Best way to connect multiple TDA1543? - diyAudio
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Old 1st September 2003, 07:46 AM   #1
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Default Best way to connect multiple TDA1543?

Got any experience with connecting eg. four TDA1543 together?

I have some schematics that describes a direct piggy-backing and some where each IC has its own local decoupling cap. The first method would probably be the cheapest and simplest, but since I am just about to put together a non-os DAC I would like to hear your opinion.
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Old 1st September 2003, 08:52 AM   #2
Bricolo is offline Bricolo  France
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what is piggy-backing? soldering the 2nd on top of the 1st directly pin to pin?

This looks like an easy solution. With no need for pcb modifications. Also short paths.


Since the 2 chips will be so close together it will be difficult to decouple them individually. Use a larger (2x) cap, or 2 paralleled



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Old 1st September 2003, 09:20 AM   #3
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Thank you for your 2 cents!
Yes, piggy-backing is soldering directly on top of each other. Sounds simple. I am a little worried about the cooling of the chips if they are put on top of each other.
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Old 1st September 2003, 09:21 AM   #4
Taco is offline Taco  Netherlands
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I have a TNT-audio convertus that's with 4 TDA1543. Each chip has his own decoupling.


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