AFAIK, Cadence has a sizable fraction of the market in a lot of the software involved. If you have to ask the price, you can't afford it.
Do you think ElectricVLSI or Tanner are good ideas? I learned Cadence from university, but apparently if I am to start a business, I cannot afford Cadence at all.
My main focus is on 0.35um/0.5um CMOS/BiCMOS analog or mixed signal. High performance digital is not my specialty, nor high voltage. Tu n
I'd say that for analog having a good simulator (which means either synopsis or cadence) is not optional, it is required, at 0.35 um you are already have short channel devices, so hand calcularion wil be off by quite a bit, also the pasdives in a integrated circuit are far from perfect so simulation is required
Now simulation are only as good as your model is, and to have a good model you need to get it from the fab itself, the fab (after signing NDA with your company no single peoples) will give you a PDK (process developement kit) wich is a big obfuscated blob you plug in cadence(or synopsis) simulator and it spits out results
If you can get simulation models for your eda suite of choice you also need to decide wether the money saved by using the cheaper cad are worth the risk of having to do more prototype runs because the simulator is less accurate
Depending on your Financial situation you might also considerazione taking out a loan to start the company with which you can get a cadence/synopsis licenze of if it is to far you might give tanner/Electric a shot, knowing that it is not so proven and it might bust some production runs