LMX2694-EP: Differential Mode Testing

Jonathan Wamala

Part Number: LMX2694-EP

Hi, am i want to verify LMX2694-EP differential mode output for OUTA_PD on the evaluation card but am having trouble setting it up in continous mode where i can see proper 180 deg phase offset. Can you offer some insight? am using TICS Pro GUI.

10 months ago

0 Noel Fung 10 months ago

TI__Guru** 121130 points

Hi Jonathan,

I am afraid I do not understand your question.

Were you not able to get signal from the output?

Do you have a TICS Pro configuration?

0 Jonathan Wamala 10 months ago

Prodigy 10 points

Hi Noel,

...

With the pull-ups as shown in pic, can LMX2694 provide accurate differential output.

And is this realizable on EVAL Board ?

0 Noel Fung 10 months ago in reply to Jonathan Wamala

TI__Guru** 121130 points

Hi Jonathan,

Could you attach the picture again?

+1 Jonathan Wamala 10 months ago in reply to Noel Fung

Prodigy 10 points

0 Noel Fung 10 months ago in reply to Jonathan Wamala

TI__Guru** 121130 points

Hi Jonathan,

As an example,

I measured:

Frequency	RFoutAP	RFoutAM
1GHz	7.3dBm	7.3dBm
7GHz	6.46dBm	5.5dBm
14GHz	0.83dBm	0.75dBm

0 Jonathan Wamala 10 months ago in reply to Noel Fung

Prodigy 10 points

Noel

Datasheet says characteristic output PWR is 2dBm @ 8GHz, how did you get ~6dBm ?

0 Noel Fung 10 months ago in reply to Jonathan Wamala

TI__Guru** 121130 points

Hi Jonathan,

Datasheet is not correct, we are in the progress of updating the datasheet. Typical output power at 8GHz should be around 5dBm.

Clock & timing

Clock & timing forum

LMX2694-EP: Differential Mode Testing