Version 4
SHEET 1 880 680
WIRE 624 -176 -64 -176
WIRE 304 -112 256 -112
WIRE 624 -112 624 -176
WIRE 624 -112 384 -112
WIRE 672 -112 624 -112
WIRE 800 -112 736 -112
WIRE 624 -80 624 -112
WIRE 64 -64 32 -64
WIRE 192 -64 144 -64
WIRE 256 -64 256 -112
WIRE 256 -64 192 -64
WIRE 304 -64 256 -64
WIRE -64 -32 -64 -176
WIRE 32 -32 32 -64
WIRE 192 -32 192 -64
WIRE 304 -32 304 -64
WIRE -272 32 -272 -32
WIRE 624 32 624 0
WIRE 672 32 624 32
WIRE 800 32 736 32
WIRE 32 64 32 32
WIRE 192 64 192 48
WIRE 256 64 192 64
WIRE 304 64 304 48
WIRE 304 64 256 64
WIRE 624 64 624 32
WIRE -64 112 -64 48
WIRE 160 112 -64 112
WIRE 256 112 256 64
WIRE 400 112 256 112
WIRE 480 112 400 112
WIRE 800 112 800 32
WIRE 256 128 256 112
WIRE -272 176 -272 112
WIRE -224 176 -272 176
WIRE 96 176 -144 176
WIRE 208 176 96 176
WIRE 624 176 624 144
WIRE 400 192 400 112
WIRE -704 208 -720 208
WIRE -608 208 -640 208
WIRE -512 208 -528 208
WIRE -496 208 -512 208
WIRE -400 208 -416 208
WIRE -384 208 -400 208
WIRE -288 208 -304 208
WIRE -272 208 -288 208
WIRE -160 208 -192 208
WIRE -144 208 -160 208
WIRE -32 208 -64 208
WIRE 32 208 -32 208
WIRE 160 208 160 112
WIRE 160 208 32 208
WIRE 208 208 160 208
WIRE 480 208 480 112
WIRE 160 240 160 208
WIRE 256 240 256 224
WIRE 336 240 256 240
WIRE 32 256 32 208
WIRE 96 256 96 176
WIRE 256 256 256 240
WIRE 336 272 336 240
WIRE -720 304 -720 208
WIRE -640 304 -640 208
WIRE -592 304 -640 304
WIRE -512 304 -512 208
WIRE -512 304 -528 304
WIRE -496 304 -512 304
WIRE -400 304 -400 208
WIRE -400 304 -432 304
WIRE -384 304 -400 304
WIRE -288 304 -288 208
WIRE -288 304 -320 304
WIRE -272 304 -288 304
WIRE -160 304 -160 208
WIRE -160 304 -208 304
WIRE -144 304 -160 304
WIRE -32 304 -32 208
WIRE -32 304 -64 304
WIRE 160 320 160 304
WIRE 32 352 32 320
WIRE 96 352 96 320
WIRE 96 352 32 352
WIRE 160 352 160 320
WIRE 160 352 96 352
WIRE 256 352 256 336
WIRE 256 352 160 352
WIRE 336 352 336 336
WIRE 336 352 256 352
WIRE 400 352 400 272
WIRE 400 352 336 352
WIRE 480 352 480 272
WIRE 480 352 400 352
WIRE 256 384 256 352
WIRE 624 384 624 256
WIRE -720 432 -720 384
FLAG 256 384 0
FLAG 624 384 0
FLAG 800 112 0
FLAG 800 -112 0
FLAG -272 -32 0
FLAG -720 432 0
SYMBOL xdgnmos 208 128 R0
SYMATTR InstName U1
SYMATTR SpiceModel BF992
SYMBOL voltage 624 160 R0
SYMATTR InstName V1
SYMATTR Value 3.6
SYMBOL res 608 48 R0
SYMATTR InstName R1
SYMATTR Value 4.7
SYMBOL cap 736 16 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 1000µ
SYMBOL res 608 -96 R0
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL cap 736 -128 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 220µ
SYMBOL res 240 240 R0
SYMATTR InstName R3
SYMATTR Value 220
SYMBOL cap 320 272 R0
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL res 288 -48 R0
SYMATTR InstName R4
SYMATTR Value 4k7
SYMBOL res 400 -128 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 220
SYMBOL ind 176 -48 R0
SYMATTR InstName L1
SYMATTR Value 100µ
SYMATTR SpiceLine Rser=1
SYMBOL cap 80 256 R0
SYMATTR InstName C4
SYMATTR Value 100n
SYMBOL voltage -272 128 R180
WINDOW 0 24 104 Left 0
WINDOW 3 24 16 Left 0
SYMATTR InstName V2
SYMATTR Value {vgain}
SYMBOL res -128 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 33k
SYMBOL res 384 176 R0
SYMATTR InstName R7
SYMATTR Value 100k
SYMBOL cap -640 192 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C5
SYMATTR Value 10p
SYMBOL Misc\\signal -720 288 R0
WINDOW 123 24 132 Left 0
WINDOW 39 24 160 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 1m 10meg)
SYMATTR Value2 AC 1.
SYMATTR SpiceLine Rser=600
SYMBOL ind -512 192 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L2
SYMATTR Value .82µ
SYMBOL ind -400 192 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L3
SYMATTR Value .82µ
SYMBOL ind -288 192 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L4
SYMATTR Value .82µ
SYMBOL ind -176 192 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L5
SYMATTR Value .82µ
SYMBOL ind -48 192 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L6
SYMATTR Value 4µ7
SYMBOL cap -528 288 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C6
SYMATTR Value 3p
SYMBOL cap -432 288 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C7
SYMATTR Value 10p
SYMBOL cap -320 288 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C8
SYMATTR Value 3p
SYMBOL cap -208 288 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C9
SYMATTR Value 10p
SYMBOL res -48 288 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R8
SYMATTR Value 4k7
SYMBOL cap 16 256 R0
SYMATTR InstName C10
SYMATTR Value 3p
SYMBOL cap 464 208 R0
SYMATTR InstName C11
SYMATTR Value 3p
SYMBOL cap 16 -32 R0
SYMATTR InstName C12
SYMATTR Value 33p
SYMBOL res 160 -80 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res -80 -48 R0
SYMATTR InstName R10
SYMATTR Value 470k
SYMBOL res 144 224 R0
SYMATTR InstName R11
SYMATTR Value 270k
TEXT 136 456 Left 0 !.lib dg_nmos.lib
TEXT 136 488 Left 0 !.op
TEXT 136 520 Left 0 !.ac dec 100 100k 100meg
TEXT -696 456 Left 0 !.step param vgain list .1 .2 .4 .7 1 1.4 2