Is this a real TDA1541A? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th April 2004, 08:35 AM   #1
pop11 is offline pop11  Canada
diyAudio Member
 
Join Date: Mar 2003
Location: Canada
Default Is this a real TDA1541A?

It does not have the "Philips" logo on it, is this real?

Please help
Attached Images
File Type: gif tda1541a.gif (32.8 KB, 7929 views)
  Reply With Quote
Old 20th April 2004, 08:44 AM   #2
elib is offline elib  China
diyAudio Member
 
Join Date: Oct 2002
Location: China
It's at least a remarked one. I assume it's a TDA1541 of 1987.
Attached Images
File Type: jpg 1541s.jpg (36.5 KB, 7610 views)
  Reply With Quote
Old 20th April 2004, 08:47 AM   #3
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
That sure is a remarked one.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 20th April 2004, 08:53 AM   #4
pop11 is offline pop11  Canada
diyAudio Member
 
Join Date: Mar 2003
Location: Canada
So it is a fake? Or just remark of a normal TDA1541A?
  Reply With Quote
Old 20th April 2004, 08:58 AM   #5
Bricolo is offline Bricolo  France
diyAudio Member
 
Bricolo's Avatar
 
Join Date: Nov 2002
Location: Grenoble, FR
What do you mean by "remarqued" ?
-a fake chip with 1541 written on it
-a genuine 1541, but with new writing on it (why?)


And it it's solution 2, the marking date becomes the production date? That's odd!
  Reply With Quote
Old 20th April 2004, 09:10 AM   #6
diyAudio Member
 
Andypairo's Avatar
 
Join Date: Sep 2002
Location: near Milano , Italy
Quote:
Originally posted by pop11
So it is a fake? Or just remark of a normal TDA1541A?
Making a fake (working) IC is luckily more complicated than making a fake transistor, IMHO there are 2 possibilities

1- Someone has around a overstock of plain 1541s (the writings are way too similar to Elib's photo of 1541) or inferior specification chips and, seen the great interest on this product, rebrands them as "1541A" with later production code

2- The fab that made the double crowns opened again but without the Philips logo (joke)

To see how good it is (and if it works at all) the only way is to try and compare it with a reguar 1541A. I'm sure that someone has a horny socket ready to be plugged with such a chip.
If you get to make a comparison, please let us know.

Cheers

Andrea
  Reply With Quote
Old 20th April 2004, 09:30 AM   #7
diyAudio Member
 
Join Date: Jul 2001
Location: The Netherlands
Hi,

I thought there was another compagny that made TDA1541A chips, as philips alternative, maybe that's what you have?


cya,
Thijs
  Reply With Quote
Old 20th April 2004, 09:43 AM   #8
guido is offline guido  Netherlands
diyAudio Member
 
guido's Avatar
 
Join Date: Mar 2002
Location: diepe zuiden
Looking at elib's picture you can see that the taiwan is marked
RSH. Seems the factory code is HSH for holland and RSH for taiwan.

Your chip is HSH-97, but in 1997 they were not produced anymore in holland as far as i know.

So yes, it must be fake.

Try to plug in in a (I2S) player.

If it works without pin4 connected, it's an A version.
If pin4 needs to be connected to get sound, it's non A (output buffer latch).

Also the A version needs the cap on pin 16/17, the non A version
does not need one. The A version should sound crap without cap (dem oscillator not running).

Second source for 1541 would have been Wolfson as far as i can remember. Think they made something similar.

mvg,
__________________
GuidoB
  Reply With Quote
Old 20th April 2004, 09:55 AM   #9
Bricolo is offline Bricolo  France
diyAudio Member
 
Bricolo's Avatar
 
Join Date: Nov 2002
Location: Grenoble, FR
You'll also notice that the print font isn't the same as the true philips one
  Reply With Quote
Old 20th April 2004, 09:56 AM   #10
hacknet is offline hacknet  Singapore
diyAudio Member
 
Join Date: Nov 2002
Location: sg
yes i`ve seen tda1541s that look like that they are of the older batches. more than 10 years old i guess.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is this a real TDA1541A? pop11 Digital Source 1 24th August 2006 07:16 AM
tda1541a-s1,real or fake daniu Digital Source 0 5th July 2004 01:14 AM


New To Site? Need Help?

All times are GMT. The time now is 05:58 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2