Version 4
SHEET 1 1684 1212
WIRE 16 -112 -192 -112
WIRE 208 -112 160 -112
WIRE 320 -112 272 -112
WIRE -192 -80 -192 -112
WIRE 16 -80 16 -112
WIRE 160 -16 160 -112
WIRE 160 -16 64 -16
WIRE 208 -16 160 -16
WIRE 320 -16 320 -112
WIRE 320 -16 288 -16
WIRE -192 32 -192 0
WIRE -112 96 -192 96
WIRE 16 96 16 16
WIRE 16 96 -32 96
WIRE 256 112 256 96
WIRE -192 128 -192 96
WIRE 16 128 16 96
WIRE 160 128 160 -16
WIRE 224 128 160 128
WIRE 320 144 320 -16
WIRE 320 144 288 144
WIRE 400 144 320 144
WIRE 224 160 192 160
WIRE 192 176 192 160
WIRE 256 192 256 176
WIRE -192 240 -192 208
WIRE -112 288 -192 288
WIRE 16 288 16 192
WIRE 16 288 -32 288
WIRE 64 288 16 288
WIRE 160 288 160 128
WIRE 160 288 128 288
WIRE -192 304 -192 288
WIRE 16 368 16 288
WIRE 48 368 16 368
WIRE 160 368 160 288
WIRE 160 368 128 368
WIRE -192 416 -192 384
WIRE 16 464 16 368
WIRE 48 464 16 464
WIRE 160 464 160 368
WIRE 160 464 128 464
WIRE 464 576 416 576
WIRE 576 576 528 576
WIRE -176 592 -224 592
WIRE -64 592 -112 592
WIRE 416 672 416 576
WIRE 464 672 416 672
WIRE 576 672 576 576
WIRE 576 672 544 672
WIRE -224 688 -224 592
WIRE -176 688 -224 688
WIRE -64 688 -64 592
WIRE -64 688 -96 688
WIRE 192 688 160 688
WIRE 288 688 272 688
WIRE 512 800 512 784
WIRE -128 816 -128 800
WIRE 288 816 288 688
WIRE 320 816 288 816
WIRE 416 816 416 672
WIRE 480 816 416 816
WIRE -368 832 -416 832
WIRE -320 832 -368 832
WIRE -224 832 -224 688
WIRE -224 832 -256 832
WIRE -160 832 -224 832
WIRE 576 832 576 672
WIRE 576 832 544 832
WIRE 656 832 576 832
WIRE -64 848 -64 688
WIRE -64 848 -96 848
WIRE -16 848 -64 848
WIRE 480 848 448 848
WIRE -160 864 -192 864
WIRE 448 864 448 848
WIRE -192 880 -192 864
WIRE 512 880 512 864
WIRE -128 896 -128 880
WIRE -368 912 -368 832
WIRE -336 912 -368 912
WIRE -224 912 -224 832
WIRE -224 912 -256 912
WIRE 368 912 368 880
WIRE 144 928 96 928
WIRE 192 928 144 928
WIRE 288 928 288 816
WIRE 288 928 256 928
WIRE -368 1008 -368 912
WIRE -336 1008 -368 1008
WIRE -224 1008 -224 912
WIRE -224 1008 -256 1008
WIRE 144 1008 144 928
WIRE 176 1008 144 1008
WIRE 288 1008 288 928
WIRE 288 1008 256 1008
WIRE 144 1104 144 1008
WIRE 176 1104 144 1104
WIRE 288 1104 288 1008
WIRE 288 1104 256 1104
FLAG -192 96 -5V
FLAG -192 -112 +5V
FLAG -192 416 0
FLAG -192 240 0
FLAG -192 32 0
FLAG 256 96 +5V
FLAG 256 192 -5V
FLAG 192 176 0
FLAG 400 144 out1
FLAG -128 800 +5V
FLAG -128 896 -5V
FLAG -192 880 0
FLAG -16 848 out2
FLAG -416 832 VB
FLAG -192 288 VB
FLAG 512 784 +5V
FLAG 512 880 -5V
FLAG 448 864 0
FLAG 656 832 out3
FLAG 96 928 VB
FLAG 368 912 0
FLAG 160 688 -5V
SYMBOL Opamps\\LTC6244 256 144 R0
SYMATTR InstName U1
SYMBOL diode 64 272 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value DPH
SYMBOL cap 0 128 R0
SYMATTR InstName C1
SYMATTR Value 4.7u
SYMBOL Misc\\EuropeanResistor 192 0 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL cap 208 -96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 1p
SYMBOL njf 64 -80 M0
SYMATTR InstName J1
SYMATTR Value BF862
SYMATTR Prefix X
SYMBOL voltage -192 -96 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -192 112 R0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL Misc\\EuropeanResistor -16 80 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 5k
SYMBOL voltage -192 288 R0
SYMATTR InstName VB
SYMATTR Value -2
SYMBOL Misc\\EuropeanResistor -16 272 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 5k
SYMBOL current 128 464 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 60 40 VTop 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(0u 2u 0 1n 1n 0.5m 1m)
SYMATTR Value2 AC 1u
SYMBOL Opamps\\LTC6244 -128 848 R0
SYMATTR InstName U2
SYMBOL diode -320 816 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value DPH
SYMBOL Misc\\EuropeanResistor -192 704 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL cap -176 608 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 3.5p
SYMBOL current -256 1008 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 60 40 VTop 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I2
SYMATTR Value PULSE(0u 2u 0 1n 1n 0.5m 1m)
SYMATTR Value2 AC 1u
SYMBOL Opamps\\LTC6244 512 832 R0
SYMATTR InstName U3
SYMBOL diode 192 912 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value DPH
SYMBOL Misc\\EuropeanResistor 448 688 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 1Meg
SYMBOL cap 464 592 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value 1p
SYMBOL current 256 1104 R90
WINDOW 0 -32 40 VBottom 2
WINDOW 3 32 40 VTop 2
WINDOW 123 60 40 VTop 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I3
SYMATTR Value PULSE(0u 2u 0 1n 1n 0.5m 1m)
SYMATTR Value2 AC 1u
SYMBOL npn 416 880 M270
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL Misc\\EuropeanResistor 160 1024 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 1G
SYMBOL Misc\\EuropeanResistor 32 384 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 1G
SYMBOL Misc\\EuropeanResistor -352 928 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 1G
SYMBOL Misc\\EuropeanResistor 288 672 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 4.7Meg
TEXT 120 -256 Left 2 !.model DPH D(Cjo=3n Rs=2)
TEXT -200 -288 Left 2 ;.tran 1m10m
TEXT -200 -328 Left 2 !.ac dec 100 1 1Meg
TEXT -200 -256 Left 2 !.options plotwinsize=0
TEXT -200 -368 Left 2 ;.noise V(out3) I3 dec 100 100 1Meg
TEXT -200 -400 Left 2 ;.noise V(out2) I2 dec 100 100 1Meg
TEXT -200 -432 Left 2 ;.noise V(out1) I1 dec 100 100 1Meg
TEXT -200 -472 Left 2 !.lib BF862.sub
TEXT 8 -472 Left 2 ;BF862.prm
LINE Normal 272 752 160 608 2
LINE Normal 288 608 160 752 2