spatial array IC

Kevin Chang2

Prodigy 230 points

Other Parts Discussed in Thread: LM48901, TAS3108, LM48903, TAS2563, TAS2562, TAS6424-Q1

I would like to design speaker array using 6 or 8 speakers.

I know TAS3108 and LM48901 are for this kind of application. But they are not supported now.

Are there other spatial array IC available in TI?

Kevin

over 5 years ago

0 Luis Fernando Rodriguez S. over 5 years ago

TI__Guru* 84915 points

Hi, Kevin,

Our team will take a look at this and will answer as soon as possible.

Best regards,
Luis Fernando Rodríguez S.

0 Ivan Salazar over 5 years ago

TI__Guru** 113805 points

Hi Kevin,

The highest channel count for our speaker drivers is 4 speakers. Here you can find some of those options with analog, digital or PWM inputs:

http://www.ti.com/audio-ic/amplifiers/speaker-amplifiers/products.html#p1055max=4

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 Kevin Chang2 over 5 years ago in reply to Ivan Salazar

Prodigy 230 points

Hi Ivan

Thanks for your answer.

Is any any design tool available to combine 2 chips together to become a spatial array, something like LM48901 and LM48903?

Kevin Chang

0 Ivan Salazar over 5 years ago in reply to Kevin Chang2

TI__Guru** 113805 points

Kevin,

You can combine some of the devices listed in my previous entry.

Or you can also use several mono devices, like TAS2563 or TAS2562. These devices have selectable I2C address so you can control each of them individually. Regarding audio streaming, you can use TDM format which allows several channels on the same bus.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 Kevin Chang2 over 5 years ago in reply to Ivan Salazar

Prodigy 230 points

Hi Ivan,

Thanks for your direction.

I found TAS6424-Q1 also have four I2C addresses and 4/8 channel TDM. Is it feasible to combine two TAS6424-Q1 for a 8-speaker spatial array?

Another question is how to set time delay for each channel?

Kevin

0 Ivan Salazar over 5 years ago in reply to Kevin Chang2

TI__Guru** 113805 points

Kevin,

Yes, you can combine 2 TAS6424-Q1 for 8 speaker array. Regarding "time delay" I assume you mean the data for each channel, correct?
You usually set a specific data and slot length, eg. 32-bit slot length and 24-bit data length. The ratio between BCLK and WCLK must be the correct one for the channel count and slot length being used. Once all the above is correct, the device can select which slots will be used as data for each channel, something like shown in Table 1 from TAS6424-Q1 data sheet.

TAS6424-Q1 is supported by a different team than mine. You can post a new thread specifically about TAS6424-Q1 to get the proper support.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

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spatial array IC