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Old 3rd February 2004, 01:28 PM   #1
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Default tda1554 amp attempt...

Hello ive bought a tda1554 to try in my car as a replacement amp.

Some issues-
1) the pdf file doesnt mention heatsinking requirements.
so im going to just try any heatsink i can see in the store that looks substantial

2)Im going to try the suggested schematic(very simple!)
which comprises of about 5 things.
-Question- will a 10k log pot do on the output?-as i dont see provision for volume,am presuming this will work fine.

Ive never used a chipamp but just need some basics

I presume that the 'substrate' ground means the back part of the chip,that i will heatsinking ,meaning the heatsink will be at ground potential,so i should be careful with my +12v....

its very simple questions really,but i simply dont know for sure and dont want to fry my ~9$ US chip
Cheers!
semiconductor data
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Old 3rd February 2004, 01:43 PM   #2
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Also i notice this design has slightly different component values etc... its from popular mechanics,i guess il copy that one.

link
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Old 17th March 2004, 04:40 PM   #3
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I also have a TDA1554, but I use it as a power amp at home. For the heatsink, I use an aluminum one 9cm wide, 6cm tall, and with 12 ribs projecting 1.2cm out the back. Overall, the aluminum is 3mm thick. You might want to use a larger one than that, since mine heats up very quickly. There are better amps out there. Mine sounds a bit washed out, but maybe it's just my room.
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Old 19th August 2004, 10:35 PM   #4
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Default Parts

Hi guys

Where would one order a TDA1554, I'm trying to get my hands on one for my car. They run on a single supply, so I figure tyhis would be the simplest solution for 4 chan. audio.

if you have a surplus one to sell, let me know.

thank much,
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Old 21st August 2004, 02:52 PM   #5
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Hi,

try
http://reichelt.de

2,20Eu only.



Carsten
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Old 21st August 2004, 03:38 PM   #6
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use a 50-100k pot on the input if u want a vol. control...
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Old 29th August 2006, 08:37 PM   #7
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awwww nutz i made one of these amps a while back but it stopped workin all of a sudden, i suspect i blew the chip by plugging the power in the wrong way ... anyway i need another chip but i dont understand german so i cant use that site is there an english one anyone knows about. Tnx
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Old 3rd June 2008, 04:48 PM   #8
kano is offline kano  Philippines
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Question how do i check the chip if i already fryed it?

3 days ago i built the ampl using tda 1554 it made a loud and audible sound for a while but obviously it was putting out only half of the output signal. then it went silent and no matter what modifications i do the bird just won't sing anymore. How do i check if i already fryed my chip? it still gets hot and a small sound can be heard is it dead already? I'm new in electronics learned it only through the internet i would really appreciate it guys if someone could spare some time to help me thanks.
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Old 7th June 2008, 07:51 PM   #9
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Was it attached to a heatsink when you powered it? As the chip heats up as soon as it is powered. If not, this could have dammaged it. If you have a schematic, so we could see a clear indication of any problems, this would help .
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Old 16th October 2009, 07:50 PM   #10
chingyg is offline chingyg  South Africa
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I am just wondering about the heat sinking of this chip, I have am planing on building one tomorrow but have not test it on full power yet (neighbors in the apartment block hate me enough already). I am currently using an CPU heat sink with its fan attached but I only super glued the chip onto the aluminum under some pressure, Is that fine?

Because the 2 screw's spacing I am having trouble with a normal heat sink.

It would only go on to an old ATX PSU's heat sink, is that enough thermal mass to keep the amp cool on max power?
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