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TAS5806MD: [ESTEC] TAS5806MD Specification Inquiry

MJ Jeon
Genius 5240 points
Part Number: TAS5806MD
Other Parts Discussed in Thread: PCM9211

Dear, TI Support Team

Inquiries have been received from customers regarding the specifications of TAS5806MD.

[Inquiry 1]

If you look at the TAS5806MD specification sheet, there is a DC OFFSET DETECT function as shown below, but the exact SPEC is not shown.

Please check what happens to Normal, Max DC voltage during normal operation and DC Detect voltage for protection operation.

It is a necessary part to set the standard when measuring SPEC, so please check it.

[Inquiry 2]

The product under development is 25W+25W (8ohm 1KHz THD 1%) basic specification, and PVDD 24V / 4~16ohm impedance is used.

If you look at the specifications below, it is MIN 4.8ohm when PVDD 24V / BLT method is used.

Please check if there are any problems or absolute conditions when using under 4ohm conditions.

[Inquiry 3]

As shown in the block diagram below, if the OPTICAL (SPDIF) sampling frequency is 192KHz, it is not supported by the TAS5806MD, so another alternative AMP IC is required.

Please check if there is an alternative with the same performance as the TAS5806MD.

And please check whether sampling frequency conversion is possible in PCM9211. (Is down sampling possible?)

Thanks.

Regards,

MJ

  • 0
    TI__Genius 14920 points

    Hi MJ

    thank you for your question.

    [Inquiry 1]

    our device output DC offset will be trimmed to very small range at a certain PVDD voltage.

    so if device work normally, the DC offset at output should be less than 12mV at 18v PVDD.

    But about the DC detect threshold, it is not just related to voltage, it is also related to how long the DC sustained.

    offset voltage = 2v and sustain 650ms it will trigger the DC detect, and the device will report fault.

    [Inquiry 2]

    when using 24v, the minimum load resistance is 4.8Ohm. if the resistance is less than 4ohm, it will be very easy to trigger OCE.

    [Inquiry 3]

    considering 192kHz, tas5825 can support the 192kHz.

    about down sampling with PCM9211, i am not familiar with this device for it belong to other team.

    you can submit another e2e to confirm the detail of PCM9211.

    thanks

    Jess