Version 4 SHEET 1 1996 3564 WIRE -592 688 -656 688 WIRE -512 688 -592 688 WIRE -448 688 -512 688 WIRE -400 688 -448 688 WIRE -384 688 -400 688 WIRE -304 688 -320 688 WIRE -272 688 -304 688 WIRE -192 688 -272 688 WIRE -112 688 -192 688 WIRE -16 688 -112 688 WIRE -512 704 -512 688 WIRE -448 704 -448 688 WIRE -272 704 -272 688 WIRE -192 704 -192 688 WIRE -400 736 -400 688 WIRE -384 736 -400 736 WIRE -304 736 -304 688 WIRE -304 736 -320 736 WIRE -512 768 -592 768 WIRE -448 768 -512 768 WIRE -352 768 -448 768 WIRE -272 768 -352 768 WIRE -192 768 -272 768 WIRE -112 768 -192 768 WIRE -1120 880 -1120 832 WIRE -1024 944 -1072 944 WIRE -1120 1072 -1120 1056 WIRE -1168 1104 -1200 1104 WIRE -256 1136 -288 1136 WIRE -112 1136 -176 1136 WIRE -48 1136 -112 1136 WIRE 112 1136 32 1136 WIRE -1200 1184 -1200 1104 WIRE -1120 1184 -1120 1152 WIRE -1120 1184 -1200 1184 WIRE -288 1184 -288 1136 WIRE -1120 1216 -1120 1184 WIRE -1024 1216 -1024 944 WIRE -1024 1216 -1120 1216 WIRE -768 1216 -800 1216 WIRE -656 1216 -688 1216 WIRE -560 1216 -656 1216 WIRE -448 1216 -480 1216 WIRE -112 1232 -112 1136 WIRE -32 1232 -112 1232 WIRE -800 1248 -800 1216 WIRE 112 1248 112 1136 WIRE 112 1248 32 1248 WIRE -32 1264 -112 1264 WIRE -656 1328 -656 1216 WIRE -592 1328 -656 1328 WIRE -448 1344 -448 1216 WIRE -448 1344 -528 1344 WIRE 112 1344 112 1248 WIRE 176 1344 112 1344 WIRE 240 1344 176 1344 WIRE 416 1344 320 1344 WIRE 464 1344 416 1344 WIRE -1024 1360 -1024 1216 WIRE -816 1360 -1024 1360 WIRE -592 1360 -816 1360 WIRE -448 1360 -448 1344 WIRE -304 1360 -304 1344 WIRE -304 1360 -448 1360 WIRE -256 1360 -304 1360 WIRE -112 1360 -112 1264 WIRE -112 1360 -176 1360 WIRE -1024 1392 -1024 1360 WIRE -1024 1392 -1040 1392 WIRE -1040 1440 -1056 1440 WIRE -1024 1440 -1040 1440 WIRE 416 1440 416 1344 WIRE -304 1456 -304 1360 WIRE -256 1456 -304 1456 WIRE -128 1456 -176 1456 WIRE -32 1456 -128 1456 WIRE 112 1456 48 1456 WIRE -1024 1488 -1024 1440 WIRE -1024 1488 -1040 1488 WIRE -816 1488 -816 1360 WIRE -128 1552 -128 1456 WIRE -32 1552 -128 1552 WIRE 112 1568 112 1456 WIRE 112 1568 32 1568 WIRE 240 1568 112 1568 WIRE 416 1568 416 1504 WIRE 416 1568 320 1568 WIRE 464 1568 416 1568 WIRE -32 1584 -128 1584 WIRE -432 1600 -432 1536 WIRE -432 1600 -512 1600 WIRE -1024 1616 -1024 1488 WIRE -816 1616 -816 1568 WIRE -800 1616 -816 1616 WIRE -640 1616 -720 1616 WIRE -576 1616 -640 1616 WIRE -432 1632 -512 1632 WIRE -128 1632 -128 1584 WIRE -816 1648 -816 1616 WIRE -640 1712 -640 1616 WIRE -624 1712 -640 1712 WIRE -432 1712 -432 1632 WIRE -432 1712 -560 1712 WIRE -416 1712 -432 1712 WIRE 176 1712 176 1344 WIRE 176 1712 -336 1712 WIRE -816 1744 -816 1728 WIRE -352 1840 -864 1840 WIRE -192 1840 -352 1840 WIRE -112 1840 -192 1840 WIRE -16 1840 -112 1840 WIRE 192 1856 80 1856 WIRE -192 1936 -192 1840 WIRE 80 1936 80 1856 WIRE -352 1952 -352 1840 WIRE -112 1952 -112 1840 WIRE -16 1952 -16 1840 WIRE 32 1952 -16 1952 WIRE 32 2000 -16 2000 WIRE 80 2032 80 2016 WIRE -352 2112 -352 2016 WIRE -352 2112 -864 2112 WIRE -192 2112 -192 2016 WIRE -192 2112 -352 2112 WIRE -112 2112 -112 2016 WIRE -112 2112 -192 2112 WIRE -16 2112 -16 2000 WIRE -16 2112 -112 2112 WIRE 80 2128 80 2112 FLAG -560 1312 V+ FLAG -560 1376 V- FLAG -1120 832 V+ IOPIN -1120 832 BiDir FLAG -304 1344 out FLAG -544 1648 V+ FLAG -544 1584 V- FLAG -432 1536 0 FLAG -352 768 0 FLAG -656 688 V+ IOPIN -656 688 BiDir FLAG -16 688 V- IOPIN -16 688 BiDir FLAG 0 1536 V+ FLAG 0 1600 V- FLAG 0 1216 V+ FLAG 0 1280 V- FLAG 464 1568 cold IOPIN 464 1568 Out FLAG 464 1344 hot IOPIN 464 1344 Out FLAG 192 1856 vista IOPIN 192 1856 Out FLAG -816 1360 in FLAG -1024 1616 V- IOPIN -1024 1616 BiDir FLAG -864 1840 hot IOPIN -864 1840 Out FLAG -864 2112 cold IOPIN -864 2112 Out FLAG 80 2128 0 FLAG -288 1184 0 FLAG -128 1632 0 FLAG -800 1248 0 FLAG -816 1744 0 SYMBOL res -784 1232 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R6 SYMATTR Value 100 SYMBOL res -576 1232 R270 WINDOW 0 23 -9 VTop 0 WINDOW 3 3 11 VBottom 0 SYMATTR InstName R5 SYMATTR Value 8k SYMBOL res -432 1696 M90 WINDOW 0 -33 65 VBottom 0 WINDOW 3 -31 64 VTop 0 SYMATTR InstName R7 SYMATTR Value 1meg SYMBOL cap -560 1728 M270 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C1 SYMATTR Value 1µ SYMATTR SpiceLine Lser=2n SYMBOL res -816 1632 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL voltage -112 672 R0 WINDOW 3 24 104 Invisible 0 WINDOW 123 24 36 Left 0 SYMATTR Value {-{suply}} SYMATTR SpiceLine Rser=1m Cpar=10p SYMATTR InstName V3 SYMBOL voltage -592 672 R0 WINDOW 3 24 104 Invisible 0 WINDOW 123 24 36 Left 0 SYMATTR Value {suply} SYMATTR SpiceLine Rser=1m Cpar=10p SYMATTR InstName V4 SYMBOL res -48 1472 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R9 SYMATTR Value 22k SYMBOL res -272 1472 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R8 SYMATTR Value 220 SYMBOL res -64 1152 R270 WINDOW 0 22 114 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R10 SYMATTR Value 22k SYMBOL res -160 1120 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R11 SYMATTR Value 225 SYMBOL electrecmic -1152 1408 R0 SYMATTR InstName U2 SYMATTR SpiceLine frec={frec} dBSPL={dBSPL} Sens=-36 Rload=1k SYMATTR SpiceModel emic1 SYMBOL res 224 1584 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R13 SYMATTR Value 68 SYMBOL res 224 1360 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R12 SYMATTR Value 68 SYMBOL polcap -528 704 R0 SYMATTR InstName C4 SYMATTR Value 100µ SYMATTR SpiceLine V=6 Irms=0 Rser=0.15 MTBF=0 Lser=2n ppPkg=0 SYMBOL polcap -176 768 R180 WINDOW 0 24 57 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C9 SYMATTR Value 100µ SYMATTR SpiceLine V=6 Irms=0 Rser=0.15 MTBF=0 Lser=2n ppPkg=0 SYMBOL cap -384 704 R270 WINDOW 0 -12 11 VTop 0 WINDOW 3 5 58 VBottom 0 SYMATTR InstName C6 SYMATTR Value 100n SYMATTR SpiceLine Lser=2n SYMBOL cap -384 752 R270 WINDOW 0 -21 15 VTop 0 WINDOW 3 6 53 VBottom 0 SYMATTR InstName C7 SYMATTR Value 100n SYMATTR SpiceLine Lser=2n SYMBOL cap -464 704 R0 WINDOW 0 26 16 Left 0 SYMATTR InstName C5 SYMATTR Value 1µ SYMATTR SpiceLine V=10 Irms=0 Rser=0.009 MTBF=0 Lser=2n ppPkg=1 SYMBOL cap -288 704 R0 SYMATTR InstName C8 SYMATTR Value 1µ SYMATTR SpiceLine V=10 Irms=0 Rser=0.009 MTBF=0 Lser=2n ppPkg=1 SYMBOL Opamps\\opamp2 -560 1280 R0 WINDOW 3 16 52 Left 0 SYMATTR Value MC33079 SYMATTR InstName U7 SYMBOL Opamps\\opamp2 0 1184 R0 SYMATTR InstName U8 SYMATTR Value MC33079 SYMBOL Opamps\\opamp2 0 1504 R0 SYMATTR InstName U9 SYMATTR Value MC33079 SYMBOL Opamps\\opamp2 -544 1680 R180 SYMATTR InstName U10 SYMATTR Value MC33079 SYMBOL cap 400 1440 R0 SYMATTR InstName C10 SYMATTR Value 1n SYMATTR SpiceLine Lser=2n SYMBOL res -832 1632 R0 SYMATTR InstName R2 SYMATTR Value 22 SYMBOL res -832 1472 R0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL res -1104 960 M0 SYMATTR InstName R1 SYMATTR Value 4.7k SYMBOL njf -1072 880 M0 SYMATTR InstName J1 SYMATTR Value 2N3819 SYMBOL potentiometer -1104 1168 R180 SYMATTR InstName U3 SYMATTR Value Rt=50 set=.017 SYMBOL res -208 1920 R0 SYMATTR InstName Rinput SYMATTR Value 1meg SYMBOL cap -128 1952 R0 SYMATTR InstName Cinput SYMATTR Value 20p SYMBOL e 80 1920 R0 SYMATTR InstName E1 SYMATTR Value 1 SYMBOL cap -368 1952 R0 SYMATTR InstName Ccable SYMATTR Value 40p SYMBOL res 64 2016 R0 SYMATTR InstName R14 SYMATTR Value 10k SYMBOL res -272 1376 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R15 SYMATTR Value 220 TEXT -360 1016 Left 0 !;tran 0 4m 100u TEXT -360 992 Left 0 !.ac dec 1000 1 100k TEXT -360 1040 Left 0 !.fourier 4k V(vista) TEXT -112 1000 Left 0 !.param frec=4k suply=6 dBSPL=94 TEXT -104 1040 Left 0 ;.step param suply list 6 12 TEXT -360 976 Left 0 !.option noopiter TEXT -112 976 Left 0 !;noise V(vista) V3 dec 1000 1m 1meg TEXT -608 1008 Center 0 ;Ajustar con potenciómetro\nhasta anular la componente \nde continua en OUT TEXT 576 1008 Left 0 !* MC33079 operational amplifier\n*"macromodel" subcircuit\n*\n* connections:\n*\n.subckt MC33079 1 2 3 4 5\n*\n c1 11 12 3.501E-12\n c2 6 7 10.00E-12\n dc 5 53 dx\n de 54 5 dx\n dlp 90 91 dx\n dln 92 90 dx\n dp 4 3 dx\n egnd 99 0 poly(2) (3,0) (4,0) 0 .5 .5\n fb 7 99 poly(5) vb vc ve vlp vln 0 27.96E6\n+ -30E6 30E6 30E6 -30E6\n ga 6 0 11 12 565.5E-6\n gcm 0 6 10 99 5.655E-9\n iss 10 4 dc 70.00E-6\n hlim 90 0 vlim 1K\n j1 11 2 10 jx\n j2 12 1 10 jx\n r2 6 9 100.0E3\n rd1 3 11 1.768E3\n rd2 3 12 1.768E3\n ro1 8 5 10\n ro2 7 99 20\n rp 3 4 29.03E3\n rss 10 99 2.857E6\n vb 9 0 dc 0\n vc 3 53 dc .9\n ve 54 4 dc .4\n vlim 7 8 dc 0\n vlp 91 0 dc 30\n vln 0 92 dc 30\n.model dx D(Is=800.0E-18)\n.model jx NJF(Is=150.0E-9 Beta=4.568E-3\n+ Vto=-1)\n.ends TEXT -376 632 Left 0 ;SUPPLY TEXT -112 2152 Left 0 ;Diferential channel A/D input or osciloscope TEXT -672 1488 Left 0 ;DC SERVO TEXT -1368 728 Left 0 ;Current Supply: match emic capsule type with potentimeter LINE Normal -304 1360 -304 1360 LINE Normal -720 1056 -1072 1072 4 LINE Normal -496 1072 -304 1360 4 RECTANGLE Normal -496 1072 -720 992 2 RECTANGLE Normal 32 848 -736 608 RECTANGLE Normal 352 2176 -240 1776 RECTANGLE Normal -320 1792 -848 1456 2 RECTANGLE Normal -928 1264 -1360 752 2 CIRCLE Normal -1056 1056 -1216 1168 2