Intersil ICL8048 log amp replacement?

L

Lostgallifreyan

Guest
Intersil say there is no recommended replacement from them for the ICL8048
monolithic logarithmic amplifier. Does anyone know of something similar or
better, in production, from anyone else?
 
Lostgallifreyan wrote:

Intersil say there is no recommended replacement from them for the ICL8048
monolithic logarithmic amplifier. Does anyone know of something similar or
better, in production, from anyone else?
Click to expand...
Look at ti.com for log amps: log 101, log 104, log 112


HTH

Jorgen
 
Jorgen Lund-Nielsen <jorgen.lund-nielsen@xyz123desy.de> wrote in
news:gi55qg$5k1lb$1@claire.desy.de:

Lostgallifreyan wrote:

Intersil say there is no recommended replacement from them for the
ICL8048 monolithic logarithmic amplifier. Does anyone know of something
similar or better, in production, from anyone else?


Look at ti.com for log amps: log 101, log 104, log 112


HTH

Jorgen
Click to expand...
Nice. The leering leaf strikes again. (Look at the TI logo, this will
entirely explain itself..)
Thanks. :)

I'm still open to more suggestions, even though these fit, I'm interested to
see that analog is evidently not as dead as I've sometimes been told. Knowing
which firms dedicate to IC's like these will help me find other stuff later.
 
On Dec 15, 1:22 am, Lostgallifreyan <no-...@nowhere.net> wrote:
Jorgen Lund-Nielsen <jorgen.lund-niel...@xyz123desy.de> wrote innews:gi55qg$5k1lb$1@claire.desy.de:

Lostgallifreyan wrote:

Intersil say there is no recommended replacement from them for the
ICL8048 monolithic logarithmic amplifier. Does anyone know of something
similar or better, in production, from anyone else?

Look at ti.com for log amps: log 101, log 104, log 112

HTH

Jorgen

Nice. The leering leaf strikes again. (Look at the TI logo, this will
entirely explain itself..)
Thanks. :)

I'm still open to more suggestions, even though these fit, I'm interested to
see that analog is evidently not as dead as I've sometimes been told. Knowing
which firms dedicate to IC's like these will help me find other stuff later.
Click to expand...
There are lots of the intersil parts (ICL8048] in chip brokers
inventories...actually some of them have
date codes in the 2004 era, and inventories are in the thousands for
this part number.

kw
 
kilowatt <nosparts@okanagan.net> wrote in news:ad710df9-3c2b-4824-b742-
845d0f9a12f9@i24g2000prf.googlegroups.com:

in chip brokers
inventories
Click to expand...
Not interested. Why do you think I said 'in production'?
 
On Sun, 14 Dec 2008 19:49:36 -0600, Lostgallifreyan
<no-one@nowhere.net> wrote:

Intersil say there is no recommended replacement from them for the ICL8048
monolithic logarithmic amplifier. Does anyone know of something similar or
better, in production, from anyone else?
Click to expand...
How many do you need?

P.
 
P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:6pmsk45lbs1edn1gs59rgngr517uk5g9pl@4ax.com:

On Sun, 14 Dec 2008 19:49:36 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

Intersil say there is no recommended replacement from them for the ICL8048
monolithic logarithmic amplifier. Does anyone know of something similar or
better, in production, from anyone else?


How many do you need?

P.
Click to expand...
None. My question was answered by Jorgen, who pointed me to Texas
Instruments' LOG101 (I chose LOG112 for my needs). I'm not interested in
attempts to sell me a part I already know is discontinued. Strange, you
suggesting that while posting warnings of counterfeits. Most people anxious
to avoid those would be equally reluctant to respond to an offer like yours
here.
 
On Sun, 21 Dec 2008 09:10:31 -0600, Lostgallifreyan
<no-one@nowhere.net> wrote:

P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:6pmsk45lbs1edn1gs59rgngr517uk5g9pl@4ax.com:

On Sun, 14 Dec 2008 19:49:36 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

Intersil say there is no recommended replacement from them for the ICL8048
monolithic logarithmic amplifier. Does anyone know of something similar or
better, in production, from anyone else?


How many do you need?

P.


None. My question was answered by Jorgen, who pointed me to Texas
Instruments' LOG101 (I chose LOG112 for my needs). I'm not interested in
attempts to sell me a part I already know is discontinued. Strange, you
suggesting that while posting warnings of counterfeits. Most people anxious
to avoid those would be equally reluctant to respond to an offer like yours
here.
Click to expand...
??????????????

I just asked how many you need? I never offered any parts, and was not
planning to do so. Only to show you where to get them.

So when people try to be helpful you insinuate they sell fake parts??

Nice.

P.
 
P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:v9btk4pqafjos44e4p13lpvp32ir4tfo7q@4ax.com:

On Sun, 21 Dec 2008 09:10:31 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:6pmsk45lbs1edn1gs59rgngr517uk5g9pl@4ax.com:

On Sun, 14 Dec 2008 19:49:36 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

Intersil say there is no recommended replacement from them for the
ICL8048 monolithic logarithmic amplifier. Does anyone know of
something similar or better, in production, from anyone else?


How many do you need?

P.


None. My question was answered by Jorgen, who pointed me to Texas
Instruments' LOG101 (I chose LOG112 for my needs). I'm not interested in
attempts to sell me a part I already know is discontinued. Strange, you
suggesting that while posting warnings of counterfeits. Most people
anxious to avoid those would be equally reluctant to respond to an offer
like yours here.

??????????????

I just asked how many you need? I never offered any parts, and was not
planning to do so. Only to show you where to get them.

So when people try to be helpful you insinuate they sell fake parts??

Nice.

P.
Click to expand...
Not insinuating anything. That's what I thought it looked like. I made it
clear I wanted in-production replacements, but you chose not to see that, so
it seemed reasonable to consider the evasion representative of a possible
desire to hook me up with a parts broker. If that's what I wanted, I'd have
asked.
 
On Sun, 21 Dec 2008 18:23:58 -0600, Lostgallifreyan
<no-one@nowhere.net> wrote:

P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:v9btk4pqafjos44e4p13lpvp32ir4tfo7q@4ax.com:

On Sun, 21 Dec 2008 09:10:31 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:6pmsk45lbs1edn1gs59rgngr517uk5g9pl@4ax.com:

On Sun, 14 Dec 2008 19:49:36 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

Intersil say there is no recommended replacement from them for the
ICL8048 monolithic logarithmic amplifier. Does anyone know of
something similar or better, in production, from anyone else?


How many do you need?

P.


None. My question was answered by Jorgen, who pointed me to Texas
Instruments' LOG101 (I chose LOG112 for my needs). I'm not interested in
attempts to sell me a part I already know is discontinued. Strange, you
suggesting that while posting warnings of counterfeits. Most people
anxious to avoid those would be equally reluctant to respond to an offer
like yours here.

??????????????

I just asked how many you need? I never offered any parts, and was not
planning to do so. Only to show you where to get them.

So when people try to be helpful you insinuate they sell fake parts??

Nice.

P.


Not insinuating anything. That's what I thought it looked like. I made it
clear I wanted in-production replacements, but you chose not to see that, so
it seemed reasonable to consider the evasion representative of a possible
desire to hook me up with a parts broker. If that's what I wanted, I'd have
asked.
Click to expand...
Brokers never sell small quantities, so they are not possible. And as
I wrote elsewhere some USA based companies are not reliable as they
source from China, and yes, they are brokers. I am against this, they
destroy the whole market with their garbage. But not all brokers are
bad, there are good ones that suffer from the bad ones too.

I assume you only need one or so. There are still several reliable
small electronics shops over here in Europe that have older parts in
stock. And I know from several what they have, so where to get, and I
sometimes help them. For free.

As you want a part for a new design, you should go for a new part that
is in production. And check if there are plans to make it obsolete.
Check how many are in stock at distributors, that will tell you how
well the part sells. Many in stock is a good sign.

P.
 
P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:8h2vk41tmjfpc0ta044bqgv9h71q1h29ap@4ax.com:

On Sun, 21 Dec 2008 18:23:58 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:v9btk4pqafjos44e4p13lpvp32ir4tfo7q@4ax.com:

On Sun, 21 Dec 2008 09:10:31 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

P. <dit3_werkt_ook_niet@hotmail.com> wrote in
news:6pmsk45lbs1edn1gs59rgngr517uk5g9pl@4ax.com:

On Sun, 14 Dec 2008 19:49:36 -0600, Lostgallifreyan
no-one@nowhere.net> wrote:

Intersil say there is no recommended replacement from them for the
ICL8048 monolithic logarithmic amplifier. Does anyone know of
something similar or better, in production, from anyone else?


How many do you need?

P.


None. My question was answered by Jorgen, who pointed me to Texas
Instruments' LOG101 (I chose LOG112 for my needs). I'm not interested
in attempts to sell me a part I already know is discontinued. Strange,
you suggesting that while posting warnings of counterfeits. Most
people anxious to avoid those would be equally reluctant to respond to
an offer like yours here.

??????????????

I just asked how many you need? I never offered any parts, and was not
planning to do so. Only to show you where to get them.

So when people try to be helpful you insinuate they sell fake parts??

Nice.

P.


Not insinuating anything. That's what I thought it looked like. I made
it clear I wanted in-production replacements, but you chose not to see
that, so it seemed reasonable to consider the evasion representative of
a possible desire to hook me up with a parts broker. If that's what I
wanted, I'd have asked.

Brokers never sell small quantities, so they are not possible. And as
I wrote elsewhere some USA based companies are not reliable as they
source from China, and yes, they are brokers. I am against this, they
destroy the whole market with their garbage. But not all brokers are
bad, there are good ones that suffer from the bad ones too.

I assume you only need one or so. There are still several reliable
small electronics shops over here in Europe that have older parts in
stock. And I know from several what they have, so where to get, and I
sometimes help them. For free.

As you want a part for a new design, you should go for a new part that
is in production. And check if there are plans to make it obsolete.
Check how many are in stock at distributors, that will tell you how
well the part sells. Many in stock is a good sign.

P.
Click to expand...
I will use one or two, but if the design works (I think it will, this part is
a simple signal scale conversion, the rest is done), then it might be made in
more numbers. Either by me, or by someone who I can get interested in doing
it in tens or a hundred. I know what I need, it's widely avaliable, I checked
that. Just got to buy the things when I have the money.. I doubt it's due for
obsolescense, and I think TI seem to be commited to the basic circuit even if
they change the number of uncommited op-amps, voltage references, or
whatever. What Jorgen showed me convinced me that TI aren't dropping them any
time soon. They'd have discontinued them right after buying Burr Brown if
they wanted to do that, I think. Singles are available in tens at several
places, in hundreds if reels are bought. I also think the future of those log
amps is more assured now than it once was. (Especially given that they can
reduce demands on digital input bit depth in many systems, like dynamic range
of 20 bits into a 12 bit ADC) Compared with the parts count and accuracy
problems of discrete parts to make one, this IC type's endurance is
understandable. The reason I am so wary of indirect sources is simple: they
cost enough to be vulnerable to counterfeiting. On the other hand, their
function is kind of hard to fake well. :)
 
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