Version 4
SHEET 1 1240 680
WIRE 128 -128 -16 -128
WIRE 320 -128 192 -128
WIRE -16 -32 -16 -128
WIRE -16 -32 -288 -32
WIRE 128 -32 -16 -32
WIRE 320 -32 320 -128
WIRE 320 -32 208 -32
WIRE -624 48 -720 48
WIRE -528 48 -624 48
WIRE -624 80 -624 48
WIRE -528 80 -528 48
WIRE -288 80 -288 -32
WIRE -288 80 -384 80
WIRE -208 80 -288 80
WIRE -112 80 -208 80
WIRE 48 80 48 64
WIRE -384 128 -384 80
WIRE -288 128 -288 80
WIRE -208 128 -208 80
WIRE -112 128 -112 80
WIRE -16 144 -16 -32
WIRE 0 144 -16 144
WIRE -720 160 -720 48
WIRE 240 176 240 144
WIRE -624 192 -624 160
WIRE -528 192 -528 144
WIRE -528 192 -624 192
WIRE -496 192 -528 192
WIRE 48 192 48 176
WIRE 128 192 48 192
WIRE 208 192 128 192
WIRE 320 208 320 -32
WIRE 320 208 272 208
WIRE 368 208 320 208
WIRE -624 224 -624 192
WIRE 48 224 48 192
WIRE 208 224 176 224
WIRE -528 240 -528 192
WIRE -384 256 -384 192
WIRE -288 256 -288 192
WIRE -288 256 -384 256
WIRE -208 256 -208 208
WIRE -208 256 -288 256
WIRE -112 256 -112 208
WIRE -112 256 -208 256
WIRE 240 272 240 240
WIRE -720 336 -720 240
WIRE -624 336 -624 304
WIRE -528 336 -528 304
WIRE -288 336 -288 256
WIRE 48 336 48 304
FLAG -624 336 0
FLAG 48 336 0
FLAG 368 208 out
IOPIN 368 208 Out
FLAG -720 336 0
FLAG 240 272 0
FLAG -288 336 0
FLAG 48 64 VB
FLAG -720 48 VB
FLAG 240 144 VB
FLAG 176 224 VB2
FLAG -496 192 VB2
FLAG -288 -32 1
FLAG 128 192 2
FLAG -528 336 0
SYMBOL diode -304 192 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMBOL current -208 128 R0
WINDOW 123 15 91 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 24 136 Left 2
SYMATTR Value2 AC 1u
SYMATTR Value ""
SYMATTR InstName I1
SYMBOL res -128 112 R0
SYMATTR InstName R1
SYMATTR Value 1G
SYMBOL cap -400 128 R0
SYMATTR InstName C1
SYMATTR Value 3.5p
SYMBOL res 224 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1Meg
SYMBOL cap 192 -144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 0.15p
SYMBOL voltage -720 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -640 64 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res -640 208 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 32 208 R0
SYMATTR InstName R6
SYMATTR Value 5k
SYMBOL Opamps\\LT6202 240 208 R0
SYMATTR InstName U2
SYMBOL njf 0 80 R0
SYMATTR InstName J1
SYMATTR Value BF862
SYMATTR Prefix X
SYMBOL cap -544 240 R0
SYMATTR InstName C3
SYMATTR Value 2.2µ
SYMBOL diode -544 144 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
TEXT -728 -136 Left 2 ;.ac oct 100 10 100Meg
TEXT -728 -168 Left 2 ;.tran 100n
TEXT -728 -200 Left 2 !.inc BF862.txt
TEXT -728 -104 Left 2 !.noise V(out) I1 dec 100 1 100Meg