Thanks to everyone who responded to my post.  I have so many different
approaches to consider now.  I'll update the list when I complete the project.
Thanks again for everyone's input!

--- Freddie Leaf <freddie_leaf@yahoo.com> wrote:
> Hi PICList,
>
> I need to generate a sine wave signal for input to an existing electronic
> circuit.  The signal will vary in frequency as a function of some other
> inputs
> to a 16F877.  I'm thinking I could generate a 0V to 5V output pulse with the
> PIC but need a circuit to convert this signal to a +/- sine wave. The
> peak-to-peak voltage has to be a least 2.0V.
>
> I've experimented with a cap in series with the PIC output, and a resistor to
> ground.  This generates a nice positive and negative spike with clean zero
> crossings but this is not good enough.  The device I am sending the signal to
> is also looking at the slew rate of the signal.  I need a relatively genuine
> sine wave.
>
> Thanks in advance if you have an ideas.
>
> Freddie.
>
>
> =====
> Best Regards,
> "If it can't be done with a PIC, it can't be done :+)"
>
> __________________________________________________
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> http://auctions.yahoo.com/
>


=====
Best Regards,
"If it can't be done with a PIC, it can't be done :+)"

__________________________________________________
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Yahoo! Auctions - buy the things you want at great prices
http://auctions.yahoo.com/

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