Version 4
SHEET 1 880 680
WIRE 320 -432 208 -432
WIRE 320 -416 320 -432
WIRE -384 -304 -480 -304
WIRE -160 -304 -320 -304
WIRE 320 -304 320 -336
WIRE 320 -288 320 -304
WIRE -480 -224 -480 -304
WIRE -432 -224 -480 -224
WIRE -320 -224 -368 -224
WIRE -160 -224 -160 -304
WIRE -160 -224 -240 -224
WIRE 208 -208 208 -432
WIRE -272 -112 -272 -128
WIRE -160 -96 -160 -224
WIRE -160 -96 -240 -96
WIRE 208 -96 208 -128
WIRE 208 -96 -160 -96
WIRE -624 -80 -688 -80
WIRE -480 -80 -480 -224
WIRE -480 -80 -624 -80
WIRE -304 -80 -480 -80
WIRE 208 -80 208 -96
WIRE -192 -64 -240 -64
WIRE -160 -64 -192 -64
WIRE -688 -32 -688 -80
WIRE -160 -16 -160 -64
WIRE 208 16 208 0
WIRE -688 64 -688 48
WIRE -464 96 -464 80
WIRE -464 112 -464 96
FLAG -160 64 0
FLAG -624 -80 Vout
FLAG -272 -48 0
FLAG -464 192 0
FLAG -464 96 5V
FLAG -272 -128 5V
FLAG -688 64 0
FLAG -192 -64 Vref
FLAG 208 16 0
FLAG 320 -304 5V
SYMBOL voltage -160 -32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL res 192 -224 R0
SYMATTR InstName R1
SYMATTR Value 2.6k
SYMBOL res -224 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 47.6k
SYMBOL cap -368 -240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 858p
SYMBOL Opamps\\LTC6247 -272 -80 M0
SYMATTR InstName U2
SYMBOL voltage -464 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5V
SYMBOL cap -320 -320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 22p
SYMBOL res -704 -48 R0
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL voltage 320 -432 R0
WINDOW 123 24 44 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value ""
SYMBOL res 192 -96 R0
SYMATTR InstName R4
SYMATTR Value 2.6k
TEXT -288 168 Left 2 !.ac dec 10 100 10meg