Version 4
SHEET 1 2124 2048
WIRE 512 -496 80 -496
WIRE 640 -496 592 -496
WIRE -224 -416 -304 -416
WIRE -128 -416 -144 -416
WIRE 96 -416 -128 -416
WIRE 640 -416 640 -496
WIRE 640 -416 448 -416
WIRE -304 -400 -304 -416
WIRE -128 -352 -128 -416
WIRE -32 -352 -128 -352
WIRE 96 -352 48 -352
WIRE 464 -352 448 -352
WIRE 640 -352 640 -416
WIRE 640 -352 544 -352
WIRE -304 -304 -304 -320
WIRE -128 -288 -128 -352
WIRE -112 -288 -128 -288
WIRE 96 -288 -32 -288
WIRE 544 -288 448 -288
WIRE 640 -288 640 -352
WIRE 640 -288 624 -288
WIRE 80 -224 80 -496
WIRE 96 -224 80 -224
WIRE 464 -224 448 -224
WIRE 688 -224 464 -224
WIRE 80 -160 80 -224
WIRE 96 -160 80 -160
WIRE 464 -160 464 -224
WIRE 464 -160 448 -160
WIRE 464 -96 448 -96
WIRE 560 -96 544 -96
WIRE 96 -32 64 -32
WIRE -32 32 -64 32
WIRE 96 32 48 32
WIRE 96 160 80 160
WIRE 464 160 448 160
WIRE 80 224 80 160
WIRE 96 224 80 224
WIRE 464 224 464 160
WIRE 464 224 448 224
WIRE 688 224 464 224
WIRE -112 288 -128 288
WIRE 96 288 -32 288
WIRE 544 288 448 288
WIRE 640 288 624 288
WIRE -128 352 -128 288
WIRE -32 352 -128 352
WIRE 96 352 48 352
WIRE 464 352 448 352
WIRE 640 352 640 288
WIRE 640 352 544 352
WIRE -224 416 -272 416
WIRE -128 416 -128 352
WIRE -128 416 -144 416
WIRE 96 416 -128 416
WIRE 640 416 640 352
WIRE 640 416 448 416
WIRE -272 432 -272 416
WIRE 80 496 80 224
WIRE 496 496 80 496
WIRE 640 496 640 416
WIRE 640 496 576 496
WIRE -272 528 -272 512
FLAG -64 32 0
FLAG 560 -96 0
FLAG -272 528 0
FLAG -272 416 IN2
FLAG 64 -32 0
FLAG 688 224 OUT2
FLAG -304 -304 0
FLAG -304 -416 IN1
FLAG 688 -224 OUT1
SYMBOL voltage 64 32 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 560 -96 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res -128 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL res 64 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 14K
SYMBOL res -16 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL res 448 336 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL res 528 272 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL res 480 480 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 14K
SYMBOL res -128 -400 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 20K
SYMBOL res 64 -336 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 14K
SYMBOL res -16 -272 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R9
SYMATTR Value 20K
SYMBOL res 448 -336 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R10
SYMATTR Value 20K
SYMBOL res 528 -272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 10K
SYMBOL res 608 -480 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R12
SYMATTR Value 14K
SYMBOL voltage -304 -416 R0
SYMATTR InstName V3
SYMATTR Value AC 1
SYMBOL voltage -272 416 R0
SYMATTR InstName V4
SYMATTR Value AC 1
SYMBOL FilterProducts\\LTC1068-25 272 -160 R0
SYMATTR InstName U1
SYMATTR Value Fclk=250K
TEXT 640 536 Left 2 !.ac oct 200 1K 100K