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 288 336 256 336 WIRE -544 352 -544 336 WIRE 896 400 896 368 WIRE 960 400 960 368 WIRE 960 400 896 400 WIRE 960 448 960 400 WIRE 256 464 256 336 WIRE 336 464 336 448 WIRE 336 464 256 464 WIRE 336 496 336 464 WIRE 128 592 128 256 WIRE 176 592 128 592 WIRE 320 592 256 592 WIRE 352 592 320 592 WIRE 448 592 432 592 WIRE 496 592 448 592 WIRE 512 592 496 592 WIRE 608 592 592 592 WIRE 688 592 688 240 WIRE 688 592 608 592 WIRE 816 608 816 592 WIRE 944 608 944 592 WIRE 320 688 320 592 WIRE 352 688 320 688 WIRE 448 688 448 592 WIRE 448 688 416 688 WIRE 496 688 496 592 WIRE 528 688 496 688 WIRE 608 688 608 592 WIRE 608 688 592 688 WIRE 816 720 816 688 WIRE 944 720 944 688 WIRE 688 736 688 592 WIRE 320 784 320 688 WIRE 352 784 320 784 WIRE 448 784 448 688 WIRE 448 784 416 784 WIRE 480 880 480 848 WIRE 688 896 688 816 WIRE 688 896 512 896 WIRE 128 912 128 592 WIRE 224 912 128 912 WIRE 384 912 304 912 WIRE 448 912 384 912 WIRE 544 928 512 928 WIRE 128 944 128 912 WIRE 688 960 688 896 WIRE 480 976 480 944 WIRE 128 1056 128 1024 WIRE 384 1072 384 912 WIRE 432 1072 384 1072 WIRE 544 1072 544 928 WIRE 544 1072 496 1072 WIRE 576 1072 544 1072 WIRE 688 1072 688 1024 WIRE 688 1072 656 1072 WIRE 128 1168 128 1136 WIRE 688 1168 688 1072 FLAG 944 720 0 FLAG 208 304 +V FLAG 944 592 +V FLAG 208 176 -V FLAG 816 720 0 FLAG 816 592 -V FLAG -48 336 0 FLAG 48 336 0 FLAG -544 352 0 FLAG -544 240 IN FLAG 480 848 -V FLAG 480 976 +V FLAG 688 1168 0 FLAG 528 80 +V FLAG 528 304 -V FLAG 336 496 -V FLAG 128 1168 0 FLAG 960 448 0 FLAG 1024 240 OUT FLAG 688 240 X1 SYMBOL voltage 944 592 R0 SYMATTR InstName V1 SYMATTR Value 18 SYMBOL voltage 816 592 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 SINE(0 5m 1k) SYMATTR Value2 AC 5m 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 480 976 R180 SYMATTR InstName U3 SYMBOL res 320 896 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 100K SYMBOL res 704 832 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R8 SYMATTR Value 1Meg SYMBOL cap 672 960 R0 SYMATTR InstName C6 SYMATTR Value 1µ SYMBOL cap 496 1056 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 1µ SYMBOL res 672 1056 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 res 480 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL res 160 608 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 336 608 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 496 608 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 1040 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 1152 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 352 704 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value 330p SYMBOL cap 352 800 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 3.9n SYMBOL cap 528 704 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value 15n SYMBOL cap 944 304 R0 SYMATTR InstName C7 SYMATTR Value 100p SYMBOL njf 288 272 R0 SYMATTR InstName J1 SYMATTR Value BF862 SYMBOL res 320 352 R0 SYMATTR InstName R2 SYMATTR Value 200 TEXT -992 528 Left 2 !.model 2N4304 D(Ron=500 Ilimit=2m) TEXT -992 496 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 -992 600 Left 2 !.noise V[out] V3 oct 20 20 20k TEXT -992 632 Left 2 !;ac dec 100 10 1000k TEXT -992 664 Left 2 !;tran 10 TEXT 824 912 Left 2 ;Is - Supply Current\nLT1115 max. 11,5 mA\nLT1097 max. 0,8 mA\nLT1097 max 10,0mA TEXT -992 576 Left 2 !;noise V[X1] V3 dec 20 20 20k TEXT -600 576 Left 2 ;Noise (G.Kraus, Seite 183)\nsiehe Funktion in plot.defs.\n.func my_NF_dB(V(inoise))\n{ 10*log10(V(inoise)*V(inoise)/(50*4*k*300)) } TEXT -1008 752 Left 2 !.MODEL J2SK170 NJF(Beta=59.86m Rs=4.151 Rd=4.151 \n + Betatce=-.5 Lambda=1.923m Vto=-.5024 \n + Vtotc=-2.5m Cgd=20p M=.3805 Pb=.4746 \n + Fc=.5 Cgs=25.48p Isr=84.77p Nr=2 Is=8.477p \n + N=1 Xti=3 Alpha=10u Vk=100 Kf=111.3E-18 Af=1) TEXT -1008 920 Left 2 !.model bf862 njf(beta=47.800m rd=.8 rs=7.5 lambda=37.3m \n+ vto=-.57093 is=424.6p cgd=7.4p pb=.5 \n+ fc=.5 cgs=8.29p kf=87.5e-18 af=1 alpha=-1m nr=2 isr=2.995p \n+ vtotc=-2m betatce=-.5 xti=3 vk=59.97 m=.6015 MFG=PHILIPS RECTANGLE Normal -1072 448 -112 32 2