TPA3251: TPA3251

Andreas Hanke Stern

Part Number: TPA3251

Dears,

About the proposed Frequency Response Graph of this TPA3251, it is measured/published at pure 08, 04 ohms resistive loads ?

Because the loss of high frequency , around 20 KHz is strong with real loudspeakers/tweeters/ crossovers involved ?

Andreas

over 5 years ago

+1 Robert Clifton56 over 5 years ago

TI__Mastermind 30940 points

Hi Andreas,

Where are you seeing this frequency response?

We use pure resistive loads when measuring the frequency response. Unless the AP filter was used, the TPA3251 shouldn't see a decrease in the high frequencies until much higher than 20kHz as the bandwidth is 100kHz.

Best Regards,

Robert Clifton

0 Gregg Scott over 5 years ago in reply to Robert Clifton56

TI__Mastermind 45035 points

With no response from the OP, it is assumed that the last reply solved the customer problem.

0 Andreas Hanke Stern over 5 years ago in reply to Robert Clifton56

Prodigy 30 points

"Where are you seeing this frequency response? " I am listening to my monitors Loudspeakers... I hear the big difference(in tweeters) when connected to a AB Class audio amplifier ( like TDA7294) and with TPA3251 (Class D) ... But i understand that was not only my impressions, a lot of Audio foruns related same lack of "airy" response an this depends of tipe of loudspeakers that you connect a TPA3251. It is the interaction of the L/C output filter and the crossover of the loudspeakers... But what is interesting is that the class AB (TDA7294) seems ok with that, same monitor loudspeaker... Thanks !

0 Robert Clifton56 over 5 years ago in reply to Andreas Hanke Stern

TI__Mastermind 30940 points

Hi Andreas,

Do you need further assistance?

Best Regards,

Robert Clifton

+1 Andreas Hanke Stern over 5 years ago

Prodigy 30 points

Ok, i don´t need further assistance !

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TPA3251: TPA3251