Is this a real TDA1541A? - Page 2

weissi · 20th April 2004, 11:44 AM

I think this chips were originally produced for Sony, etc.....
I´ve seen some Sony Players with tda1541 inside, no one had the philips logo...

pop11 · 20th April 2004, 12:33 PM

TDA1541 (non A) from Sony players:

pop11 · 20th April 2004, 12:35 PM

more ...

Tubeee · 20th April 2004, 05:36 PM

Well guys,

I have some at hand with prefix HHH and HBH but most of TDA1541A I have marked HSH like everybodys'.

The HHH one has been in my home for more than 15 years, so it is original. Where was this HHH produced? sounded excellent!!!

The HBH is from Germany, I believe is true one (coz from a famous huge distributor) but date coded 96???

Another chip which seems nobody mentioned before is marked NTE2057, if you check the dadasheet of NTE2057 you will find that NTE2057 is TDA1541 (A??).

NTE was once the Philips company in north America; so, is it possible the remarked one is from NTE.

Something starage, if you search and ask the availability of NTE2057 you will find that you still can get it now but the price is very high. What rank is NTE2057? TDA1541, A, R1, S1

Bricolo · 20th April 2004, 06:01 PM

I'd say it's the non A version
http://www.nteinc.com/specs/2000to2099/pdf/nte2057.pdf

since the datasheet refers to an internal oscillator

homer09 · 22nd April 2004, 01:44 AM

is the non A TDA1541 alot worse than the TDA1541A? what are the differences? i have a non A sitting in my philips cd650. which other ICs are good, so i could keep my eye on good buys?

HtP · 25th April 2004, 04:14 PM

It is a development sample.

regards,

guido · 25th April 2004, 10:23 PM

hihihihi

Everybody gave their thoughts, but nobody thought of this possiblity

So you got a late TDA1541A

jean-paul · 25th April 2004, 10:25 PM

A development sample from 1997 !? SAA7321 and/or SAA7350 ( or others, forgot the count with 1 bit chips really ) were in development then, isn't it ?

If I look at the pictures in post #1 and post #2 I see they are marked exactly the same except for the datecode which is 10 years later and the A, hence my suspicion about the datecode and genuinity. Also font and ink seems different. The same chip in post #2 in the lower right corner, what about that one ? Is that a development sample from 1987 then ? ( I suppose the 4182 code says it all ).

Bernhard · 26th April 2004, 03:29 PM

20th April 2004, 11:44 AM	#11
weissi diyAudio Member Join Date: Sep 2002 Location: Austria	I think this chips were originally produced for Sony, etc..... I´ve seen some Sony Players with tda1541 inside, no one had the philips logo... __________________ regards / servus

25th April 2004, 04:14 PM	#17
HtP diyAudio Member Join Date: Apr 2004 Location: Eindhoven	It is a development sample. regards, __________________ Henk ten Pierick

25th April 2004, 10:23 PM	#18
guido diyAudio Member Join Date: Mar 2002 Location: diepe zuiden	hihihihi Everybody gave their thoughts, but nobody thought of this possiblity So you got a late TDA1541A __________________ GuidoB

25th April 2004, 10:25 PM	#19
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: The Netherlands	A development sample from 1997 !? SAA7321 and/or SAA7350 ( or others, forgot the count with 1 bit chips really ) were in development then, isn't it ? If I look at the pictures in post #1 and post #2 I see they are marked exactly the same except for the datecode which is 10 years later and the A, hence my suspicion about the datecode and genuinity. Also font and ink seems different. The same chip in post #2 in the lower right corner, what about that one ? Is that a development sample from 1987 then ? ( I suppose the 4182 code says it all ). __________________ It's only audio

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20th April 2004, 05:36 PM	#14
Tubeee diyAudio Member Join Date: Jun 2003	Well guys, I have some at hand with prefix HHH and HBH but most of TDA1541A I have marked HSH like everybodys'. The HHH one has been in my home for more than 15 years, so it is original. Where was this HHH produced? sounded excellent!!! The HBH is from Germany, I believe is true one (coz from a famous huge distributor) but date coded 96??? Another chip which seems nobody mentioned before is marked NTE2057, if you check the dadasheet of NTE2057 you will find that NTE2057 is TDA1541 (A??). NTE was once the Philips company in north America; so, is it possible the remarked one is from NTE. Something starage, if you search and ask the availability of NTE2057 you will find that you still can get it now but the price is very high. What rank is NTE2057? TDA1541, A, R1, S1

20th April 2004, 06:01 PM	#15
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	I'd say it's the non A version http://www.nteinc.com/specs/2000to2099/pdf/nte2057.pdf since the datasheet refers to an internal oscillator

22nd April 2004, 01:44 AM	#16
homer09 diyAudio Member Join Date: Jan 2004 Location: Montreal	is the non A TDA1541 alot worse than the TDA1541A? what are the differences? i have a non A sitting in my philips cd650. which other ICs are good, so i could keep my eye on good buys?

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