Headphone Amp IC

[Tenson]

Can anyone identify this headphone amp IC?

The markings say AAX IBV or perhaps 1BV. It has 4 pins on each side.

An externally hosted image should be here but it was not working when we last tested it.

 

[Yoles]

Looks like MAX97220
MAX97220A pdf, MAX97220A description, MAX97220A datasheets, MAX97220A view ::: ALLDATASHEET :::

 

[Tenson]

Thank you! I thought it might be too, but Max does not come with legs on the outside, right?

However, maybe what I see are not legs but only solder? Difficult to know.

 

[Yoles]

You mean that Max chips could be BGA only? Oh no, exactly near a half, or more Maxim headphone amplifier chips has a planar type of package. And according to datasheet MAX97220 has exactly that type of package as on the photo.
P.S. I have the same Bluetoth module, and wondered about that headphone driver too )

 

[sgrossklass]

Cool little IC btw - Creative use these a lot in soundcards and other contemporary Sound Blaster products, and they perform really well for a teeny tiny chip. Certainly much better-behaved than the LME49726 that the Asus Xonar U7 uses...