I'm not sure if this is the right forum, but here goes: MOSIS has pages like this one (
http://www.mosis.com/cgi-bin/cgiwrap/umosis/swp/params/tsmc-018/t77a_mm_non_epi_...) for the process they work with, and there is a section containing ring oscillator power and frequency measurements. Does anyone know what test structure they use to come up with these numbers? When I try to duplicate the measurements in simulation with a ring oscillator of minimum-sized inverters (Wn=Wmin; Wp=2*Wmin), I come up with about 4x less power and about 40% higher frequency than they do.
The lines I'm talking about look like this:
DIV1024 (31-stg,1.8V) 0.02 uW/MHz/gatewhich made me think maybe DIV1024 is a standard structure, but I haven't been able to find anything on it.
Thanks,
Jeremy