PMP15036: discussion

Wiky Liao

Part Number: PMP15036
Other Parts Discussed in Thread: TPA3128D2

Hi team,

We are interested in PMP15036 reference design but confuse on some questions, could you help to answer it? Great thanks!

1. The PMP15036 solution include three major parts, right or not:

a. OPA4377AIPW;

b. IPS61178RNWR;

c. TPA3128D2;

2. What’s the limitation on the slew rate and stability?

3. Have distortion or not when rail changes (power supply voltage)?

thanks.

Wiky

over 6 years ago

0 Helen chen over 6 years ago

TI__Mastermind 40080 points

1. Yes, three parts.

2. The slew rate of what? could you explain it in detail?

3. when the battery voltage drops, there's no distortion.

0 Wiky Liao over 6 years ago in reply to Helen chen

TI__Intellectual 1550 points

Hi Helen,

thanks the reply.
for slew rate concern, when the input audio signal increase rapidly, we worry about if the system could follow the change in time or it will limited by the slew rate and goes high slowly. could you help to confirm? thanks!

Wiky

0 Helen chen over 6 years ago in reply to Wiky Liao

TI__Mastermind 40080 points

Please check the test result in the PMP15036 test report: it is less than 1ms with 200uF output cap and around 1.5ms with 440uF output cap. (ceramic cap not included). So if the audio signal rise rapidly, the response time is within 1-1.5ms depend on the output cap.

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PMP15036: discussion