Version 4
SHEET 1 2476 804
WIRE -352 -288 -352 -320
WIRE -144 -288 -144 -320
WIRE -352 -192 -352 -208
WIRE -208 -192 -352 -192
WIRE -400 -128 -496 -128
WIRE -144 -128 -144 -208
WIRE 512 -128 432 -128
WIRE 624 -128 576 -128
WIRE -352 -80 -352 -96
WIRE -208 -80 -208 -192
WIRE -688 -32 -960 -32
WIRE 432 -32 432 -128
WIRE 496 -32 432 -32
WIRE 624 -32 624 -128
WIRE 624 -32 576 -32
WIRE 736 -32 736 -128
WIRE 736 -32 624 -32
WIRE 784 -32 736 -32
WIRE -352 32 -352 0
WIRE -256 32 -352 32
WIRE -1232 64 -1232 -32
WIRE -1088 64 -1088 -32
WIRE -960 64 -960 -32
WIRE 528 128 528 48
WIRE -256 144 -256 32
WIRE -144 144 -144 -32
WIRE -144 144 -256 144
WIRE -80 144 -80 48
WIRE -80 144 -144 144
WIRE -32 144 -80 144
WIRE 112 144 48 144
WIRE 192 144 112 144
WIRE 272 144 272 64
WIRE 272 144 256 144
WIRE 320 144 272 144
WIRE 432 144 432 -32
WIRE 432 144 400 144
WIRE 496 144 432 144
WIRE -688 160 -688 -32
WIRE -608 160 -688 160
WIRE -496 160 -496 -128
WIRE -496 160 -608 160
WIRE -352 160 -352 128
WIRE 624 160 624 -32
WIRE 624 160 560 160
WIRE 496 176 448 176
WIRE -608 208 -608 160
WIRE -496 208 -496 160
WIRE 112 208 112 144
WIRE 448 208 448 176
WIRE -400 272 -400 96
WIRE -352 272 -352 240
WIRE -352 272 -400 272
WIRE -1232 320 -1232 144
WIRE -1088 320 -1088 144
WIRE -960 320 -960 144
WIRE -608 320 -608 272
WIRE -496 320 -496 288
WIRE -352 320 -352 272
WIRE 112 320 112 272
WIRE 448 320 448 288
WIRE 528 320 528 192
FLAG -1088 320 0
FLAG -1088 -32 +V
FLAG -960 320 0
FLAG -496 320 0
FLAG -1232 320 0
FLAG -1232 -32 Vref
FLAG -608 320 0
FLAG 528 320 0
FLAG 528 48 +V
FLAG 448 320 Vref
FLAG 112 320 0
FLAG -352 320 0
FLAG -352 -320 +V
FLAG -144 -320 +V
FLAG 784 -32 Out
FLAG -80 48 Stage1
FLAG 272 64 Stage2
FLAG 736 -128 Stage3
SYMBOL voltage -960 48 R0
WINDOW 123 24 124 Left 2
WINDOW 39 24 180 Left 2
WINDOW 3 24 152 Left 2
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=4.4k Cpar=13p
SYMATTR Value SINE(0.35 0.005 33k)
SYMATTR InstName V1
SYMBOL voltage -1088 48 R0
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName V2
SYMATTR Value SINE(3.3 0 1000k)
SYMBOL res -512 192 R0
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL voltage -1232 48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=1
SYMATTR InstName V3
SYMATTR Value 1.55
SYMBOL cap -624 208 R0
SYMATTR InstName C1
SYMATTR Value 22p
SYMBOL res 416 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value {Rg}
SYMBOL res 592 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value {Rf}
SYMBOL res 432 192 R0
SYMATTR InstName R9
SYMATTR Value {Rfg}
SYMBOL cap 96 208 R0
SYMATTR InstName C4
SYMATTR Value 1.2n
SYMBOL ind2 -48 160 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 390µ
SYMATTR Type ind
SYMATTR SpiceLine Ipk=450m Rser=1
SYMBOL cap 256 128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 1µ
SYMBOL cap 512 -112 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C6
SYMATTR Value 15p
SYMBOL njf -400 -192 R0
SYMATTR InstName J1
SYMATTR Value 2SK170
SYMATTR Prefix X
SYMBOL njf -400 32 R0
SYMATTR InstName J2
SYMATTR Value 2SK170
SYMATTR Prefix X
SYMBOL res -368 144 R0
SYMATTR InstName R2
SYMATTR Value 115
SYMBOL res -368 -304 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res -160 -304 R0
SYMATTR InstName R5
SYMATTR Value 50
SYMBOL pnp -208 -32 M180
SYMATTR InstName Q1
SYMATTR Value BC559C
SYMBOL res -368 -96 R0
SYMATTR InstName R3
SYMATTR Value 115
SYMBOL Opamps\\LT6202 528 160 R0
SYMATTR InstName U2
TEXT -1240 448 Left 3 !;tran 0 3m 1m
TEXT -1240 408 Left 3 !;ac oct 10 100 16000k
TEXT -824 408 Left 3 !.noise V(Vout) V1 oct 10 4k 4000k
TEXT 800 360 Left 2 !.option plotwinsize=0
TEXT 800 400 Left 2 !.option numdgt=10
TEXT -960 -144 VLeft 3 ;Microphone\n(Knowles FG-23629)
TEXT -440 -160 VLeft 3 ;JFET Buffer
TEXT -824 440 Left 3 !;noise V(Stage1) V1 oct 50 4k 4000k
TEXT 72 -144 VLeft 3 ;Notch Filter, Fc 1.5 MHz
TEXT -608 -144 VLeft 3 ;RF Low Pass, Fc = 500 kHz
TEXT 216 -144 VLeft 3 ;Audio LP
TEXT 360 -144 VLeft 3 ;1st preamp, 24 dB
TEXT 440 440 Left 2 !.lib C:\\Users\\buk\\BatDetector\\Experiments\\2SK170.txt
TEXT -200 400 Left 2 !.param Rg=470
TEXT -200 440 Left 2 !.param Rf=(Rg*20)
TEXT 80 440 Left 2 !.param Rfg=(Rf*Rg/(Rf+Rg))
TEXT 784 16 Left 2 ;... to Equalizing HP