Low noise N-JFET ?

[Joerg]

Uwe Bonnes wrote:

Uwe Bonnes <bon@hertz.ikp.physik.tu-darmstadt.de> wrote:
B.t.w.: Congratulations to the NXP web site developper :-(

Their search doesn't find the BF862.

Argh...

That's what I am saying all along. IMHO they ought to fire the web team
and maybe some managers. I've tried to help (seriously) but it seems
they don't want outside help. Too bad, Philips used to be such a good
company. Heck, maybe I should write Mr.Kravis at some point. But only
because I have some more emotional ties to Philips. Their EE20 kit is
what brought me to electronics.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Pieter]

On Thu, 01 Nov 2007 10:29:06 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Hey, aren't you in the Netherlands? I've lived there many years ago and
most people I knew had some relative or acquaintance who worked at
Philips, or now NXP. Maybe ask someone?
Yes, I live in the Netherlands. I have my own company now, and have in
the past also worked for several companies including Philips in
Eindhoven. NXP is former Philips Semiconductors in Nijmegen.
Ah, finally another one with entrepreneurial spirit in Europe. But I
wouldn't use "dit werkt ook niet" in the email address

Helps perfectly against spam.

Randstad area? Or out in the country? I used to live in Zuid Limburg, by
many Dutch people not considered to be part of NL because they couldn't
understand us. And they also didn't get most of the Urbanus jokes while
we were rolling on the floor.

South, between Tilburg and eindhoven. Near the Belgian border, so we
do understand Urbanus.

I did not find information on noise from 0 - 10 Hz yet. Seems that
there are only a few specialists.


NXP's marketing is a mystery to me. Sometimes I wonder whether they
still have one. I found the BF862 by pure coincidence. Never got any
email announcement about it, just stuff like all those boring protector
diodes they make. Yawn. Yet this FET could really take off in the
marketplace if they'd advertise it _and_ provide a little more data or
at least cram some more info into an app note. And they should get a
better web design time but that's a whole 'nother story.

I know, worked for Philips a lot. And know how it works. Great
technical knowledge. Also many people in marketing. But somewhere
things are missed. Maybe that webdesign changed when they left
Philips. Though the same people still work there. They are oriented
towards companies, not endusers.

I will check the BF862 datasheet.

My problem lies mostly in the 0-10Hz range, parts do get get specified
there.

Pieter

 

[Joerg]

Pieter wrote:

On Thu, 01 Nov 2007 10:29:06 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:
Hey, aren't you in the Netherlands? I've lived there many years ago and
most people I knew had some relative or acquaintance who worked at
Philips, or now NXP. Maybe ask someone?
Yes, I live in the Netherlands. I have my own company now, and have in
the past also worked for several companies including Philips in
Eindhoven. NXP is former Philips Semiconductors in Nijmegen.
Ah, finally another one with entrepreneurial spirit in Europe. But I
wouldn't use "dit werkt ook niet" in the email address

Helps perfectly against spam.

Randstad area? Or out in the country? I used to live in Zuid Limburg, by
many Dutch people not considered to be part of NL because they couldn't
understand us. And they also didn't get most of the Urbanus jokes while
we were rolling on the floor.

South, between Tilburg and eindhoven. Near the Belgian border, so we
do understand Urbanus.

That would be south enough

I did not find information on noise from 0 - 10 Hz yet. Seems that
there are only a few specialists.

NXP's marketing is a mystery to me. Sometimes I wonder whether they
still have one. I found the BF862 by pure coincidence. Never got any
email announcement about it, just stuff like all those boring protector
diodes they make. Yawn. Yet this FET could really take off in the
marketplace if they'd advertise it _and_ provide a little more data or
at least cram some more info into an app note. And they should get a
better web design time but that's a whole 'nother story.

I know, worked for Philips a lot. And know how it works. Great
technical knowledge. Also many people in marketing. But somewhere
things are missed. Maybe that webdesign changed when they left
Philips. Though the same people still work there. They are oriented
towards companies, not endusers.

Orientation towards companies only is IMHO a big mistake. It misses the
next generation of sales. At least in the US it's the little guys who
will be the high rollers 10-20 years from now. Many start in a garage
just like Hewlett and Packard did. Imagine someone would have refused to
sell them stuff.

Looks like web design has been outsourced to some extent. It doesn't work.

I will check the BF862 datasheet.

Got to go through Digikey because NXP's web site current can't find it
via the search box.

My problem lies mostly in the 0-10Hz range, parts do get get specified
there.

Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.

--
Groetjes, Joerg

http://www.analogconsultants.com/

 

[Fred Bartoli]

Le Thu, 01 Nov 2007 22:40:48 +0000, Joerg a ĂŠcrit:

Pieter wrote:
On Thu, 01 Nov 2007 10:29:06 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:
Hey, aren't you in the Netherlands? I've lived there many years ago
and most people I knew had some relative or acquaintance who worked
at Philips, or now NXP. Maybe ask someone?
Yes, I live in the Netherlands. I have my own company now, and have
in the past also worked for several companies including Philips in
Eindhoven. NXP is former Philips Semiconductors in Nijmegen.
Ah, finally another one with entrepreneurial spirit in Europe. But I
wouldn't use "dit werkt ook niet" in the email address

Helps perfectly against spam.

Randstad area? Or out in the country? I used to live in Zuid Limburg,
by many Dutch people not considered to be part of NL because they
couldn't understand us. And they also didn't get most of the Urbanus
jokes while we were rolling on the floor.

South, between Tilburg and eindhoven. Near the Belgian border, so we do
understand Urbanus.


That would be south enough


I did not find information on noise from 0 - 10 Hz yet. Seems that
there are only a few specialists.

NXP's marketing is a mystery to me. Sometimes I wonder whether they
still have one. I found the BF862 by pure coincidence. Never got any
email announcement about it, just stuff like all those boring
protector diodes they make. Yawn. Yet this FET could really take off
in the marketplace if they'd advertise it _and_ provide a little more
data or at least cram some more info into an app note. And they should
get a better web design time but that's a whole 'nother story.

I know, worked for Philips a lot. And know how it works. Great
technical knowledge. Also many people in marketing. But somewhere
things are missed. Maybe that webdesign changed when they left Philips.
Though the same people still work there. They are oriented towards
companies, not endusers.


Orientation towards companies only is IMHO a big mistake. It misses the
next generation of sales. At least in the US it's the little guys who
will be the high rollers 10-20 years from now. Many start in a garage
just like Hewlett and Packard did. Imagine someone would have refused to
sell them stuff.

Looks like web design has been outsourced to some extent. It doesn't
work.


I will check the BF862 datasheet.


Got to go through Digikey because NXP's web site current can't find it
via the search box.

I never understood your rants about philips/nxp website. It's not that
bad.
Just plug BF862 in the top right search box and it comes out immediately.

My problem lies mostly in the 0-10Hz range, parts do get get specified
there.


Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.

You can have a grasp of what it does by looking at the BF861 fig. 14
Not the best for low frequency.


--
Thanks,
Fred.

 

[Joerg]

Fred Bartoli wrote:

Le Thu, 01 Nov 2007 22:40:48 +0000, Joerg a ĂŠcrit:

Pieter wrote:
On Thu, 01 Nov 2007 10:29:06 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:
Hey, aren't you in the Netherlands? I've lived there many years ago
and most people I knew had some relative or acquaintance who worked
at Philips, or now NXP. Maybe ask someone?
Yes, I live in the Netherlands. I have my own company now, and have
in the past also worked for several companies including Philips in
Eindhoven. NXP is former Philips Semiconductors in Nijmegen.
Ah, finally another one with entrepreneurial spirit in Europe. But I
wouldn't use "dit werkt ook niet" in the email address
Helps perfectly against spam.

Randstad area? Or out in the country? I used to live in Zuid Limburg,
by many Dutch people not considered to be part of NL because they
couldn't understand us. And they also didn't get most of the Urbanus
jokes while we were rolling on the floor.
South, between Tilburg and eindhoven. Near the Belgian border, so we do
understand Urbanus.


That would be south enough


I did not find information on noise from 0 - 10 Hz yet. Seems that
there are only a few specialists.

NXP's marketing is a mystery to me. Sometimes I wonder whether they
still have one. I found the BF862 by pure coincidence. Never got any
email announcement about it, just stuff like all those boring
protector diodes they make. Yawn. Yet this FET could really take off
in the marketplace if they'd advertise it _and_ provide a little more
data or at least cram some more info into an app note. And they should
get a better web design time but that's a whole 'nother story.
I know, worked for Philips a lot. And know how it works. Great
technical knowledge. Also many people in marketing. But somewhere
things are missed. Maybe that webdesign changed when they left Philips.
Though the same people still work there. They are oriented towards
companies, not endusers.


Orientation towards companies only is IMHO a big mistake. It misses the
next generation of sales. At least in the US it's the little guys who
will be the high rollers 10-20 years from now. Many start in a garage
just like Hewlett and Packard did. Imagine someone would have refused to
sell them stuff.

Looks like web design has been outsourced to some extent. It doesn't
work.


I will check the BF862 datasheet.


Got to go through Digikey because NXP's web site current can't find it
via the search box.


I never understood your rants about philips/nxp website. It's not that
bad.

It is bad and I'm definitely not the only one saying that. Old saying
here in the US: A product is only as good as potential customers think
it is.

Just plug BF862 in the top right search box and it comes out immediately.

Well, today it does, maybe somebody reads these posts ;-)

Yesterday it clearly did not, and I've tried multiple times. So has Uwe
Bonnes here in this thread. That NXP site isn't reliable IMHO.

My problem lies mostly in the 0-10Hz range, parts do get get specified
there.


Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.

You can have a grasp of what it does by looking at the BF861 fig. 14
Not the best for low frequency.

From the NF figure in the table the parts seemt o be much different
though. But yes, the trend down there does not look good at all.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Pieter]

On Fri, 02 Nov 2007 13:28:59 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

<snip-a-lot>

I will check the BF862 datasheet.
Got to go through Digikey because NXP's web site current can't find it
via the search box.
I never understood your rants about philips/nxp website. It's not that
bad.
It is bad and I'm definitely not the only one saying that. Old saying
here in the US: A product is only as good as potential customers think
it is.

I had the same problem. Google helped and found it on the website.
Notice that the datahseet still says "Philips".

Just plug BF862 in the top right search box and it comes out immediately.
Well, today it does, maybe somebody reads these posts ;-)
Yesterday it clearly did not, and I've tried multiple times. So has Uwe
Bonnes here in this thread. That NXP site isn't reliable IMHO.

So a temporary problem.

My problem lies mostly in the 0-10Hz range, parts do get get specified
there.
Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.
You can have a grasp of what it does by looking at the BF861 fig. 14
Not the best for low frequency.
From the NF figure in the table the parts seemt o be much different
though. But yes, the trend down there does not look good at all.

Pieter

 

[Joerg]

Pieter wrote:

On Fri, 02 Nov 2007 13:28:59 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

snip-a-lot
I will check the BF862 datasheet.
Got to go through Digikey because NXP's web site current can't find it
via the search box.
I never understood your rants about philips/nxp website. It's not that
bad.
It is bad and I'm definitely not the only one saying that. Old saying
here in the US: A product is only as good as potential customers think
it is.

I had the same problem. Google helped and found it on the website.
Notice that the datahseet still says "Philips".

Just plug BF862 in the top right search box and it comes out immediately.
Well, today it does, maybe somebody reads these posts ;-)
Yesterday it clearly did not, and I've tried multiple times. So has Uwe
Bonnes here in this thread. That NXP site isn't reliable IMHO.

So a temporary problem.

Things is, they've got a lot of those. And some not so temporary ones.

For example, right now when I go onto their homepage the whole center is
blank. I cannot get into product categories anymore. Brand new Firefox
browser, so that's not the issue. Not good.

My problem lies mostly in the 0-10Hz range, parts do get get specified
there.
Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.
You can have a grasp of what it does by looking at the BF861 fig. 14
Not the best for low frequency.
From the NF figure in the table the parts seemt o be much different
though. But yes, the trend down there does not look good at all.

--
Regards, Joerg

http://www.analogconsultants.com/

 

[Pieter]

On Fri, 02 Nov 2007 14:34:07 -0700, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Pieter wrote:
On Fri, 02 Nov 2007 13:28:59 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

snip-a-lot
I will check the BF862 datasheet.
Got to go through Digikey because NXP's web site current can't find it
via the search box.
I never understood your rants about philips/nxp website. It's not that
bad.
It is bad and I'm definitely not the only one saying that. Old saying
here in the US: A product is only as good as potential customers think
it is.

I had the same problem. Google helped and found it on the website.
Notice that the datahseet still says "Philips".

Just plug BF862 in the top right search box and it comes out immediately.
Well, today it does, maybe somebody reads these posts ;-)
Yesterday it clearly did not, and I've tried multiple times. So has Uwe
Bonnes here in this thread. That NXP site isn't reliable IMHO.

So a temporary problem.


Things is, they've got a lot of those. And some not so temporary ones.

For example, right now when I go onto their homepage the whole center is
blank. I cannot get into product categories anymore. Brand new Firefox
browser, so that's not the issue. Not good.


My problem lies mostly in the 0-10Hz range, parts do get get specified
there.
Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.
You can have a grasp of what it does by looking at the BF861 fig. 14
Not the best for low frequency.
From the NF figure in the table the parts seemt o be much different
though. But yes, the trend down there does not look good at all.

Hi,

It works over here. So I checked their code. I think it is a bad idea
to make code system dependent. This is a part of NXP system detection
(I changed formatting so I could read it), it checks for M$, opera,
mac:

var bCompatible = false;
if ( document.all
&& !navigator.userAgent.toLowerCase().match(/opera/)
&& !navigator.appVersion.match(/mac/i) )
{ try { bCompatible =
true && new ActiveXObject('Microsoft.XMLHTTP');
}
catch(e){}
}
else { bCompatible =
window.controllers
&& (parseInt(navigator.productSub)>20031001)
&& new XMLHttpRequest();
}
if (!bCompatible)
{ location.href = "/indexnc.html"; //INDEX Non Compatible
}

I wonder what system the developer tests it on? Computersystems that
are protected may not give out enough browser information. Do you use
firewll, anonymizer, privacy protector etc?

Pieter

 

[Joerg]

Pieter wrote:

On Fri, 02 Nov 2007 14:34:07 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Pieter wrote:
On Fri, 02 Nov 2007 13:28:59 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

snip-a-lot
I will check the BF862 datasheet.
Got to go through Digikey because NXP's web site current can't find it
via the search box.
I never understood your rants about philips/nxp website. It's not that
bad.
It is bad and I'm definitely not the only one saying that. Old saying
here in the US: A product is only as good as potential customers think
it is.
I had the same problem. Google helped and found it on the website.
Notice that the datahseet still says "Philips".

Just plug BF862 in the top right search box and it comes out immediately.
Well, today it does, maybe somebody reads these posts ;-)
Yesterday it clearly did not, and I've tried multiple times. So has Uwe
Bonnes here in this thread. That NXP site isn't reliable IMHO.
So a temporary problem.

Things is, they've got a lot of those. And some not so temporary ones.

For example, right now when I go onto their homepage the whole center is
blank. I cannot get into product categories anymore. Brand new Firefox
browser, so that's not the issue. Not good.


My problem lies mostly in the 0-10Hz range, parts do get get specified
there.
Unfortunatley many parts such as the BF862 aren't spec'd for noise down
there.
You can have a grasp of what it does by looking at the BF861 fig. 14
Not the best for low frequency.
From the NF figure in the table the parts seemt o be much different
though. But yes, the trend down there does not look good at all.

Hi,

It works over here. So I checked their code. I think it is a bad idea
to make code system dependent. This is a part of NXP system detection
(I changed formatting so I could read it), it checks for M$, opera,
mac:

var bCompatible = false;
if ( document.all
&& !navigator.userAgent.toLowerCase().match(/opera/)
&& !navigator.appVersion.match(/mac/i) )
{ try { bCompatible =
true && new ActiveXObject('Microsoft.XMLHTTP');
}
catch(e){}
}
else { bCompatible =
window.controllers
&& (parseInt(navigator.productSub)>20031001)
&& new XMLHttpRequest();
}
if (!bCompatible)
{ location.href = "/indexnc.html"; //INDEX Non Compatible
}

I wonder what system the developer tests it on? Computersystems that
are protected may not give out enough browser information. Do you use
firewll, anonymizer, privacy protector etc?

Yes, a hardware firewall. And that's not going to come down just because
the web designers at NXP lack competence. It wasn't much better in the
Philips days. Back then they did not understand what a latency is. It's
almost 200msec from Europe to the US, mostly it hung up when they did
their stupid stock quote lookup. But with the change to NXP it became a
whole lot worse. With older browsers the NXP site doesn't work at all,
you get a blank screen all the time. And I can't possibly tell my
clients "Oh, let's just install another browser...". We just move on to
TI, National, ON, ST or other vendors.

Anyhow, I just pretty much quit using their parts. So have lots of
others out here. There are enough competitors with more competence in
the dissemination of info about their products.

--
Regards, Joerg

http://www.analogconsultants.com/