Version 4
SHEET 1 880 916
WIRE -304 112 -352 112
WIRE 112 112 -224 112
WIRE 400 112 368 112
WIRE 496 112 480 112
WIRE -448 160 -592 160
WIRE -448 176 -448 160
WIRE -128 192 -160 192
WIRE 112 192 -48 192
WIRE 512 192 368 192
WIRE 624 192 512 192
WIRE -448 272 -448 256
WIRE 112 272 -448 272
WIRE 512 272 368 272
WIRE -448 288 -448 272
WIRE 512 288 512 272
WIRE -592 336 -592 160
WIRE 112 352 -144 352
WIRE 384 352 368 352
WIRE 464 352 448 352
WIRE -448 384 -448 368
WIRE 512 384 512 368
WIRE 112 432 32 432
WIRE 384 432 368 432
WIRE -592 448 -592 416
WIRE 32 448 32 432
WIRE 32 544 32 528
WIRE -144 592 -144 352
WIRE 192 592 -144 592
WIRE 624 592 624 192
WIRE 624 592 272 592
WIRE -144 608 -144 592
WIRE -144 704 -144 688
WIRE -144 800 -144 784
FLAG -144 800 0
FLAG 384 432 0
FLAG 32 544 0
FLAG 464 352 0
FLAG -448 384 0
FLAG 512 384 0
FLAG 496 112 0
FLAG -592 448 0
FLAG -352 112 0
FLAG -160 192 0
SYMBOL res 288 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 121K
SYMBOL res -128 704 R180
WINDOW 0 -45 67 Left 2
WINDOW 3 -69 29 Left 2
SYMATTR InstName R2
SYMATTR Value 464K
SYMBOL cap 384 368 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value .001µ
SYMBOL voltage 32 432 R0
WINDOW 123 24 146 Left 2
WINDOW 39 24 125 Left 2
SYMATTR Value PWL(0 5 14 5 14.001 0 15.001 0 15.002 5)
SYMATTR InstName V1
SYMBOL voltage -144 688 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(1 -5 11 -5 12 -4 13 -4 14 -5)
SYMBOL res -464 160 R0
SYMATTR InstName R3
SYMATTR Value 2150K
SYMBOL res -464 272 R0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL voltage -592 320 R0
WINDOW 123 24 146 Left 2
WINDOW 39 24 125 Left 2
SYMATTR Value PWL(1 12 8 12 9 10 10 10 11 12)
SYMATTR InstName V3
SYMBOL res 384 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 1Meg
SYMBOL voltage -32 192 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 27 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value PWL(1 3.3 5 3.3 6 3 7 3 8 3.3)
SYMBOL voltage -208 112 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 V5
SYMATTR Value PWL(1 5 2 5 3 4 4 4 5 5)
SYMBOL res 496 176 R0
SYMATTR InstName R6
SYMATTR Value 93.1K
SYMBOL res 496 272 R0
SYMATTR InstName R7
SYMATTR Value 9.53K
SYMBOL LTC2900-2 240 272 R0
WINDOW 0 0 -96 Center 2
WINDOW 3 0 96 Center 2
SYMATTR InstName U1
TEXT 536 664 Left 2 !.tran 16