TAS5720A-Q1: Maximum Continuous Output Power @ PVDD=15V, 4 ohm speaker, THD+N=10%

DY Ko

Part Number: TAS5720A-Q1

Hello Audio Team,

My customer is considering using TAS5720A-Q1 for AVAS(Acoustic Vehicle Alert System) in automotive application.
This team asked some questions about the TAS5720A-Q1 as below. Would you please reply with relevant measurement data?

1. What's the maximum output power @ PVDD=15V, 4 ohm load, THD+N=10 %?
Because the TAS5720A-Q1 datasheet has THD+N=0.1 % condition only as below.

2. Do you have any electrical characteristic graph for THD+N vs Output Power @ PVDD=15V With 1 kHz Sine Input, 4 ohm load conditions?
Because the TAS5720A-Q1 datasheet has the graph, but the PVDD=12V as capture below. So my customer want to know how much differences @ PVDD=12V vs PVDD=15V.

Best regards,
DY

over 6 years ago

0 DY Ko over 6 years ago

TI__Expert 5130 points

Hello Audio Team,

Also please guide how to configure the external diagnostic circuitry for open load and shorted load respectively.

Best regards,
DY

0 Shawn Zheng over 6 years ago in reply to DY Ko

TI__Mastermind 24835 points

Hi DY,
We will collect data and get back to you soon later.
Best regards,
Shawn Zheng

0 Andy Liu (BMS) over 6 years ago in reply to DY Ko

TI__Guru 52115 points

Hi DY,

Regarding the load diagnostics, see the app note below.

www.ti.com/.../slva824.pdf

Andy

0 Andy Liu (BMS) over 6 years ago

TI__Guru 52115 points

Hi DY,

I will see whether we have any existing data to meet your needs.

Andy

0 DY Ko over 6 years ago in reply to Andy Liu (BMS)

TI__Expert 5130 points

Hi Andy,

Thank you for your quick response.
I had already provided this apps note(SLVA824.pdf) to my customers, but they preferred simple external circuitry for load diagnostics.

Best regards,
DY

0 Andy Liu (BMS) over 6 years ago

TI__Guru 52115 points

Hi DY,

See my comments on your questions below.

a) What's the maximum output power @ PVDD=15V, 4-ohm load, THD+N=10 %?

The output power is about 28.73W.

Here are test Conditions.

TAS5720A-Q1EVM

PVDD=15V

Load=4ohm

1kHz, sinewave

THD+N = 10%

LRCLK=48kHz

MCLK=6.144MHz

BCK=3.072MHz

b) Do you have any electrical characteristic graph for THD+N vs Output Power @ PVDD=15V With 1 kHz Sine Input, 4 ohm load conditions

See the sweep results below for PVDD = 12V and PVDD =15V.

Here are test Conditions.

TAS5720A-Q1EVM

Load=4ohm

1kHz, sinewave

LRCLK=48kHz

MCLK=6.144MHz

BCK=3.072MHz

0 DY Ko over 6 years ago in reply to Andy Liu (BMS)

TI__Expert 5130 points

Hi Andy,

Thank you so much for your efforts and great support for my customer's requests.
I'll try to do find more and win more audio products in automotive applications.

Best regards,
DY

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TAS5720A-Q1: Maximum Continuous Output Power @ PVDD=15V, 4 ohm speaker, THD+N=10%