AWR1843BOOST: RF LDO and PA LDO I/P

Hitoshi Sugawara

Mastermind 19660 points

Part Number: AWR1843BOOST

Hi Experts,

There are two words RF LDO and PA LDO I/P in the User's Guide.

Please refer to 3.2.1 LDO Bypass Requirement.

Could you please let me know the differences between them?
Thank you for your check.
Best regards,
Hitoshi Sugawara

over 6 years ago

0 Vivek Dham over 6 years ago

TI__Guru 58035 points

Hello Sugawara San,
If the 1 V supply is fed to the RF1/RF2 supply pins the RF LDO bypass bit should be selected so that the internal LDOs get bypassed. Additionally if the 1V supply is also fed on the VOUT_PA pin on the device then the PA LDO Disable bit should also be set.

Regards,
Vivek

0 Hitoshi Sugawara over 6 years ago in reply to Vivek Dham

TI__Mastermind 19660 points

Hi Vivek,
Thank you very much for the correct setting.
We will follow it.

Let me clarify one point?
Is PA LDO equal to RF LDO?

Best regards,
Hitoshi

0 Vivek Dham over 6 years ago in reply to Hitoshi Sugawara

TI__Guru 58035 points

Hello Hitoshi San,
We have multiple RF LDOs internally. PA LDO is one of the RF LDO.

Regards,
Vivek

0 Hitoshi Sugawara over 6 years ago in reply to Vivek Dham

TI__Mastermind 19660 points

Hi Vivek,
Thank you very much for sharing info.
It makes sense.
Thank you again.
Best regards,
Hitoshi

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AWR1843BOOST: RF LDO and PA LDO I/P