Reply by Thomas Heller●November 25, 20102010-11-25
Am 24.11.2010 11:48, schrieb Morten Leikvoll:
> "Thomas Heller"<theller@ctypes.org> wrote in message
> news:8ks9nqF329U1@mid.individual.net...
>> How are you doing prototyping with BGA packages?
>
> FPGA's I would prototype on an eval board.
> I don't use these myself, but look at http://www.emulation.com/
> They may have some sockets that could just squeeze in.
>
>
Looks interesting, but expensive ;-).
Reply by Thomas Heller●November 25, 20102010-11-25
Am 25.11.2010 10:11, schrieb Philip Herzog:
> On 11/20/2010 10:27, Thomas Heller wrote:
>> Which series / package should I choose for long availability?
>
> What's long in your terms?
>
> I'm in the measurement equipment industry, our oldest products have been
> on the market for fifteen years and they contain Xilinx FPGAs that have
> been introduced about seventeen years ago, which have been discontinued
> lately.
We are in a very similar situation; our product lifetime is also around
10 years. We have boards still in production based on parts like 4006
(no longer available but we have some stock although they were very
expensive), XCS05, XC3S200. Plus XC9572/XC9572XL cplds.
> Usually, we aim for parts which are targeted at the automotive industry
> since they have the tendency to have a longer lifetime.
Thanks for this tip.
Thomas
Reply by Philip Herzog●November 25, 20102010-11-25
On 11/20/2010 10:27, Thomas Heller wrote:
> Which series / package should I choose for long availability?
What's long in your terms?
I'm in the measurement equipment industry, our oldest products have been
on the market for fifteen years and they contain Xilinx FPGAs that have
been introduced about seventeen years ago, which have been discontinued
lately.
Usually, we aim for parts which are targeted at the automotive industry
since they have the tendency to have a longer lifetime.
- Philip
--
Some of the best things in life are total mistakes.
(Rachel Porter)
Reply by Uwe Bonnes●November 24, 20102010-11-24
Morten Leikvoll <mleikvol@yahoo.nospam> wrote:
> "Thomas Heller" <theller@ctypes.org> wrote in message
> news:8ks9nqF329U1@mid.individual.net...
> > How are you doing prototyping with BGA packages?
> FPGA's I would prototype on an eval board.
> I don't use these myself, but look at http://www.emulation.com/
> They may have some sockets that could just squeeze in.
Normally you prototype some circuit, where the FPGA is only soure and sink
of data, with many connectins to the fpga. Using some FPGA prototype board
means designing two time, first with the prototype board, then with the fpga
on board...
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
Reply by Morten Leikvoll●November 24, 20102010-11-24
"Thomas Heller" <theller@ctypes.org> wrote in message
news:8ks9nqF329U1@mid.individual.net...
> How are you doing prototyping with BGA packages?
FPGA's I would prototype on an eval board.
I don't use these myself, but look at http://www.emulation.com/
They may have some sockets that could just squeeze in.
Reply by Gabor●November 23, 20102010-11-23
On Nov 22, 6:39=A0pm, Uwe Bonnes <b...@elektron.ikp.physik.tu-
darmstadt.de> wrote:
> John Adair <g...@enterpoint.co.uk> wrote:
> > Uwe
> > Spartan-6 availability is improving very rapidly and in many cases is
> > now on shorter lead time than Spartan-3 parts. We have a considerable
> > amount here now of the parts we use most awaiting some time on our
> > line to build more development boards. 4-6 weeks is usually the
> > standard lead time value, usually quoted in better times, on Spartan
> > families if you buy them in any numbers.
>
> We are looking at QFP package. And lead time is _constant_ 6 weeks in the
> future ...
>
> --
> Uwe Bonnes =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0b...@elektron.ikp.physik.tu-dar=
Ah, yes... Alice through the looking-glass! You can have
jam "every other day" (which means never today).
Reply by Uwe Bonnes●November 22, 20102010-11-22
John Adair <g1@enterpoint.co.uk> wrote:
> Uwe
> Spartan-6 availability is improving very rapidly and in many cases is
> now on shorter lead time than Spartan-3 parts. We have a considerable
> amount here now of the parts we use most awaiting some time on our
> line to build more development boards. 4-6 weeks is usually the
> standard lead time value, usually quoted in better times, on Spartan
> families if you buy them in any numbers.
We are looking at QFP package. And lead time is _constant_ 6 weeks in the
future ...
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
Reply by John Adair●November 22, 20102010-11-22
Uwe
Spartan-6 availability is improving very rapidly and in many cases is
now on shorter lead time than Spartan-3 parts. We have a considerable
amount here now of the parts we use most awaiting some time on our
line to build more development boards. 4-6 weeks is usually the
standard lead time value, usually quoted in better times, on Spartan
families if you buy them in any numbers.
The general components shortage is only starting to improve and Xilinx
are doing a much better job than most vendors. It's not quite a
paradise yet but I expect Q1/2011 we will be back to nearly normal
supply conditions and almost certainly for FPGA availability.
John Adair
Enterpoint Ltd.
On Nov 21, 9:12=A0pm, Uwe Bonnes <b...@elektron.ikp.physik.tu-
darmstadt.de> wrote:
> John Adair <g...@enterpoint.co.uk> wrote:
>
> ..
>
> > large numbers. Digikey are showing stock in the TQFP package.
>
> ... with a constant lead time 6 weeks in the future.
>
> --
> Uwe Bonnes =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0b...@elektron.ikp.physik.tu-dar=
>Am 20.11.2010 13:03, schrieb Kolja Sulimma:
>>> I try to avoid BGA.
>>
>> Don't.
>> It has many advantages over the other packages,
>> among them
>> - better yield in soldering.
>> - less EMI
>> - less ground bounce
>> - less board space
>> - better cooling
>>
>> Kolja
>
>How are you doing prototyping with BGA packages?
Get your own reflow oven kit like this:
http://www2.conrad.nl/goto.php?artikel=530330
I'm pretty sure similar (much cheaper) kits are offered on Ebay. I
never tried it but it looks usefull for prototyping.
--
Failure does not prove something is impossible, failure simply
indicates you are not using the right tools...
nico@nctdevpuntnl (punt=.)
--------------------------------------------------------------
Reply by Uwe Bonnes●November 21, 20102010-11-21
John Adair <g1@enterpoint.co.uk> wrote:
..
> large numbers. Digikey are showing stock in the TQFP package.
... with a constant lead time 6 weeks in the future.
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------