AWR6843: 1.0V & 1.8V power ripple measurement

Michael Su

Part Number: AWR6843

Tool/software:

In the page 30 of the AWR6843 datasheet, it describes the requirement of the 1.0V & 1.8V ripple, they are very small (uV),

how should I measure them correcly?

Thanks

Michael Su

over 1 year ago

0 Voona Deexith over 1 year ago

TI__Expert 4190 points

Hi Michael,

Thanks for your question. Please allow us some time to respond to your question.

0 Kundan Somala over 1 year ago in reply to Voona Deexith

TI__Expert 3810 points

Hi Micheal,

Could you please share more details on what exactly you are looking for?
Usually these will be measured by using an oscilloscope. Also, Please share the power topology and PMIC details which you are using ?

Thanks,
Kundan

0 Michael Su over 1 year ago in reply to Kundan Somala

Intellectual 610 points

Hi,

The following figure is the power ripple requirement of AWR6843, they are uv grade,

can the oscilloscope measure uv grade signal ?

Our power topology is:

one discrete DC-DC converts the 12V to 5V, then use PMIC, LP87524, converts 5 V to all other voltage

levels that AWR6843 needs

Thanks

Michael Su

0 Kundan Somala over 1 year ago in reply to Michael Su

TI__Expert 3810 points

Hi Micheal,

Yes you should be able to measure with oscilloscope.

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AWR6843: 1.0V & 1.8V power ripple measurement