Version 4
SHEET 1 2580 1252
WIRE 176 0 128 0
WIRE 352 0 256 0
WIRE 528 0 480 0
WIRE 656 0 608 0
WIRE -320 64 -368 64
WIRE -128 64 -240 64
WIRE 352 80 352 0
WIRE 480 80 480 0
WIRE 704 80 704 48
WIRE -128 128 -128 64
WIRE 240 128 -128 128
WIRE 704 160 704 144
WIRE 704 160 592 160
WIRE 240 176 -128 176
WIRE -320 240 -368 240
WIRE -128 240 -128 176
WIRE -128 240 -240 240
WIRE 96 240 64 240
WIRE 192 240 160 240
WIRE 240 240 192 240
WIRE 704 240 592 240
WIRE 704 256 704 240
WIRE -64 304 -96 304
WIRE 240 304 16 304
WIRE 704 336 704 320
WIRE 240 368 176 368
WIRE 176 432 176 368
WIRE 416 448 416 416
WIRE 176 528 176 512
WIRE -144 624 -144 608
WIRE 416 624 416 608
WIRE -144 720 -144 704
WIRE 416 720 416 704
FLAG 416 448 0
FLAG 704 336 0
FLAG -368 240 0
FLAG -96 304 0
FLAG -144 720 0
FLAG 416 720 0
FLAG 416 608 sclk2
FLAG -144 608 sclk1
FLAG 176 528 0
FLAG -368 64 0
FLAG 128 0 0
FLAG 656 0 0
FLAG 704 240 OUT
FLAG 704 48 0
FLAG 64 240 0
FLAG 192 240 REFin
SYMBOL voltage 272 0 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
WINDOW 123 -68 56 VBottom 2
WINDOW 39 -50 56 VBottom 2
SYMATTR InstName V2
SYMATTR Value PWL(0 0 .1u 5)
SYMBOL cap 688 256 R0
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL voltage -224 64 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Va+
SYMATTR Value PWL(0 0 400u 4.096)
SYMBOL voltage -224 240 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
SYMATTR InstName Va-
SYMATTR Value PWL(0 4.096 400u 0)
SYMBOL voltage 32 304 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 1.8 227n .1n .1n 40n 199.5n)
SYMBOL voltage -144 608 R0
SYMATTR InstName Vsclk1
SYMATTR Value PULSE(0 1.8 9.5n .1n .1n 4.05625n 8.3125n)
SYMBOL bv 176 416 R0
SYMATTR InstName Bsclk
SYMATTR Value V=max(V(sclk1),V(sclk2))
SYMBOL voltage 416 608 R0
SYMATTR InstName Vsclk2
SYMATTR Value PULSE(0 1.81 11.875n .1n .1n 66.5n 199.5n)
SYMBOL voltage 512 0 M90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 68 56 VTop 2
WINDOW 39 50 56 VTop 2
SYMATTR InstName V3
SYMATTR Value 1.8
SYMBOL cap 688 144 M180
WINDOW 0 41 72 Left 2
WINDOW 3 39 44 Left 2
WINDOW 123 44 -6 Left 2
WINDOW 39 41 19 Left 2
SYMATTR InstName C2
SYMATTR Value 10µ
SYMATTR Value2 ic=4.096
SYMATTR SpiceLine Rser=10m
SYMBOL LTC2311-14 416 240 R0
SYMATTR InstName U1
SYMBOL cap 160 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 123 50 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10µ
SYMATTR Value2 ic=1.25
TEXT 600 464 Left 2 !.tran 400u
TEXT -80 424 Center 2 ;SCLK and _CNV\nare shown in timing\ndiagram on page 12\nof LTC2311-14 data sheet