LMX2582 / about VCCxx pins

Toshiyuki

Other Parts Discussed in Thread: LMX2582

Hi,

Our Customer is considering the schematic of LMX2582.In terms of VCCBUF, VCCCP, VCCMASH, VCCDIG, VCCVCO2 and VCCVCO, if the each VCCxx is supplied with different power source, is the phase noise performance much better ? In addition, please let me know the power consumption(typ,max) for VCCBUF, VCCCP, VCCMASH, VCCDIG, VCCVCO2 and VCCVCO.

Best Regards,

Kato

over 9 years ago

0 Julian Di Matteo over 9 years ago

TI__Expert 4085 points

Hi Toshiyuki,

We received your question. I forwarded your post to the applications engineer most familiar with this device.

Thanks,
Julian

0 Toshiyuki over 9 years ago in reply to Julian Di Matteo

Mastermind 7075 points

Hi,

Your immediate response is highly appreciated.

Best Regards,

Kato

0 Dean Banerjee over 9 years ago

TI__Mastermind 28011 points

Kato,

We have done some experiments with bypassing and the EVM instructions shows what we think were the best results. The bypassing really does not have a large impact on the phase noise, but can have some impact on spurs.

Regards,
Dean

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LMX2582 / about VCCxx pins