TAS6422E-Q1: difference between tas6424-q1 and tas6424E-q1

Elec Cheng

Part Number: TAS6422E-Q1
Other Parts Discussed in Thread: TAS6424, TAS6424E, , TAS6422-Q1

Hi Expert,

Our customer want to know the difference between tas6424 and tas6424E. Previously they design the schematic based on TAS6422E-q1. But now they would like to use TAS6422-Q1 instead. As you can see below two pics, there are several different places, mainly PVDD and GND. Their main concern is pin2pin compatible. To be more specific, there are two situations：

TAS6422-q1 placed on TAS6422E-q1 pads. The PVDD, GND and GVDD1 pins will be "NC". Will this cause bad effect for function?
TAS6422E-q1 placed on TAS6422-q1 pads. The NC pins will be connected to PVDD, GND and GVDD1. Will this cause bad effect for function?

TAS6422-q1

TAS6422E-q1

Thanks for help!

BR,

Elec Cheng

over 2 years ago

0 Yanming Gong over 2 years ago

TI__Mastermind 19410 points

Hi Elec,

TAS6422E and TAS6422 are same die as TAS6424. For TAS6424E, the non-used channels FETs are dug out, so there are more NC pins.

For TAS6422, non-used channels are still in device. So GVDD1 and some PVDD pins should be connected as datasheet.

Regards,

Derek

0 Elec Cheng over 2 years ago in reply to Yanming Gong

TI__Expert 7055 points

Hi Derek,

So from my understanding, it's fine for the NC pins on TAS6422E-q1 to connect to PVDD and GVDD1. But it's not ok to leave the PVDD and GVDD1 pins on TAS6422-q1 floating. Am I right? The reason why I ask this, is that our customer now mainly considers the PIN2PIN compatible. Thanks!

BR,
Elec Cheng

0 Yanming Gong over 2 years ago in reply to Elec Cheng

TI__Mastermind 19410 points

Hi Elec,

Yes, you are correct.

Regards,

Derek

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TAS6422E-Q1: difference between tas6424-q1 and tas6424E-q1