ODP: thru zero VCO questions

[Martin Czech]

:::1. whatever will be starting position of FF, VCO's integrator will
:::travel from 0V (hopefully) to one of thresholds. When it reaches
:::any of them, FF toggles, and integrator changes direction.
:::I see no problem here. Noise and metastability - those are
:::the problems we're trying to solve. Maybe using 2 sets of
:::comparators, and pulse "spray" can fix it completely.
:::

OK.

:::2. AFAIK FM input will be used only for modulation, so stability
:::or distortion isn't such a problem. I don't have objections using
:::OTA input for FM. Done that in my quadVCO, where it is set
:::to a certain voltage, and modulated from FM input. Works fine.
:::I can even get through-zero FM, but very limited.
:::

Well, sometimes the linear FM input could be used for very wide, linear
sweeps and such, or even linear melodies. This is why I asked.


m.c.