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TAS2563: About function and usage

Masanori Tachibana
Genius 5350 points
Part Number: TAS2563
Other Parts Discussed in Thread: TAS2562

Hello support team,

I have some questions regarding TAS2563.

[Questions]
1. Does this IC have a function to control the Boost voltage according to the volume?

2. Does this IC have a function to shift the peak current for each L and R when using two ICs in stereo?

3. Could you teach me the details of acquisition method regarding the function to monitor the battery voltage.
- Sampling frequency
- Data processing after sampling (average calculation method etc.)

Sincerely,
M. Tachibana

  • 0
    TI__Guru* 84915 points

    Tachibana-san,

    My colleague will take a look at these questions and will answer as soon as possible.

    Best regards,
    Luis Fernando Rodríguez S.

  • 0
    TI__Guru** 109825 points

    Hi Tachibana-san,

    Let me comment on your questions below:

    1. Yes, this device has Class-H and Class-G configuration options for the boost. Details on the functionality of these modes is available in the data sheet of TAS2562 (similar device): http://www.ti.com/lit/ds/symlink/tas2562.pdf#page=49&zoom=100,0,200
    2. You could adjust the limiter of each device independently.
    3. VBAT is sensed by using an internal SAR ADC, the acquired data is available for feedback through DOUT in 10-bits or truncated to 8-bits. The details on VBAT measurement feedback through DOUT is available in data sheet tables 45 to 47 or at the top of page 38.
      The sampling frequency is set by internal clock dividers and it is recommended to keep the configuration provided by PPC3.

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

  • 0 in reply to Ivan Salazar
    Genius 5350 points

    Hi, Salazar-san,

    Thank you for teaching kindly.
    I almost understood.

    Sincerely,
    M. Tachibana

  • 0 in reply to Masanori Tachibana
    Genius 5350 points

    Hello Salazar-san,

    Excuse me, please let me ask a little more.

    1. VBAT is converted to 10-bit or 8-bit data by SAR ADC and output via the register or DOUT. Are these data RAW data? Or are those processed data such as average?

    2. How many bits is the resolution of this SAR ADC? 10-bit or more than 12-bit?

    3. Please teach me the specific frequency of sampling clock of SAR ADC.
    Is it obtained by dividing an externally input clock such as SBCLK or FSYNC?

    Sincerely,
    M. Tachibana

  • 0 in reply to Masanori Tachibana
    TI__Guru** 109825 points

    Tachibana-san,

    I'll comment on your questions below:

    1. This is raw data
    2. It is 10 bit SAR ADC
    3. The data will be sent out of SDOUT at the sample rate that the PCM interface is configured for, based on SBCLK and FSYNC.
      Regarding only the SAR ADC, without data transmission, let me gather some information to provide a thorough answer

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

  • 0 in reply to Ivan Salazar
    Genius 5350 points

    Hello Salazar-san,

    Thank you very much for your comment.

    I understood that as follows.
    Although VBAT is converted by the SAR ADC with a certain sampling frequency which is higher than data transfer rate, the apparent sampling frequency will be the data transfer rate since the data is output via DOUT etc.

    Is the acquired SAR data simply thinned out and output at the data transfer rate without averaging?

    For my reference, I would like to know the sampling frequency of only SAR ADC.

    Sincerely,
    M. Tachibana

  • 0 in reply to Masanori Tachibana
    TI__Guru** 109825 points

    Tachibana-san,

    I'll confirm on the provided information and also get details on the SAR ADC sampling rate.
    Can you provide an email address so that we can contact you directly if the information needs to be disclosed to you directly? Or you can also send me a message to: ivan.salazar@ti.com
    Thanks!

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

  • 0 in reply to Ivan Salazar
    TI__Guru** 109825 points

    Tachibana-san,

    I'll reach out to you through email with the detailed information.

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

  • 0 in reply to Ivan Salazar
    Genius 5350 points

    Hello Salazar-san,

    Thank you for your reply.
    Please discuss through email.

    Sincerely,
    M. Tachibana