[Amps] matched MOSFETs

[Steve Thompson]

On Thursday 30 October 2003 10:25, Walter Muth wrote:
> Hi,
>
> what would be the best parameters you can give to characterize a
> "matched  pair " for a high power push-pull amp design ( lets think
> about 600watts)
>
> Vgs(th) and gfs ?

Provide separate bias setting pots and there's no need to match Vgs.
>
> What tolerances may be acceptable?

+/- 10% on gm was a normal selection when I was on that side of things. If the 
devices come from the same batch code, use separate bies adjusters and 
there's probably no need to do any matching.

Steve