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Re: home-made signal generator question


Stefan Trethan
 

I have two max038 lying around which wait only for me making a schematic
for a generator.
these are sine/triangle/square wave generators that work up to 20Mhz.
there is a cheaper version that works to 1Mhz which is sufficient for what
you need.
Is this the same sort of part as the Intersil (?) 8038? I built a generator
around one of those some years back, it was fairly simple, and it's very
flexible.

It's similar but not the same.
The intersil part is only 300kHz max.

I doubt you get the intersil part for free so why bother?

I dunno when i have time for designing the generator and making a pcb,
could be a long time...
I want to allow for modulation (although i most likely never ever need it ;-) ).

The biggest problem now is the output stage, i have not designed such fast circuits before,
and i don't know how exactly to build it. i guess a opamp would be easiest but i don't know
if i can use it at 20Mhz just as i would use it at audio frequency.
need to think about it, and just now i have no time..
I only ordered the part to fill up the 8 item list having in the back of my mind i need a generator.


ST

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