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TPA6133A2: Measurement condition of 138-mW in the datasheet title

Akio Ito
Genius 3595 points
Part Number: TPA6133A2

Hi,

What is condition of 138-mW in TPA6133A2 datasheet title?
I guessed from Figure.3 that measurement condition is VDD=3.3V, 1kHz, THD+N=10%, RL=16-ohm. Is it right?

Best regards,

Akio Ito

  • 0
    TI__Guru** 109825 points
    Ito-san,

    This output power condition could be obtained different depending on the supply voltage.
    For 16-ohm load and VDD = 3.3V, output power is 138mW at THD+N ~= 11%
    For 16-ohm load and VDD = 5V, output power is 138mW at THD+N ~= 2.66%
    Your reading on Figure 3 is correct, although take into account that Figure 3 shows 3V and 3.6V data, not 3.3V

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Genius 3595 points

    Ivan-san,

    Thank you for your answer.
    Using Scatter and Trendline of MS-Excel, I estimated the output power from Figure 3 is 139-mW when VDD=3.3V, THD=10% and 16-ohm loaded. This is the reason why I posted this question.

    Best regards,

    Akio Ito