DS90UB954-Q1: DS90UB954 REFCLK jitter spec

Kygo Cheng

Expert 6830 points

Part Number: DS90UB954-Q1

Hi Team

There is good news that we could DIN DS90UB954-Q1 in camera module!

We are concerning the jitter spec of TI DS90UB954 REFCLK.

The jitter spec to REFCLK is 200ps max.

which jitter is specified to REFCLK, I mean phase jitter, peak to peak jitter, RMS jitter or cycle to cycle jitter?

EPSON SG-8101CGA oscillator jitter spec.

over 2 years ago

0 Hamzeh Jaradat over 2 years ago

TI__Guru** 107610 points

Hello Kygo,

the 200ps is the max allowed p-p jitter.

0 Kygo Cheng over 2 years ago in reply to Hamzeh Jaradat

TI__Expert 6830 points

Hi Hamzeh Jaradat

Got it!

1.So can customer use 200ps for a design?

Because other as EPSON SG-8101CGA oscillator jitter spec is show Max.

0 Hamzeh Jaradat over 2 years ago in reply to Kygo Cheng

TI__Guru** 107610 points

As I said, 200ps is the max allowed. So I would not chose an Oscillator with 200ps jitter because it may have tolerances under different temp or voltage variations!.

0 Kygo Cheng over 2 years ago in reply to Hamzeh Jaradat

TI__Expert 6830 points

Got it!

And which jitter is specified to REFCLK, I mean phase jitter, peak to peak jitter, RMS jitter or cycle to cycle jitter??

+1 Hamzeh Jaradat over 2 years ago in reply to Kygo Cheng

TI__Guru** 107610 points

This is p-p jitter

Interface

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DS90UB954-Q1: DS90UB954 REFCLK jitter spec