polygon pusher
Newbie level 5
Hi,
I am designing a Schmitt trigger in Jazz 0.18 cmos. I am having a problem sizing the transistors. My approach was to centre the trip point of the schmitt without the feedback devices and then add in the feedback devices to try and give +/- 100mV Hysteresis. I can get the lower trip point where I want it but cannot seem to increase the upper trip point away from the original centre point no matter what I do to the feedback transistor size.
Any help much appreciated
I am designing a Schmitt trigger in Jazz 0.18 cmos. I am having a problem sizing the transistors. My approach was to centre the trip point of the schmitt without the feedback devices and then add in the feedback devices to try and give +/- 100mV Hysteresis. I can get the lower trip point where I want it but cannot seem to increase the upper trip point away from the original centre point no matter what I do to the feedback transistor size.
Any help much appreciated