• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 21 subscribers
  • Views 554 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Max Vdiff for LVPECL output & LVPECL Like to LVDS termination

Santhana Krishnan T L
Prodigy 40 points
Part Number: CDCM6208

Hi 

I am using CDCM6208 device for generating LVPECL output with 25MHz Crystal input & VDD is 3.3V

As per Datasheet, the LVPECL (High Swing CML) Differential output voltage

0.6V (min), 0.8V (Typ), 1.12V (Max)

Differential Peak to Peak voltage is only specified for Typical (2xVOD).

What is the max peak to peak voltage for LVPECL output?

On the receiver side, I have the Max allowed differential swing on 0.25V to 2V. If I consider, Max of CDCM6208 LVPECL Vdiff output as 2.24V (2x1.12V), which is not meeting the receiver specification.

Please share the max value of Peak to peak voltage on LVPECL output stage.

If it still exceeds the receiver specification, I need to convert HS-CML (LVPECL) to LVDS. Please suggest the recommended termination scheme for this conversion.