Version 4 SHEET 1 1048 744 WIRE 176 -64 160 -64 WIRE 272 -64 256 -64 WIRE 352 -64 336 -64 WIRE 448 -64 432 -64 WIRE 480 -64 448 -64 WIRE 272 -32 272 -64 WIRE 480 -32 480 -64 WIRE 336 16 336 -64 WIRE 448 16 448 -64 WIRE 448 16 400 16 WIRE 0 64 -64 64 WIRE 144 64 64 64 WIRE -64 80 -64 64 WIRE 336 80 336 16 WIRE 272 128 224 128 WIRE 368 176 336 176 WIRE -64 192 -64 160 WIRE 128 192 -64 192 WIRE 128 208 128 192 WIRE 144 208 144 64 WIRE 160 208 160 -64 WIRE 112 224 96 224 WIRE 224 240 224 128 WIRE 224 240 176 240 WIRE 256 240 224 240 WIRE 368 240 368 176 WIRE 368 240 336 240 WIRE 448 240 368 240 WIRE 560 240 448 240 WIRE 656 240 560 240 WIRE 720 240 656 240 WIRE -80 256 -128 256 WIRE 48 256 0 256 WIRE 112 256 48 256 WIRE -128 288 -128 256 WIRE 448 288 448 240 WIRE 560 288 560 240 WIRE 48 304 48 256 WIRE 368 304 368 240 WIRE 368 304 336 304 WIRE 656 336 656 240 WIRE 224 352 224 240 WIRE 272 352 224 352 WIRE 448 384 448 368 WIRE 448 384 400 384 WIRE 448 400 448 384 WIRE 560 416 560 368 WIRE 96 432 96 224 WIRE 400 432 400 384 WIRE 400 432 96 432 WIRE -128 496 -128 368 WIRE 48 496 48 368 WIRE 48 496 -128 496 WIRE 240 496 48 496 WIRE 416 496 240 496 WIRE 448 496 448 480 WIRE 448 496 416 496 WIRE 560 496 560 480 WIRE 560 496 448 496 WIRE 656 496 656 416 WIRE 656 496 560 496 WIRE -128 528 -128 496 WIRE 336 544 336 400 WIRE 416 544 416 496 WIRE 416 544 400 544 WIRE 144 608 144 272 WIRE 160 608 144 608 WIRE 240 608 240 496 WIRE 336 608 336 544 WIRE 416 608 416 544 FLAG -128 528 0 FLAG 720 240 OUT FLAG 480 -32 0 FLAG 272 -32 0 SYMBOL Misc\\EuropeanResistor 16 240 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 4k7 SYMATTR SpiceLine tol=2 pwr=125m SYMBOL Misc\\EuropeanResistor -80 64 R0 SYMATTR InstName R2 SYMATTR Value 8k2 SYMATTR SpiceLine tol=2 pwr=125m SYMBOL Misc\\EuropeanResistor 352 224 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 27 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100 SYMATTR SpiceLine tol=2 pwr=500m SYMBOL Misc\\EuropeanResistor 432 272 R0 SYMATTR InstName R4 SYMATTR Value {RGain} SYMATTR SpiceLine tol=2 pwr=250m SYMBOL Misc\\EuropeanResistor 432 384 R0 SYMATTR InstName R5 SYMATTR Value 2k2 SYMATTR SpiceLine tol=2 pwr=250m SYMBOL Misc\\EuropeanResistor 640 320 R0 SYMATTR InstName R6 SYMATTR Value {ROUT} SYMBOL Misc\\EuropeanPolcap 336 32 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value 1000µ SYMATTR SpiceLine V=25 SYMBOL Misc\\EuropeanPolcap 400 528 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 1000µ SYMATTR SpiceLine V=25 SYMBOL Misc\\EuropeanCap 64 48 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value 27p SYMBOL Misc\\EuropeanCap 544 416 R0 SYMATTR InstName C4 SYMATTR Value 22n SYMATTR SpiceLine V=40 SYMBOL Misc\\EuropeanCap 32 304 R0 WINDOW 3 -65 30 Left 2 SYMATTR Value 330p SYMATTR InstName C5 SYMATTR SpiceLine V=50 SYMBOL npn2 272 80 R0 SYMATTR InstName Q1 SYMATTR Value BD135/ON SYMBOL pnp2 272 400 M180 SYMATTR InstName Q2 SYMATTR Value BD136/ON SYMBOL Misc\\EuropeanResistor 544 272 R0 SYMATTR InstName R7 SYMATTR Value 47 SYMATTR SpiceLine tol=2 pwr=250m SYMBOL voltage -128 272 R0 WINDOW 123 24 132 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value2 AC 1 SYMATTR InstName V1 SYMATTR Value SINE(0 775m {Fin}) SYMBOL voltage 160 -64 R270 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL voltage 256 608 R90 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 15 SYMBOL voltage 336 -64 R270 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value 12 SYMBOL voltage 432 608 R90 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V5 SYMATTR Value 12 SYMBOL NE5534 144 176 R0 SYMATTR InstName U1 TEXT 432 192 Left 2 ;Gain=R4/R5+1 TEXT -448 -16 Left 2 !.tran 10m TEXT -456 -104 Left 2 !.meas total_output_refered_rms_noise INTEG V(onoise)\n.meas total_input_refered_rms_noise INTEG V(inoise) TEXT -448 32 Left 2 !;noise V(out) V1 oct 100 1 1000K TEXT -448 80 Left 2 !;.ac oct 10 1 10Meg TEXT -448 136 Left 2 !;.step temp -55 125 10 TEXT -784 184 Left 2 !.MEAS AC tmp max mag(V(out))\n.MEAS AC BW3dB[Hz] trig mag(V(out))=tmp/sqrt(2) rise=1\n + targ mag(V(out))=tmp/sqrt(2) fall=last\n.meas AC f_upper[Hz] when V(out)=1/sqrt(2) fall=last\n.meas AC total_gain max(V(OUT)/V(IN)) \n.meas tran Pout_rms rms V(out)*i(R6)\n;.meas AC gain FIND max V(OUT)\n.net I(R6) V1\n; Rin & Rout determined from V2 and Rout TEXT -384 576 Left 2 !.four 100Hz 7 V(out)\n.four 1kHz 7 V(out)\n.four 10kHz 7 V(out)\n.four 20kHz 7 V(out) \n .four 1K I(R6)\n.option plotwinsize=0 TEXT -792 448 Left 2 !.step param RGain list 2k2 8k6 11k\n.step param ROUT list 8 4\n.step param Fin list 100 1k 20k\n;.step param Cr list 10u 22u 33u 47u 100u TEXT 432 96 Left 2 ;Gain: 2 (R4=2k2), 3 (4k4), 4 (6k6), 5 (8k8), 6 (11k) TEXT 432 128 Left 2 ;Rout: min 4 Ohm TEXT 432 64 Left 2 ;BW: DC ... 20kHz (2dB) TEXT 432 160 Left 2 ;Noise (output): 24 ... 76 nV/Hz*1/2 TEXT 672 208 Left 2 ;Uout: max +/-5V TEXT 672 272 Left 2 ;Uin: max 775mV