--- In LTspice@..., ?????????¡Á ¨¢???????? <bordodunovalex@...> wrote:
Hi Tony.
I have for you is good advice. It applies to models of transistors. I recommend to remove the parameter DELTA. This setting adjusts the threshold of the transistor when the transistor width. It makes a significant contribution to the width of transistors of the order of several microns or less. With the width of the transistor more than 100 microns in the threshold correction is very small. You can verify this by your example. Note the time of calculation. DELTA exception parameter reduces the computation time and improves the convergence.
Bordodynov.
Hello Alex,
Thanks for your advice, I hope it helps someone. I tried setting Delta to 0 and 1, in the Si4500B example, and confirmed by looking at the data that there was almost no difference. The difference was never greater than 0.45% for the drain current.
Perhaps, as you say, it affects smaller devices significantly more.
I'm not a CMOS designer, so I learned something today, and it's not even lunchtime yet!
Regards,
Tony
