Version 4
SHEET 1 2248 760
WIRE -304 -464 -336 -464
WIRE -208 -464 -224 -464
WIRE 1120 -448 1088 -448
WIRE 1216 -448 1200 -448
WIRE -576 -336 -672 -336
WIRE -528 -336 -576 -336
WIRE -448 -336 -464 -336
WIRE -336 -336 -336 -464
WIRE -336 -336 -368 -336
WIRE -320 -336 -336 -336
WIRE -208 -320 -208 -464
WIRE -208 -320 -256 -320
WIRE -128 -320 -208 -320
WIRE 816 -320 -128 -320
WIRE 944 -320 896 -320
WIRE 1088 -320 1088 -448
WIRE 1088 -320 1008 -320
WIRE 1104 -320 1088 -320
WIRE -576 -304 -576 -336
WIRE -320 -304 -336 -304
WIRE 1216 -304 1216 -448
WIRE 1216 -304 1168 -304
WIRE 1248 -304 1216 -304
WIRE 1344 -304 1328 -304
WIRE 1104 -288 1088 -288
WIRE -336 -272 -336 -304
WIRE 1088 -256 1088 -288
WIRE -672 -224 -672 -336
WIRE 144 -208 64 -208
WIRE 320 -208 144 -208
WIRE 64 -192 64 -208
WIRE 144 -112 144 -208
WIRE 192 -112 144 -112
WIRE 320 -96 320 -208
WIRE 320 -96 256 -96
WIRE 816 -96 320 -96
WIRE 1088 -96 896 -96
WIRE 1120 -96 1088 -96
WIRE 1216 -96 1200 -96
WIRE -128 -80 -128 -320
WIRE -96 -80 -128 -80
WIRE 64 -80 64 -128
WIRE 192 -80 144 -80
WIRE -672 -64 -672 -144
WIRE -16 -32 -16 -80
WIRE 144 -32 144 -80
WIRE 1088 16 1088 -96
WIRE 1104 16 1088 16
WIRE 1216 32 1216 -96
WIRE 1216 32 1168 32
WIRE 1248 32 1216 32
WIRE 1344 32 1344 -304
WIRE 1344 32 1328 32
WIRE 1376 32 1344 32
WIRE -16 48 -16 32
WIRE 144 48 144 32
WIRE 1104 48 1088 48
WIRE -448 64 -448 32
WIRE 592 80 560 80
WIRE 1088 80 1088 48
WIRE 496 160 496 80
WIRE 544 160 496 160
WIRE 656 160 656 80
WIRE 656 160 608 160
WIRE -448 176 -448 144
WIRE -448 176 -496 176
WIRE 144 176 112 176
WIRE 240 176 224 176
WIRE 272 176 240 176
WIRE 368 176 352 176
WIRE 752 192 720 192
WIRE 848 192 832 192
WIRE 896 192 848 192
WIRE -496 208 -496 176
WIRE -448 208 -448 176
WIRE 112 208 112 176
WIRE 496 240 496 160
WIRE 528 240 496 240
WIRE 656 240 656 160
WIRE 656 240 592 240
WIRE 368 256 368 176
WIRE 368 256 112 256
WIRE 112 272 112 256
WIRE 848 304 848 192
WIRE 880 304 848 304
WIRE -448 320 -448 288
WIRE 976 320 976 192
WIRE 976 320 944 320
WIRE 992 320 976 320
WIRE 1088 320 1072 320
WIRE 1120 320 1088 320
WIRE 1216 320 1200 320
WIRE 496 336 496 240
WIRE 560 336 496 336
WIRE 656 336 656 240
WIRE 656 336 640 336
WIRE 720 336 720 192
WIRE 720 336 656 336
WIRE 768 336 720 336
WIRE 848 336 832 336
WIRE 880 336 848 336
WIRE 240 352 240 176
WIRE 272 352 240 352
WIRE 368 368 368 256
WIRE 368 368 336 368
WIRE 384 368 368 368
WIRE 496 368 496 336
WIRE 496 368 464 368
WIRE -128 384 -128 -80
WIRE -80 384 -128 384
WIRE 32 384 -16 384
WIRE 112 384 112 352
WIRE 112 384 96 384
WIRE 144 384 112 384
WIRE 224 384 208 384
WIRE 272 384 224 384
WIRE -16 416 -16 384
WIRE 224 416 224 384
WIRE 848 416 848 336
WIRE 496 432 496 368
WIRE 512 432 496 432
WIRE 1088 432 1088 320
WIRE 1104 432 1088 432
WIRE 656 448 656 336
WIRE 656 448 576 448
WIRE 1216 448 1216 320
WIRE 1216 448 1168 448
WIRE 1248 448 1216 448
WIRE 1344 448 1344 32
WIRE 1344 448 1328 448
WIRE 512 464 496 464
WIRE 1104 464 1088 464
WIRE 496 496 496 464
WIRE 1088 496 1088 464
FLAG -672 -64 0
FLAG -448 32 V+
IOPIN -448 32 In
FLAG -448 320 V-
IOPIN -448 320 In
FLAG 224 -128 V+
IOPIN 224 -128 In
FLAG 224 -64 V-
IOPIN 224 -64 In
FLAG -16 48 0
FLAG 144 48 0
FLAG -496 208 0
FLAG -16 496 0
FLAG 304 336 V+
IOPIN 304 336 In
FLAG 304 400 V-
IOPIN 304 400 In
FLAG 224 496 0
FLAG 1136 -336 V+
IOPIN 1136 -336 In
FLAG 1136 -272 V-
IOPIN 1136 -272 In
FLAG 1088 -256 0
FLAG 1136 0 V+
IOPIN 1136 0 In
FLAG 1136 64 V-
IOPIN 1136 64 In
FLAG 1088 80 0
FLAG 1136 416 V+
IOPIN 1136 416 In
FLAG 1136 480 V-
IOPIN 1136 480 In
FLAG 1088 496 0
FLAG 544 416 V+
IOPIN 544 416 In
FLAG 544 480 V-
IOPIN 544 480 In
FLAG 496 496 0
FLAG 112 208 0
FLAG 912 288 V+
IOPIN 912 288 In
FLAG 912 352 V-
IOPIN 912 352 In
FLAG 848 496 0
FLAG -288 -352 V+
IOPIN -288 -352 In
FLAG -288 -288 V-
IOPIN -288 -288 In
FLAG -336 -272 0
FLAG -576 -224 0
FLAG 1376 32 mix_-9.5dB
IOPIN 1376 32 Out
SYMBOL voltage -448 192 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL voltage -448 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL voltage -672 -240 R0
WINDOW 123 24 132 Left 0
WINDOW 39 24 160 Left 0
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=5k
SYMATTR InstName V3
SYMATTR Value SINE(0 0.1 5000)
SYMBOL Opamps\\LT1022 224 -160 R0
SYMATTR InstName U1
SYMBOL res 0 -96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 80 -96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 160 -96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL cap -32 -32 R0
SYMATTR InstName C2
SYMATTR Value 39n
SYMBOL cap 128 -32 R0
SYMATTR InstName C3
SYMATTR Value 39n
SYMBOL cap 48 -192 R0
SYMATTR InstName C4
SYMATTR Value 39n
SYMBOL cap -16 368 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C14
SYMATTR Value 3n3
SYMBOL res -32 400 R0
SYMATTR InstName R28
SYMATTR Value 10k
SYMBOL Opamps\\LT1022 304 304 R0
SYMATTR InstName U6
SYMBOL cap 208 368 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C16
SYMATTR Value 3n3
SYMBOL res 96 256 R0
SYMATTR InstName R29
SYMATTR Value 10k
SYMBOL cap 96 368 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C17
SYMATTR Value 3n3
SYMBOL res 208 400 R0
SYMATTR InstName R30
SYMATTR Value 10k
SYMBOL Opamps\\LT1022 1136 -368 R0
SYMATTR InstName U7
SYMBOL res 1216 -464 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R32
SYMATTR Value 22k
SYMBOL res 912 -336 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 12k
SYMBOL cap 1008 -336 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C5
SYMATTR Value 39n
SYMBOL Opamps\\LT1022 1136 -32 R0
SYMATTR InstName U2
SYMBOL res 1216 -112 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 22k
SYMBOL Opamps\\LT1022 1136 384 R0
SYMATTR InstName U3
SYMBOL res 1216 304 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R7
SYMATTR Value 22k
SYMBOL res 912 -112 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R8
SYMATTR Value 3k3
SYMBOL res 1344 -320 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 100k
SYMBOL res 1344 16 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R10
SYMATTR Value 100k
SYMBOL res 1344 432 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R11
SYMATTR Value 100k
SYMBOL Opamps\\LT1022 544 384 R0
SYMATTR InstName U4
SYMBOL res 656 320 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R12
SYMATTR Value 400k
SYMBOL cap 592 224 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C8
SYMATTR Value 100p
SYMBOL diode 608 144 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 496 96 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 592 96 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL res 480 352 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R13
SYMATTR Value 10k
SYMBOL res 368 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R14
SYMATTR Value 22k
SYMBOL res 240 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R15
SYMATTR Value 22k
SYMBOL Opamps\\LT1022 912 256 R0
SYMATTR InstName U5
SYMBOL res 992 176 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R16
SYMATTR Value 10k
SYMBOL cap 832 320 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C10
SYMATTR Value 10n
SYMBOL res 832 400 R0
SYMATTR InstName R17
SYMATTR Value 100k
SYMBOL res 848 176 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R18
SYMATTR Value 10k
SYMBOL res 1088 304 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R19
SYMATTR Value 12k
SYMBOL Opamps\\LT1022 -288 -384 R0
SYMATTR InstName U8
SYMBOL res -208 -480 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 12k
SYMBOL res -352 -352 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R20
SYMATTR Value 10k
SYMBOL cap -464 -352 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res -592 -320 R0
SYMATTR InstName R21
SYMATTR Value 1MEG
TEXT -144 -400 Left 0 !.ac dec 100 20 20k
TEXT 400 -448 Left 0 ;Woody (Mark Hammer, v1.1)
TEXT -144 -368 Left 0 !;tran 0.001