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TAS5630B

trond inge wang
Intellectual 385 points
Other Parts Discussed in Thread: TAS5630B

Hi TI,

what is the risk when using TAS5630B at lower temperature than it is specified for? We will clock the chip from outside. Can the chip be damaged?  If it will cause a degradation of audio quality, we can accept that. We would like to use the chip at -20C and lower is possible. We plan to output only 2 x 60W

Thank you.

  • 0
    TI__Genius 9175 points
    Hello,

    Can you share any information about the application?

    Generally, operating the device below the rated temperature causes tolerance changes and potently worsened audio performance not necessarily immediate failure (although failure is still a possibility). For example, a shift in the over current threshold, change in power dissipation and output FET mismatch may be observable at low temperatures.

    Based on your desired performance and use case, it is recommended to test the device with your own setup to determine if it will work for your application. Keep in mind that that datasheet specifications only apply to the recommended operating temperature range.

    Best Regards,
    Matt
  • 0 in reply to Matthew Beardsworth
    Intellectual 385 points
    Hi Matt,
    the application is an audio amplifier for passenger information in trams and trolley cars.
    Do you think it is safer to use an external oscillator rated for low temperature rather than rely on the internal oscillator in the chip?
    My experience from oscillators in low temperature is that they can have start-up problems.

    best regards

    Trond Inge
  • 0 in reply to trond inge wang
    TI__Genius 9175 points

    Hi Trond,

    Thank you for sharing the application.

    I agree that an external low temperature rated oscillator makes sense. This would ensure better timing consistency and minimal clocking drift across temperature which may otherwise be significant.

    Best Regards,

    Matt