TAS5707 PBTL Configuration

Sadanori Kato

Guru 36500 points

Other Parts Discussed in Thread: TAS5707

Hi,

Could you please give us your advice whether TAS5707 is able to be used with PBTL?

Best Regards,
Kato

over 9 years ago

0 Diego Melendez over 9 years ago

TI__Guru 57800 points

Hello Kato San,

Almost all the TAS570x devices can be used in PBTL mode, but the paralleling of speaker connections must be done after the output filter. PWM Output Mux Register (0x25) should be configured to send either Channel 1 or Channel 2 to the tied outputs.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Sadanori Kato over 9 years ago in reply to Diego Melendez

Guru 36500 points

Hi Diego-san,

Thank you for your quick response.
I understood that TAS5707 can output either channel1 or channel2 as PBTL.
So, can it output the mixing output such as "(channel1 + channel2)/2" ?

Best Regards,
Kato

0 Diego Melendez over 9 years ago in reply to Sadanori Kato

TI__Guru 57800 points

Hi Kato-San,

Unfortunately there is no way to mix Channel 1 and Channel 2 signals into PBTL mode with this device.

Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Sadanori Kato over 9 years ago in reply to Diego Melendez

Guru 36500 points

Hi Diego-san,

Thank you for your support.
I have an additional question.
Do you recommend to adder the audio analog output signals of the left channel and the right channel by connecting a speaker after the external LC filter if TAS5707 does not have the mixing function internally?

Best Regards,
Kato

0 Diego Melendez over 9 years ago in reply to Sadanori Kato

TI__Guru 57800 points

Hi Kato-San,

This device can only route one channel to the output in PBTL mode, there is no way to mix the signals internally. The output from different channels should not be tied externally by any reason.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Sadanori Kato over 9 years ago in reply to Diego Melendez

Guru 36500 points

Hi Diego-san,

Thank you for your reply even though you are busy.
I greatly appreciate your cooperation.

Best Regards,
Kato

Audio

Audio forum

TAS5707 PBTL Configuration