TBA570 vs TBA570A

Hello Radiofriends,

please who know the difference between the "A" version ( TBA570A ) and the normal type TBA570?

On the original 1977 Philips IC's handbook ( page 66 )  there is only the sentence : "In its standard applications, the TBA570A can replace the TBA570"

Thanks !

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They did some minor changes in the AF part of the circuit to make it more stable and powerful (driver).
Details can be seen in the circuit diagrams; I just uploaded the slightly different diagram of the TBA570A, see pins 10...13 area.
Hope that helps.
G.S.

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Hello Herr Stabe,

thanks indeed for you informations, very useful for me! Best regards!

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