jfyan said:
fanshuo said:
amarnath said:
what is the supply voltage. the oscillator should oscillate from vdd to vdd-ir, where r is the resistance of the load of the delay element.i is the current when full switching occurs .
amarnath
This is just a linear model of ring oscillator
It will never saturate
besides, i think, the oscillator you bulit can not keep in its stable oscillation, because it is linear model. as i know, only non-linearity can limit the oscillation
amplitude. so if the oscilation set up stablly, non-linearity must exist in your system. correct me if above is wrong.
jeff
Yes, in normal ring oscillator it should start with a transfer gain>1
in my case it is set to be exact 1
so no saturation will happen
and it is also stable
the stable oscillation amplitude should determined by the initial condition
but I have not figure out how exactly it is
regards,