TAS6424-Q1: Noted: TAS6424-Q1 issues on digital audio amplifiers

Hi Lizelle,

have you followed all the guidelines given in section 12 of datasheet (4-layer PCB, 70µm copper, solid ground plane, a.s.o.)? Do you have the same pi-filter at the power supply input like the EVM board (330µF, 4.7µH, 4.7µF, 82nF, 220pF)?

Kai

Hi  Kai:

         Thanks for your kind repaly.I have already follow all guideline given in section 12 of datasheet.(8 -layer PCB).Could you give me some suggestions on question 1 .

         Semisky must use AP test because our performance index test does not meet the standard . We have ordinary instruments but no AP with a filter so that there is an error in our R&D and                  production line testing .TI recommends that we may increase the external filter to test machine .Kindly provide parameters to make sure that our index is unified,Please.

         Will waiting for your reply .Take care always .Have a nice day!

Best wishes,

lizelle 

Hi Lizelle,

May i understand more clearly about your question. You want to add an external filter before the test equipment, so you ask how to setup?

Would you let me know your email address, we can talk offline or discuss with phone call. That would be easier.


Dylan

Hi Dylan,

We have an external filter, the main problem of us is the standard document: we have no standard document for us yet. Semisky used to get parameters from TI but could not form a basis. Could you provide written document like schematic diagram as a basis for our production and development?

Dear Dylan,your feedback is welcome . Feel free to send me a email direct on songliping@semisky.com .Take care always.

Best wishes,
Lizelle