TLV320DAC3101 Linearity of Analog Volume Control

Hi, Kato-san,

Sorry for the delay; we've been very busy lately.

I'm not sure I understand your question. Are you asking why is there a change in slope at -50 dB? We usually do something like that as the change in output is so small at that point, that using a bunch of bits there is not useful. You want to have better granularity at the higher gains where each change is more apparent to the end user.

-d2

Hi Don-san,

Thank you for your response.
The graph of "gain vs volume control" which I modified as an example is shown as below.
I believe that it is useful to utilize gain properties of a red line for the end users, if they do not need the variable gain range from -78.3 dB to 0 dB as the analog gain control, the variable gain range from -60 dB to 0 dB with the linearity is enough.
Could you please tell me the reason that you decided the variable gain range for the analog volume control?

Best Regards,
Kato

Hi Don-san,

Thank you for your reply.
I understood it.

Best Regards,
Kato