Version 4
SHEET 1 1476 1328
WIRE 256 -128 48 -128
WIRE 512 -128 336 -128
WIRE 704 -128 512 -128
WIRE 112 0 96 0
WIRE 480 0 464 0
WIRE -80 64 -96 64
WIRE 48 64 48 -128
WIRE 48 64 0 64
WIRE 112 64 48 64
WIRE 544 64 464 64
WIRE 704 64 704 -128
WIRE 704 64 624 64
WIRE -256 128 -320 128
WIRE -96 128 -96 64
WIRE -96 128 -112 128
WIRE 0 128 -96 128
WIRE 112 128 80 128
WIRE 608 128 464 128
WIRE 704 128 704 64
WIRE 704 128 688 128
WIRE -320 144 -320 128
WIRE -96 192 -96 128
WIRE 112 192 -96 192
WIRE 512 192 512 -128
WIRE 512 192 464 192
WIRE -320 240 -320 224
WIRE 96 256 96 0
WIRE 112 256 96 256
WIRE 480 256 480 0
WIRE 480 256 464 256
WIRE 656 256 480 256
WIRE 112 320 96 320
WIRE 512 320 464 320
WIRE 544 320 512 320
WIRE 624 320 608 320
WIRE 80 384 -32 384
WIRE 112 384 80 384
WIRE 480 384 464 384
WIRE -32 400 -32 384
WIRE 512 416 512 320
WIRE 608 416 512 416
WIRE 512 432 512 416
WIRE 608 432 608 416
WIRE 80 448 80 384
WIRE 112 448 80 448
WIRE 480 448 464 448
WIRE -32 496 -32 480
WIRE 608 528 608 512
WIRE 80 672 80 448
WIRE 512 672 512 512
WIRE 512 672 80 672
FLAG -32 496 0
FLAG -320 240 0
FLAG 656 256 OUT
FLAG 96 320 0
FLAG 480 384 0
FLAG 480 448 0
FLAG 608 528 0
FLAG 624 320 0
FLAG -320 128 IN
SYMBOL voltage -32 384 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 96 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 2K
SYMBOL res -96 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 59 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 3.16K
SYMBOL voltage -320 128 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR InstName V3
SYMATTR Value AC 1
SYMBOL res 16 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 59 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 352 -144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 59 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 3.16K
SYMBOL res 640 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 59 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL res 704 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 59 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 2K
SYMBOL LTC1060 288 256 R0
SYMATTR InstName U1
SYMATTR Value fclka=17.5K fclkb=17.5K
SYMATTR Value2 divider=100
SYMBOL cap -192 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL res 496 416 R0
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL res 592 416 R0
SYMATTR InstName R8
SYMATTR Value 1K
SYMBOL cap 608 304 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .1µ
TEXT 616 584 Left 2 !.ac lin 500 100 250