Version 4
SHEET 1 4472 1028
WIRE -2752 -576 -2864 -576
WIRE -2464 -576 -2672 -576
WIRE -3200 -528 -3200 -544
WIRE -2608 -496 -2704 -496
WIRE -2464 -496 -2464 -576
WIRE -2464 -496 -2544 -496
WIRE -3200 -432 -3200 -448
WIRE -2624 -400 -2624 -416
WIRE -3136 -352 -3200 -352
WIRE -3024 -352 -3056 -352
WIRE -2976 -352 -3024 -352
WIRE -2864 -352 -2864 -576
WIRE -2864 -352 -2896 -352
WIRE -2816 -352 -2864 -352
WIRE -2704 -352 -2704 -496
WIRE -2704 -352 -2736 -352
WIRE -2656 -352 -2704 -352
WIRE -3200 -336 -3200 -352
WIRE -3024 -320 -3024 -352
WIRE -2864 -320 -2864 -352
WIRE -2464 -320 -2464 -496
WIRE -2464 -320 -2512 -320
WIRE -2432 -320 -2464 -320
WIRE -2656 -288 -2720 -288
WIRE -2720 -272 -2720 -288
WIRE -3200 -240 -3200 -256
WIRE -3024 -224 -3024 -256
WIRE -2864 -224 -2864 -256
WIRE -2720 -176 -2720 -192
FLAG -3200 -432 0
FLAG -3200 -544 +V
FLAG -3200 -240 0
FLAG -2432 -320 OUT
FLAG -2864 -224 0
FLAG -3024 -224 0
FLAG -2720 -176 0
FLAG -2624 -240 0
FLAG -2624 -416 +V
FLAG -2576 -240 +V
FLAG -3200 -352 IN
SYMBOL voltage -3200 -544 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL voltage -3200 -352 R0
WINDOW 123 32 96 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 47 60 Left 2
SYMATTR Value2 AC 1
SYMATTR Value 1.5
SYMATTR InstName V3
SYMBOL LTC6261 -2624 -320 R0
SYMATTR InstName U1
SYMBOL cap -2544 -512 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 47p
SYMBOL res -2720 -368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 5.54K
SYMBOL res -2656 -592 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 15.4K
SYMBOL res -2880 -368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 7.7K
SYMBOL cap -2880 -320 R0
SYMATTR InstName C1
SYMATTR Value 470p
SYMBOL cap -3040 -320 R0
SYMATTR InstName C3
SYMATTR Value 470p
SYMBOL res -3040 -368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 7.7K
SYMBOL voltage -2720 -288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 1.5
TEXT -2808 -632 Bottom 2 ;Third Order Butterworth Filter
TEXT -2480 -144 Left 2 !.ac oct 8 1K 2Meg