In article ,
says...
For those trying to solder those TSSOP and TQFP AD
chips into a circuit I found this site on the net

http://aprilog.com/perl/main.pl

They sell adaptors to solder the chip onto to plug
into standard dip sockets.

There are other types of breadboard circuit boards
for these chips as well. Search on google for
"TSSOP breadboard" or "TQFP breadboard".

Now that I see it might be possible I'm going to try
and make use of those 9954 and 9851 chips I got as
samples. The 9932 looks interresting too, with it's
low power. I also want to get a sample of the 9834,
now THAT's a low power chip, perfect for QRP.

Anybody have any 'war stories' about using these DDS
chips in a rig as a vfo?


The Aprilog adaptors do work. I've used them on both AD9852/AD9854
chips and ATmega128 chips. Drawbacks a 1) they aren't exactly free;
and 2) Aprilog can be a little quirky to deal with at times, although
they've always come through for me in the end. (I think it's a one- or
two-man shop that sometimes gets overwhelmed with business.) They will
sometimes cut you a good deal on slightly-nonstandard stock.

They are certainly preferable to hand-soldering. I'd say give 'em a try
with the 9900-series DDS parts and report back to let us know your
results.

-- jm

------------------------------------------------------
http://www.qsl.net/ke5fx
Note: My E-mail address has been altered to avoid spam
------------------------------------------------------