Replacing tda7294 with tda7296???

[scottycam]

I have an amp that has blown a tda7294 chip and I have a few spare tda7296 chips.

I assume it will still work fine using the tda7296 chip but what type of difference will occur? will it be noticeable?

Should I just order a tda7294 and wait for that to arrive instead?

I am also assuming that the tda7294 is a better chip, but by how much?

Thanks,
Scott

 

[pmbrunelle]

They look very similar in most respects. However:

TDA7294:
Vsupply = +/- 50V
Iout = 10 A

TDA7296:
Vsupply = +/- 35V
Iout = 5 A

I somehow doubt the TDA7294 would have been chosen if TDA7296 were adequate for the job.

I would wait for the correct part.

 

[scottycam]

Thanks for the reply pmbrunelle,

I am going to order a new chip now and wait for that.

I have just one question, what is the second line of writing for on the chip and does it matter if it is completely different to my blown chip. They are both TDA7294 but the second line is different on pretty much any chip I can find to buy.

Here is an image of a random TDA7294 to show what I mean

The first and third line on many of the chips I can buy are the same as mine but all have different numbers/letters for the second line.

 

[abraxalito]

No, that line doesn't make any difference to the chip - its normally some kind of lot/batch code for the benefit of manufacturer traceability.