3xOPA548 on 35vDC+/-? - diyAudio
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Old 11th December 2005, 12:33 PM   #1
kinser is offline kinser  Israel
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Default 3xOPA548 on 35vDC+/-?

Hi all,

So i have finished my 2 channle OPA541 amp for my main speakers!

Now i want to make a 3 channle amp for my rear and center speakers.
So i figured OPA548 becuase i dont have any 541's left and all i have is a 250va 25-0-25 trafo. ive searched the forum a couple of times but ddnt find out what voltage these little chips should run at or whats the max they can take.
So if someone knows, can i run 3 of them at 35vDC +\-? and if not then what is the recomended voltage?

Thanks,
Kinser
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Old 11th December 2005, 12:49 PM   #2
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It is always better to have a look at datasheet of any chip under considertion.
OPA548 Data sheet suggests an operating voltage of 8 to 60, which in dual supply mode would be +/- 4 to +/- 30 volt, so i think u better give thse chips recomended supply +/-35 i think that may blow the chips.
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Old 11th December 2005, 01:04 PM   #3
kinser is offline kinser  Israel
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Thanks,
I just ddnt know what source to belive
do you think i could use a couple of regulators to bring the voltage down?
Thanks,
Kinser
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