I don't have the UMC 0.13 models, so I tried with 0.18µm models. I think you could use the W/L ratios, perhaps scale them down a bit. But don't use min. size transistors (if you don't need max. speed).
Note:
I've used just one additional inverter, guess that's enough. In this case, the pos. and neg. inputs have to be swapped (relating to Vout1).
I don't have the UMC 0.13 models, so I tried with 0.18µm models. I think you could use the W/L ratios, perhaps scale them down a bit. But don't use min. size transistors (if you don't need max. speed). View attachment 116492
Note:
I've used just one additional inverter, guess that's enough. In this case, the pos. and neg. inputs have to be swapped (relating to Vout1).
Try to adjust the width ratio W(PMOS)/W(NMOS) to the low-field mobility ratio U0(NMOS)/U0(PMOS) of your process. It's probably close to 3 . You can find the U0 values in your models.
Try to adjust the width ratio W(PMOS)/W(NMOS) to the low-field mobility ratio U0(NMOS)/U0(PMOS) of your process. It's probably close to 3 . You can find the U0 values in your models.
This depends on individual W/L ratios, and of those ratios between the transistors. Play with them! Try increasing M4 and/or decreasing M3. See if this works in the required direction, and iterate, if necessary.