CDCE913: CDCE913

Klaus k

Prodigy 160 points

Part Number: CDCE913
Other Parts Discussed in Thread: CLOCKPRO

Hello

I saw in one of the earler posts that you show VCXO pulling plots. where can i find that vcxo tool?

over 8 years ago

0 Puneet Sareen over 8 years ago

TI__Expert 8865 points

Hello Klaus

Xtal pulling in the VCXO mode is dependent on the motional capacitor of the Xtal and the load capacitance. We have a tool to eatimate the pullability of the xtal. You can download the Clockpro tool from the following link:

http://www.ti.com/tool/clockpro

after installing it, you can find the VCXO tool there:

Tools-> 'Pulling Range Plot'

In addition we gave a detailed application note on the VCXO:

http://www.ti.com/lit/pdf/scaa085

http://www.ti.com/lit/an/slea071/slea071.pdf

Don't hesitate to contact if you have any further questions.

Best regards

Puneet

0 Klaus k over 8 years ago in reply to Puneet Sareen

Prodigy 160 points

Hello
I did the vcxo pulling simulation with the tool and i still see larger tuning range but i measure almost half. Any idea?

0 Puneet Sareen over 8 years ago in reply to Klaus k

TI__Expert 8865 points

Hi Klaus

Pluuling range is also influenced by the board capacitance on the XIN/XOUT pins. Please check if this is the root cause.

Best regards

Puneet

Clock & timing

Clock & timing forum

CDCE913: CDCE913