It's not hard at all.
At 02:41 AM 5/16/2006, Michael Rubitschka wrote:
>Hi Jim
>
>These 9958, 9959 look verry promising but
>I am afraid they are impossible to solder
>without a reflow process.
>
>Anyone who has used this devices successfully ?
>
>Cheers
>Michael
>
> >From: "mdgolfbum" <[EMAIL PROTECTED]>
> >Reply-To: [email protected]
> >To: [email protected]
> >Subject: Re: Fw: [soft_radio] QSD direct to A/D
> >Date: Mon, 15 May 2006 17:30:45 -0000
> >
> >This will be my first attempt using the DDS chips in my "own"
> >design. Obviously I'm borrowing from everywhere I can. From what I
> >understand the 9958, 9959 are better even with their 10bit vs 14bit
> >DACs. I'm going on faith...
> >
> >BTW, take note of the release date of the datasheet. I was fooled by
> >looking only at the rev level. The 9958, 9959 are from late 2005 vs
> >2003 or so for some of the other chips.
> >
> >As far as soldering goes, I don't think AD will go backwards to fine
> >pitch leads so it looks like learning to solder the LFCSP is the
> >only way to stay up with the latest and greatest.
> >
> >The conductor does wrap around the side a bit. My first attempt will
> >be to do the soldering pin by pin to that area. If necessary I'll
> >try the paste and oven approach. I've got an oven I bought just for
> >SMD work but haven't yet tried it.
> >
> >It's only money...
> >
> >73
> >
> >jim ab3cv
> >
> >--- In [email protected], [EMAIL PROTECTED] wrote:
> > >
> > > Looks like the AD9951 part is gaining in popularity in a dual
> > > configuration and I was wondering why the AD9859 part couldn't be
> >used in
> > > a dual configuration ? Does it not have the same lower spur
> >level ?, it's
> > > a 10bit DAC, cheaper, etc. I would also think the AD9958 dual part
> >offers
> > > too many package problems (for me anyway) with it's LFCSP vs the
> >other
> > > TQFP. Since my applications are digital and I look for the high
> >speed
> > > comparators like on the AD9952, what's a good external comparator
> >to use
> > > ?
> > >
> > > 73 Kees K5BCQ
> > >
> >
> >
> >
> >
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>Yahoo! Groups Links
>
>
>
>
Cecil Bayona
KD5NWA
www.qrpradio.com
"Windows, the most successful software virus ever" Don Seglio Batuna
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