CC1120EM-420-470-RD: RX-SINGLE-ENDED-IMPEDANCE

ricard castella

Part Number: CC1120EM-420-470-RD

Hi community,

I'm designing a PCB with this fabulous transceiver and in his datasheet I've found a reference about the RX port can be used as single ended without balun, does is it possible ?

And if is it possible how can I use it by this way?

Thank you very much!

Ricard.

over 7 years ago

0 TER over 7 years ago

TI__Guru**** 317180 points

Yes, it's possible to use the LNA single ended. We don't have any reference design showing this.

Why do you want to do this?

0 ricard castella over 7 years ago in reply to TER

Prodigy 20 points

I want to use it by this way because I want to drive the signal directly from sma connector to RX pins. Then now you've confirmed that is possible, how could I do the connections?

Ricard.

0 TER over 7 years ago in reply to ricard castella

TI__Guru**** 317180 points

As the datasheet indicate, the LNA needs a given source impedance to get good performance. If you connect the SMA directly to RF_P you will get 50 ohm.

Why do you want to connect directly to the SMA, not sure if I understand your usecase?

Sub-1 GHz

Sub-1 GHz forum

CC1120EM-420-470-RD: RX-SINGLE-ENDED-IMPEDANCE