LAUNCHXL-CC1310: LAUNCHXL-CC13-90 components discrepancy

Michael Shklyarman

Part Number: LAUNCHXL-CC1310
Other Parts Discussed in Thread: CC1190

Hi,

The question is about component designators R154, C218, C218 in the US schematics for the reference design. They are spec’d as 0 ohm resistors in the BOM, however, the CC1190 datasheet specs 47pF caps.

Could you please clarify what needs to be populated here.

thanks

Michael

over 4 years ago

0 TER over 4 years ago

TI__Guru**** 317180 points

- See 5.7 in https://www.ti.com/lit/pdf/swra517 on the usage of the components between the SAW filter and CC1190. Do you need the attenuation?

- The cap in the datasheet is added to provide a DC block. In the ref design the input to CC1190 is guarantied to have no DC component, hence an extra cap is not needed.

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LAUNCHXL-CC1310: LAUNCHXL-CC13-90 components discrepancy