Your favorite 10 analog IC's

[Robert]

"John Larkin" <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote in
message
[snip]

Well, the CA3046 went, but Intersil still makes NPN transistor arrays
of higher performance. The HFA3046, for example, is in the SOIC
package and the transistors have a ft of 8 GHz. Costs 20 times as much
as a CA3046!

Tim.

NEC has some fast arrays. Too fast, often.

John

Maxim has a couple of precision Bipolar Arrays (QuickChip on 27GHz GST-2
process) they got when they bought the old IC manufacturing line from
Tektronix.
http://www.maxim-ic.com.cn/products/asics/wireless/design_methods.cfm

Robert

 

[Winfield Hill]

Jim Thompson wrote...

John Larkin wrote:

http://www.cel.com/pdf/datasheets/upa807t.pdf
These are apparently two discrete transistors in the package.
They peak at over 12 GHz Ft, so are sometimes (usually) twitchy.

ONLY 12 GHz fT? I've recently been working with 35 GHz fT NPN's ;-)

It's hard to win pissing matches of this type. If you use 35GHz
parts, someone else is using Infineon's old 45GHz parts. They in
turn have to yield to the folks using three-year-old 75GHz PI-HEMTs.
And they yield to the folks using 100GHz parts, and they yield ...

For example, a bit of browsing turns up 3ps SiGe bipolar technology
now in production, and that's likely not the fastest stuff around.


--
Thanks,
- Win

 

[Winfield Hill]

John Larkin wrote...

I have some samples of BFP520, which is a 45 GHz SiGe npn,
probably the fastest surface-mount transistor around. ...

NEC's old ne67300 series was rated at Fmax = 100GHz. There's
always something faster someplace...


--
Thanks,
- Win

 

[John Larkin]

On 19 Feb 2005 11:04:04 -0800, Winfield Hill
<hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote:

John Larkin wrote...

I have some samples of BFP520, which is a 45 GHz SiGe npn,
probably the fastest surface-mount transistor around. ...

NEC's old ne67300 series was rated at Fmax = 100GHz. There's
always something faster someplace...

But wire bonds! Somebody recently said the three worst things in
electronics are inductance, inductance, and inductance.

John

 

[keith]

On Sat, 19 Feb 2005 12:03:42 -0800, John Larkin wrote:

On 19 Feb 2005 11:04:04 -0800, Winfield Hill
hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote:

John Larkin wrote...

I have some samples of BFP520, which is a 45 GHz SiGe npn,
probably the fastest surface-mount transistor around. ...

NEC's old ne67300 series was rated at Fmax = 100GHz. There's
always something faster someplace...


But wire bonds! Somebody recently said the three worst things in
electronics are inductance, inductance, and inductance.

Well, in my business it's capacitance, capacitance, capacitance.
Though in the past few years it's been turning to leakage, leakage,
leakage. Inductance is for the power/packaging weenies. ;-)

--
Keith

 

[Winfield Hill]

John Woodgate wrote...

John Larkin wrote ...

But wire bonds! Somebody recently said the three worst things
in electronics are inductance, inductance, and inductance.

It can play merry L with your design.

I'll see your L and raise you a C.


--
Thanks,
- Win

 

[Winfield Hill]

Spehro Pefhany wrote...

... I don't think there is an IC package made that does not have
a mating socket of some kind. Here's one for a part I'm working
with right now-- a TQFP-100 SMT part with 0.5mm lead pitch and a
14mm square body: http://www.emulation.com/pdf/skt010.pdf

How much does that socket cost?


--
Thanks,
- Win

 

[John Woodgate]

I read in sci.electronics.design that Winfield Hill <hill_a@t_rowland-
dotties-harvard-dot.s-edu> wrote (in <cv9tv1091q@drn.newsguy.com&gt about
'Your favorite 10 analog IC's', on Sun, 20 Feb 2005:

John Woodgate wrote...

John Larkin wrote ...

But wire bonds! Somebody recently said the three worst things
in electronics are inductance, inductance, and inductance.

It can play merry L with your design.

I'll see your L and raise you a C.


Sorry; I have depletion problems in bank 1 and must quit the field.

--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[Keith Williams]

In article <ddj911tip5vo49lcgqcfmb1rr0ru2f08na@4ax.com>,
jjlarkin@highSNIPlandTHIStechPLEASEnology.com says...

On Thu, 17 Feb 2005 09:19:00 -0500, Keith Williams <krw@att.bizzzz
wrote:

In article <822811lsr1k8b3921pig52jf81gojca7ri@4ax.com>,
jjSNIPlarkin@highTHISlandPLEASEtechnology.XXX says...
On Thu, 17 Feb 2005 02:20:32 GMT, Rich Grise <richgrise@example.net
wrote:

On Wed, 16 Feb 2005 12:03:09 -0500, Spehro Pefhany wrote:
On Wed, 16 Feb 2005 08:45:47 -0800, the renowned John Larkin
On Wed, 16 Feb 2005 12:12:38 GMT, Fred Bloggs <nospam@nospam.com
Ken Smith wrote:
The "zero power" version on the 22V10 like TICPAL22V10Z is handy in
battery powered stuff.
Now *that* is a good digital catch-all.
The Xilinx Coolrunner flash CPLDs (and similar) are the next gen of
this sort of thing. The smallest ones are something like 4x the logic
of a a 22V10, have a more general architecture, and cost something
like $1.20.
That's a very reasonable price for many applications.
They are surface-mount and have to be programmed on-board,
which can be a small nuisance.

Why do they have to be programmed on board? Can't you get a <$200
programming adapter for the little guys?

Maybe because it's surface-mount? I've never heard of a socket for a
surface-mount part.


There are some clamshell thingies for TSOPs and such; maybe there's an
adapter for my programmer. There are even BGA sockets that go for
$1000 or thereabouts. I guess you use them for those $4000 FPGAs.

I used a dozen or so of these BGA sockets a couple of years ago. We
still use them for test systems. At $3000 each I don't recommend them
for volume production though. ;-)

http://www.aqlmfg.com/products-sockets1.htm

Good grief!

We just started soldering our own BGAs, some 456-pin, 1 mm pitch
Xilinx parts, $105 each. Everybody was fairly terrified, and surprised
that it just works. But then, I remember when we were scaired about
using 1206's.

That project had it all (a ten-off processor test fixture), from DIP-
8/40, SOIC-14(IIRC), QFP, Xilinx BGA256 and FG680, our processor
(socketed) BG-300ish, and I can't remember how many passive types.
....whatever I could lay my hands on.

I was a bit worried about the BGA soldering since I only had enough of
the Xilinx parts to populate the needed boards, but it all went
flawlessly. The vendor knew their stuff (they ought to).

--
Keith