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YKRIS's avatar
YKRIS
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6 years ago

VCCT_GXB & VCCR_GXB Ripple Measurements

Hi, I am using the Cyclone 10 GX in one of my designs I would like to measure the VCCT_GXB & VCCR_GXB voltage AC component (ripple, dynamic response, noise etc) and make sure is wihthin the requir...
CheepinC_altera's avatar
CheepinC_altera
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi,

As I understand it, you have some inquiries on the oscilloscope bandwidth to use for XCVR power supplies measurement. For your information, as I search into documentation, there seems to be no specific information on this. Sorry for the inconvenience.

Just to for sharing purpose only, based on my own experience, I have used scope with 500MHz bandwidth.

It is recommended for you to further consult your test or measurement equipment vendor on the right equipment to use for your measurement. I believe they should be the right person to advise you on this.

Please let me know if there is any concern. Thank you.

  • YKRIS's avatar
    YKRIS
    Icon for New Contributor rankNew Contributor
    6 years ago
    Hi, Thanks for the quick response. Allow me to clarify my question. I'm asking what is the maximum frequency of the voltage AC component (voltage regulator ripple, noise, dynamic response etc) that will reduce the FPGA performance? The noise tolerance limit in the PDN tool is very tight (2%) and high BW probe will pick up a lot of high frequency noise. Most of the complex ICs i use filter AC above 20MHz inside the IC package (in the die or substrate). Thanks!