I designed a low power LCVCO. When I tried to lower it's current as more as possible, I must check what minimum current the VCO needed for starting oscillation.
At first, I used PSS and enable "Oscillator" item. I found the VCO very easy to oscillate.
But when I use transient, it's difficult for the VCO to start oscillating, even if I chose traponly in transient options.
My question is which one could I trust? PSS or transient?
Any help will be appreciated.