Version 4 SHEET 1 3152 1440 WIRE 1568 -48 1568 -80 WIRE 1072 16 1072 -16 WIRE 1072 80 1072 16 WIRE 1568 80 1568 32 WIRE 1568 144 1568 80 WIRE 1072 192 1072 160 WIRE 1072 192 992 192 WIRE 1376 192 1312 192 WIRE 1552 192 1376 192 WIRE 1920 192 1648 192 WIRE 2016 192 1920 192 WIRE 2096 192 2016 192 WIRE 2112 192 2096 192 WIRE 992 224 992 192 WIRE 1600 240 1600 192 WIRE 1072 256 1072 192 WIRE 1312 256 1312 192 WIRE 1600 256 1600 240 WIRE 1920 256 1920 192 WIRE 2016 256 2016 192 WIRE 1312 368 1312 336 WIRE 1920 368 1920 336 WIRE 2016 368 2016 320 WIRE 1072 400 1072 336 WIRE 1072 432 1072 400 FLAG 1312 368 0 FLAG 1376 192 IN FLAG 1568 -80 0 FLAG 1568 80 PHI_n FLAG 1600 240 VSS FLAG 992 224 0 FLAG 1072 16 VDD FLAG 1072 400 VSS FLAG 1920 368 0 FLAG 2016 368 0 FLAG 2096 192 OUT SYMBOL voltage 1312 240 R0 SYMATTR InstName Vin SYMATTR Value PULSE(-5V 5.0V 100ns 50ns 50ns 500ns 1200ns) SYMBOL nmos4 1648 144 R90 WINDOW 0 -56 24 VRight 2 WINDOW 3 -26 -208 VRight 2 SYMATTR InstName M1 SYMATTR Value nmos1 L=100u W={W_value} SYMBOL voltage 1568 48 R180 WINDOW 0 24 96 Left 2 WINDOW 3 24 16 Left 2 SYMATTR InstName Vcntl_n SYMATTR Value 5V SYMBOL voltage 1072 64 R0 SYMATTR InstName Vps2 SYMATTR Value 5V SYMBOL voltage 1072 240 R0 SYMATTR InstName Vps3 SYMATTR Value 5V SYMBOL res 1904 240 R0 SYMATTR InstName R SYMATTR Value 100k SYMBOL cap 2000 256 R0 SYMATTR InstName C SYMATTR Value 10pF TEXT 1432 536 Left 2 !.TRAN 1ns 500ns 0ns 1ns TEXT 1176 480 Left 2 !.model nmos1 nmos (kp=0.25m Vto=+1.0V lambda=0.02 gamma=0.9) TEXT 1376 592 Left 2 !.STEP param W_value LIST 100u 500u