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TPS7A47-Q1: Die form

Kiet Pham
Prodigy 60 points
Part Number: TPS7A47-Q1

Hi

We have the application with limited space on RF/Microwave hybrid frequency upconverter (hybrid means chip/die connecting by gold bond wire)

The maximum space allowed is 0.2 inch square while this QPN package dimension is 0.197" x 0.197". That is the reason we have to use die form to attach to our carrier.

We are also struggling in term of RF Extraneous PM Modulation (Phase noise) specification -154dBc/Hz Single Side Band

2 questions:

1. Does TI offer TPS7A47-Q1 in die form ? and if the answer is yes, who we need to contact ?

2. Is LDO regulator the most phase noise contributor for the entire upconverters including RF amps, switches, filters, etc...?

Kiet Pham

and

Alex Martinez (RF engineer)  at Teledyne Microwave Solutions

650-861-8736

  • 0
    TI__Mastermind 23361 points

    Hi Kiet,

    1. Does TI offer TPS7A47-Q1 in die form ? and if the answer is yes, who we need to contact ?

    Please allow some time for me to investigate this and I will back to you on this soon.

    2. Is LDO regulator the most phase noise contributor for the entire upconverters including RF amps, switches, filters, etc...?

    The datasheet has a noise plot that will give you an idea on the noise that comes from the LDO. 

    For the noise filtering, you may need to refer to the PSRR plot of the LDO. The datasheet also has PSRR plots at different conditions from Figure 11 - 18 on Page 8 and Page 9. 

    Is this what you are looking for? 

    Regards, 
    Jason Song

  • 0 in reply to Jason Song
    TI__Mastermind 23361 points
    Hi Kiet,

    I haven't heard back from you for a few days, I assume the concerns have been addressed. If not, please reply back on this post.

    Thanks,
    Jason Song
  • 0 in reply to Jason Song
    Prodigy 60 points
    Hi Jason
    Micross (die distributor) got back with the quote
    $55,000 US dollars and 18 weeks for entire wafer
    This is not an option for Teledyne. Do you have any other distributor ?

    Thank you
    Kiet Pham