TAS5805MEVM: TAS5805M

Beatrice Tomasi

Part Number: TAS5805MEVM

Hi,

Do you know the frequency response of this evaluation board? For example I can manage to send a sine wave at 15 kHz but from 20, 22 and 25 kHz on the signal is heavily attenuated. Is there an additional output filter different from the LC filter that is on the documentation?

Kindest regards

8 months ago

0 Luis Fernandes de Pina 8 months ago

TI__Genius 14420 points

Hello Beatrice,

Have you tested both outputs, first channel is a ferrite bead filter and 2nd channel has a 4.7uH and 0.68uF L-C Filter. There's going to be rolloff once you hit the the edge of the audio band so this is expected to a certain extent.

https://www.ti.com/tool/LCFILTER-CALC-TOOL Refer to this for the L-C Filter calculation.

best regards,
Luis

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TAS5805MEVM: TAS5805M