Version 4
SHEET 1 2580 1252
WIRE 224 0 176 0
WIRE 352 0 304 0
WIRE 528 0 480 0
WIRE 656 0 608 0
WIRE -336 64 -384 64
WIRE -160 64 -256 64
WIRE 352 80 352 0
WIRE 480 80 480 0
WIRE 704 80 704 48
WIRE -160 128 -160 64
WIRE 240 128 -160 128
WIRE 704 160 704 144
WIRE 704 160 592 160
WIRE 240 176 -160 176
WIRE -336 240 -384 240
WIRE -160 240 -160 176
WIRE -160 240 -256 240
WIRE 96 240 64 240
WIRE 240 240 160 240
WIRE 704 240 592 240
WIRE 704 256 704 240
WIRE -80 304 -112 304
WIRE 240 304 0 304
WIRE 704 336 704 320
WIRE 240 368 176 368
WIRE 176 448 176 368
WIRE 416 448 416 416
WIRE 176 560 176 528
WIRE -96 640 -96 624
WIRE 416 640 416 624
WIRE -96 736 -96 720
WIRE 416 736 416 720
FLAG 416 448 0
FLAG 704 240 OUT
FLAG 704 336 0
FLAG -384 240 0
FLAG -112 304 0
FLAG -96 736 0
FLAG 416 736 0
FLAG 416 624 sclk2
FLAG -96 624 sclk1
FLAG 176 560 0
FLAG -384 64 0
FLAG 176 0 0
FLAG 656 0 0
FLAG 704 48 0
FLAG 64 240 0
SYMBOL voltage 320 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 -240 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 -240 240 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 16 304 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 PULSE(0 1.8 227n .1n .1n 40n 199.5n)
SYMBOL voltage -96 624 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vsclk1
SYMATTR Value PULSE(0 1.8 9.5n .1n .1n 4.65n 9.5n)
SYMBOL bv 176 432 R0
SYMATTR InstName Bsclk
SYMATTR Value V=max(V(sclk1),V(sclk2))
SYMBOL voltage 416 624 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
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 38 64 Left 2
WINDOW 3 41 41 Left 2
WINDOW 123 41 -7 Left 2
WINDOW 39 41 16 Left 2
SYMATTR InstName C2
SYMATTR Value 10µ
SYMATTR Value2 ic=4.096
SYMATTR SpiceLine Rser=10m
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 C4
SYMATTR Value 10µ
SYMATTR Value2 ic=1.25
SYMBOL LTC2311-12 416 240 R0
SYMATTR InstName U1
TEXT 600 464 Left 2 !.tran 400u
TEXT -56 416 Center 2 ;SCLK and _CNV\nare shown in timing\ndiagram on page 11\nof LTC2311-12 data sheet