Re: [CAD_CAM_EDM_DRO] EMC and lathes?

I Googled 44-LQFP to see what it was. It was as I suspected. The
interesting thing is I found an adapter you may find useful:

<http://www.proto-advantage.com/store/product_info.php?products_id=2200105>

--


Ron Thompson
On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA

There are two kinds of posts on newsgroups.
1. This is what I have done...
2. This is what I think...
Be aware of the difference!

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On 12/22/2010 8:49 AM, kabowers@... wrote:
>
> On Wed, 22 Dec 2010 00:14:52 -0600, you wrote:
>
> >kabowers@... <mailto:kabowers%40NorthState.net> wrote:
> >>>
> >>>
> >> Thanks for the info.
> >>
> >> That chip looks to be a good way to go. I had laid out an AD2S1200
> PC board and bought
> >> the parts quite some time ago, but other projects have taken
> precedence :(
> >> Look likes we're headed in the same direction.
> >>
> >>
> >Well, there is more to it. The chip needs a three-step reset sequence,
> >so I had to put a CPLD on
> >there to handle it. Also, their reference design has some problems in
> >the boosted op-amp circuit,
> >and you need more options on the gain settings if you don't want to have
> >to solder resistors to
> >set the right drive level so the chip gets the signal level it needs on
> >any particular resolver.
> >
> >Jon
> >
> >
> >------------------------------------
> The test circuit on the datasheet isn't exactly complete. Minimal
> information on the opamp. IIRC the early datasheets on the family
> omitted current/power dissipation completely.
> Thanks for the head sup on the reset.I was expecting to have to fiddle
> with the resistor values. I had noticed the reset was a bit unusual,
> but had missed the three step part. At lease I haven't etched a board yet.
> I REALLY wish that family was available in DIP packages. Homebrewing
> boards for 44-LQFP footprint is a strain and I don't have the equipment
> to remove them if I goof 8=(
>
> Keith Bowers WB4LSJ- Thomasville, NC
>
>


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