[ LM48100-Q1 ] Power Supply Ripple and Input Parasitics

Kenichiro

[ LM48100-Q1 ] Power Supply Ripple and Input Parasitics

Hi,

Can you find out the following information from your design database?

* Maximum ripple voltage for power pins (VDD, PVDD and I2CVDD)
* Input parasitic capacitance

It seems that "Vripple=200mVpp" was applied as PSRR condition. But it's helpful, if you can check maximum value.

Thank you for your support in advance.
Regards,
Ken

over 9 years ago

0 José Luis over 9 years ago

TI__Mastermind 20085 points

Hi Ken

I'm going to search this data and I'll be responding soon with further information.

Best Regards
Jose Luis Figueroa
Audio Applications Engineer | LPAA

0 José Luis over 9 years ago

TI__Mastermind 20085 points

Hi Ken-san

You should take into account that the ripple voltage depends on trace impedance between the power supply and ground, I can't provide you a maximum ripple voltage for that reason.

Best Regards
Jose Luis Figueroa
Audio Applications Engineer | LPAA

0 Kenichiro over 9 years ago in reply to José Luis

Mastermind 9165 points

Hi Jose,

Thank you for checking!
Did you find any info of "Input parasitic capacitance"?
The value for each pin is perfect...

Thanks,
Ken

0 José Luis over 9 years ago in reply to Kenichiro

TI__Mastermind 20085 points

Ken-san

I have been searching and seem that input parasitic capacitance data isn't available in any file. It is quite difficult to find this kind of information due to this device is old.

Best Regards
Jose Luis Figueroa
Audio Applications Engineer

0 Kenichiro over 9 years ago in reply to José Luis

Mastermind 9165 points

Hi Jose,

Thank you for taking your time...I see.. ; (

Thanks,
Ken

Audio

Audio forum

[ LM48100-Q1 ] Power Supply Ripple and Input Parasitics

[ LM48100-Q1 ] Power Supply Ripple and Input Parasitics