SN65LVDS105: Power consumption and phase noise

Hans

Genius 12865 points

Part Number: SN65LVDS105

Hello Team, can you provide phase noise for this part, please? Signalfrequency = 40MHz.

Are the typ. 23mA (RL=100Ohm) the current for the whole device?

Thanks and Best Regards, Hans

over 3 years ago

0 David (ASIC) Liu over 3 years ago

TI__Guru**** 157596 points

Hans

23mA is the typical current for the device.

For phase noise, please see Figure 9, 10, 11, and 12.

Thanks

David

0 Hans over 3 years ago in reply to David (ASIC) Liu

TI__Genius 12865 points

Hi David,

can you explain how to calculate phase noise from these jitter values in figure 9, 10,11,12, please?

Thanks and Best Regards,

Hans

0 David (ASIC) Liu over 3 years ago in reply to Hans

TI__Guru**** 157596 points

Hans

You can use this online tool to calculate phase noise from jitter.

https://www.silabs.com/jittercalculator/phase-noise-jitter-calculator.aspx

Thanks

David

0 Hans over 3 years ago in reply to David (ASIC) Liu

TI__Genius 12865 points

David, this tool calculates jitter from phase noise. I don't think it is possible to calculate phase noise from jitter. But if you tell me it is possible, please let me know how.

Thanks and Best Regards,

Hans

0 David (ASIC) Liu over 3 years ago in reply to Hans

TI__Guru**** 157596 points

Hans

Sorry I misunderstood your question, you are correct that it is not possible to calculate phase noise from jitter since phase noise is in the frequency domain, and you can’t get the frequency information from jitter.

Unfortunately, we do not have the phase noise data for SN65LVDS105.

Thanks

David

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SN65LVDS105: Power consumption and phase noise