In article ,
says...
A lot of the modern signal generator projects are based on the Analog
Devices AD9850. Analog Devices actually encourages hams to use their sample
service, so the part itself is no problem. It is relatively simple to
program, so you may choose the microcontroller of your choice, although most
of the projects out there seem to lean toward the PIC.

Which is something I can't begin to understand. With the AVRs, you get
a faster chip with an industrial-strength C/C++ compiler that also
happens to be free (as in beer).

I guess some people are just really, really, REALLY into PIC assembly.
There's no other explanation for its popularity in the ham community.

The challenge could well be the circuit board. The 9850 is only available
in TSSOP so you need a good quality circuit board to attach it to. If your
PCB skills are good this won't be a problem. But if not, you might need to
hunat around for a protoboard or something of that ilk that you can get in
your location. Unfortunately, these tend to be kind of pricey.

Actually the AD9850 comes in a SOIC package with 20 pins/inch, or half
the spacing of a normal DIP IC, rather than a TSSOP (0.5 mm lead pitch,
or about 50 pins/inch).

It is not hard to work with a SOIC dead-bug style. TSSOPs are a
different story; they really need to be mounted to a PC board,
especially if there are more than 16 pins to deal with.

-- jm

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