Class D Audio Amplifier IC Forum Discussions

[mattw2727]

Clarification question: 
On the Datasheet for the MA12040P Amp IC, pins 49 and 64 are designated as do not connect, as they are internally connected to 5V -- however, on the MA12040P Amp Eval board (and documented on the eval board schematic) these pins are externally connected to 5V.

We've got jumpers on our board so we can connect to 5V or not -- 
Can you provide guidance here?  Why is the eval board connecting these pins to external 5V, despite the Datasheet guidance?

[amusz]

Hello!

Pins 49 and 64 should not be connected. We have already corrected this in the new evaluation boards and reference designs.

Best regards

[Happy]

HI～～，I think 55, 49, and 64 pins can flexibly layout the DVDD connection layout on the PCB, I don't know if it's right!

[amusz]

Hello!

MA12040P is not recommended for new designs. Instead we strongly recommend MA2304DNS or MA2304PNS

Best regards

[mattw2727]

Thanks for the quick confirmation on the DNC - appreciate it!

Best regards, MW

[Happy]

我认为 55、49 和 64 引脚可以在 PCB 上灵活布局 DVDD 连接布局，不知道对不对！