Hi
I'm trying to use mosfets for a push pull current gain stage on a dc coupled amplifier with opamp feedback. The feedback is supposed to operate in the high MHz range, so I'm looking for ways to statically reduce crossover distortion even before feedback to alleviate the load on the opamp and get a better THD. After looking around for a way which does not involve a lot of components (and with that a lot of parasitic capacitances) I believe using zener diodes in reverse bias might be "cleaner" than stacking multiple diodes in forward bias to get a level shift.
Schematic:
I haven't seen anyone else doing it this way and I suspect there to be a reason. Where might I run into problems with this scheme? Is there an easier (high frequency compatible) version I might have overlooked?
Thanks Adrian