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TAS2505: About speaker output gain

user777540
Expert 1020 points
Part Number: TAS2505


hello,

From Figure 1-1, it was understood that the speaker output gain of P1 / R46 and P1 / R48 can be changed.

The difference is that P1 / R46 switches the PWM duty ratio, and P1 / R48 switches the voltage level output to the speaker?
Or is the voltage level output to the speaker constant, and is the PWM duty ratio switched for both P1 / R46 and P1 / R48?

best regards

  • 0
    TI__Guru* 84915 points

    Hi,

    Actually, the voltage level output is fixed to SPKVDD. Even if you modify the gain though registers configuration, the output will always oscillate between GND and SPKVDD.

    The gain, as you mentioned, will only mofify the duty cycle.  Even if it is adjusted with page 1 / register 46 or register 48.

    Best regards,

    Luis Fernando Rodríguez S.