Tda1541 R1??

[HeadSh0T]

I just got some of these in the mail. Does anybody know how these differ from plain vanilla TDA1541A ??

[jean-paul]

Their somewhat better in specs but not as good as S1/S2. IIRC they were meant for the Japanese market.

[Elso Kwak]

Originally posted by HeadSh0T
I just got some of these in the mail. Does anybody know how these differ from plain vanilla TDA1541A ??

Hi Headshot,
Go to:
http://www.semiconductors.philips.com/
Then search for TDA1541
Then click on DIGITAL (second line of found items)
The PDF-file contains specs of all versions of the TDA1541.
A or R1 is the lowest grade.
Hope this helps.

[HeadSh0T]

thanks elso..

i was kind of hoping jean-paul was correct..

[jean-paul]

I am correct. They are 1 dB better in THD+N at -60 dB. Just like I said: somewhat better than the normal TDA1541A.

[rbroer]

Again ,
In degrading order:

TDA1541A-S2
TDA1541A-S1
TDA1541A
TDA1541A-R1
TDA1541

The gap from any A version to the TDA1541 is quite big; differences between the A versions are minor


FYI;

S stands for Selected specs
R stands for Relaxed specs

[jean-paul]

Rudolf, please see:

http://www.semiconductors.philips.co...us/DIGITAL.pdf See page 17.

In degrading order :

TDA1541A-S2
TDA1541A-S1
TDA1541A-R1
TDA1541A
TDA1541

R1 specs are slightly better than A-only according to Philips and I think they should know what they produce(d).

I used to have a Sony cdplayer which had a TDA1541A-N5. Never found info on that one.

[tonitze]

What about Tda1541a with S1 but without the crown? I believe mine is a remarked Tda1541a. What i mean is fake Tda1541a-S1.
What i saw on the net is that all Tda1541a-S1 is with a crown on it but not mine. Some body might have remark this i guess.
Anybody have the same tda1541a like mine?

[HeadSh0T]

this is what's written on the DIP package...

"TDA1541 R1"

no "A"...
there's no Philips logo either...

weird..

[jean-paul]

Just reread what you wrote and I mistakenly read TDA1541A-R1. Probably because you asked what the differences are with plain vanilla TDA1541A. The R1 of the latter is slightly better and the best are S1 and the very rare S2. I gave up hope finding a S2. Seems like Mr. Zanden has them all

I did not even know of TDA1541 R1, but since it's without the A it is practically useless. TDA1541A is a "bugfixed" version of the chip because there were problems with TDA1541. TDA1541A sounds a lot better too.

You should know that these TDA1541 only work with SAA7220PA.

TDA1541A only works with SAA7220PB.

This counts only if you want to use them in a cdplayer with 4 x Fs.

The rebadging of these chips is new to me but some people do anything to make money. Real TDA1541A-S1 are branded with the Philips logo on the left, a crown right-under and S1 on the right upper side. Mine are coded with TDA1541A, in the second line: 11113 and in the third line HSH8910 2. The printing of S1 and the crown are in a slightly different white. There is no text underneath the chip.