TPA3118D2: TPA3118D2 What`s condition for THD+N 10% and THD+N 1% ?

Lawrence He

Genius 3280 points

Part Number: TPA3118D2
Other Parts Discussed in Thread: TPA3116D2

Dear,

We see the TPA3118D2 datasheet and

is the following chart proven that TPA3118 supports to 18W@12V with THD+N=10% and 15W@12V with 1%.

If TPA3116 &3118 curves are same as following, why the description stated differently?

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.

over 4 years ago

0 Yanming Gong over 4 years ago

TI__Mastermind 19030 points

Hi Lawrence,

Which description difference do you mean?

You are right, TPA3118 supports to 18W@12V with THD+N=10% and 15W@12V with 1%.

Regards,

Derek

0 Lawrence He over 4 years ago in reply to Yanming Gong

Genius 3280 points

Hi, Derek

i mean is THD+N=1% and THD+N=10% what`s different condition, like as below chart, i see supply voltage was the same 12V,

and the same RL=4ohm, so is mean blue curve is TPA3118D2? and red curve is TPA3116D2?

it`s right?

if any, Please advise me.

Thanks,

Best regards,

Lawrence.

0 Yanming Gong over 4 years ago in reply to Lawrence He

TI__Mastermind 19030 points

Hi Lawrence,

You made the mistake. The curve shows the difference between 1% and 10% THD at same power supply, not the comparison between TPA3116 and TPA3118.

At same PVCC power, 10% THD application can support more power output.

Regards,

Derek

0 Lawrence He over 4 years ago in reply to Yanming Gong

Genius 3280 points

Hi, Derek

how to implement 1% and 10% THD+N?

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.

0 Yanming Gong over 4 years ago in reply to Lawrence He

TI__Mastermind 19030 points

Hi Lawrence,

You can check the THD data using Audio Precision Instrument.

Regards,

Derek

Audio

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TPA3118D2: TPA3118D2 What`s condition for THD+N 10% and THD+N 1% ?