 496 976 WIRE 576 976 544 976 WIRE 688 976 688 928 WIRE 688 976 656 976 WIRE 128 1072 128 1040 WIRE 688 1072 688 976 FLAG -416 688 0 FLAG 208 304 +V FLAG -416 560 +V FLAG 208 176 -V FLAG -544 688 0 FLAG -544 560 -V FLAG -48 336 0 FLAG 48 336 0 FLAG -544 352 0 FLAG -544 240 IN FLAG 480 752 -V FLAG 480 880 +V FLAG 688 1072 0 FLAG 528 80 +V FLAG 528 304 -V FLAG 336 368 -V FLAG 128 1072 0 FLAG 960 448 0 FLAG 1024 240 OUT SYMBOL voltage -416 560 R0 SYMATTR InstName V1 SYMATTR Value 18 SYMBOL voltage -544 560 R0 SYMATTR InstName V2 SYMATTR Value -18 SYMBOL opamps\\LT1115 208 304 M180 WINDOW 0 8 96 Left 2 WINDOW 3 13 28 Left 2 SYMATTR InstName U1 SYMBOL cap 32 240 R0 SYMATTR InstName C1 SYMATTR Value 47p SYMBOL res -64 224 R0 SYMATTR InstName R1 SYMATTR Value 47.5K SYMBOL voltage -544 240 R0 WINDOW 3 24 152 Left 2 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value PULSE(0 5m 1m 100n 100n 100) SYMATTR Value2 AC 35m SYMATTR InstName V3 SYMBOL res -352 208 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName Ri SYMATTR Value 450 SYMBOL Opamps\\LT1097 480 880 R180 SYMATTR InstName U3 SYMBOL res 320 800 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 100K SYMBOL res 704 736 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R8 SYMATTR Value 1Meg SYMBOL cap 672 864 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL cap 496 960 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL res 672 960 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 1Meg SYMBOL opamps\\LT1010 528 176 R0 SYMATTR InstName U2 SYMBOL res 528 96 R0 SYMATTR InstName R4 SYMATTR Value 49.9 SYMBOL diode 320 272 R0 SYMATTR InstName D1 SYMATTR Value 2N4304 SYMBOL res 480 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL res 160 512 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 499 SYMATTR SpiceLine tol=0.1 SYMBOL res 336 512 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R6 SYMATTR Value 17.8k SYMATTR SpiceLine tol=0.1 SYMBOL res 496 512 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 210k SYMATTR SpiceLine tol=0.1 SYMBOL res 720 256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R13 SYMATTR Value 562 SYMBOL res 912 384 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R14 SYMATTR Value 25k SYMBOL res 144 944 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R10 SYMATTR Value 22.6 SYMATTR SpiceLine tol=0.1 SYMBOL res 144 1056 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R11 SYMATTR Value 210 SYMATTR SpiceLine tol=0.1 SYMBOL cap 352 608 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 330p SYMBOL cap 352 704 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 3.9n SYMBOL cap 528 608 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C6 SYMATTR Value 15n SYMBOL cap 944 304 R0 SYMATTR InstName C7 SYMATTR Value 3.9n TEXT -552 752 Left 2 !.noise V[x1] V3 oct 20 20 20k TEXT -552 816 Left 2 !.model 2N4304 D(Ron=500 Ilimit=2m) TEXT -552 784 Left 2 !.options gminsteps=0 TEXT -992 128 Left 2 ;Grado Labs\nReference Platinum\nMM - Tonabnehmer\n-------------------------------\nAusgangsspannung 5,0 mV\nInduktivität 45 mH\nEigenimpendanz 450 Ohm\noptimale Eingangsimpendanz 47 K TEXT -552 888 Left 2 ;.noise V[out] V3 oct 20 20 20k TEXT -544 920 Left 2 ;.ac oct 100 10 1000k TEXT -544 984 Left 2 ;.tran 100 TEXT -536 1016 Left 2 ;PULSE(0 5m 1m 100n 100n 100) TEXT 936 656 Left 2 ;Is - Supply Current\nLT1115 max. 11,5 mA\nLT1097 max. 0,8 mA RECTANGLE Normal -1072 448 -112 32 2