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TL972-Q1: RF Noise Immunity

hideyuki sakai
Mastermind 6250 points
Part Number: TL972-Q1

Dear, Sir.

I am introducing TL972-Q1 as the replacement from JRC/NJM8202Z.

The one of advantage of NJM8202Z is the exsisting of Moble products RF Noise

Immunity testing result.

Do you have the similar testing data?

Best Regards,

H. Sakai

  • 0
    TI__Genius 13445 points
    Hi Hideyuki,

    Thanks for reaching out us, to my knowledge we do not have testing data for RF Noise immunity. I will double check with the rest of my team and get back to you.

    -Mamadou
  • 0 in reply to Mamadou Diallo
    TI__Genius 13445 points
    Hideyuki,

    We currently do not have a test setup for RF noise Immunity. I am however working on collecting the data, I will update you by EOB Tuesday.

    Thanks for your patience.

    Regards,

    -Mamadou
  • 0 in reply to Mamadou Diallo
    Mastermind 6250 points

    Dear, Mamadou-san. 

    Sorry to disturb your job. 

    I am feeling a mount of gratitude for all of your strong support. 

    Also, expecting your feedback next week. 

    Best Regards, 

    H. Sakai

  • 0 in reply to hideyuki sakai
    TI__Genius 13445 points

    Hi Hideyuki-san,

    My pleasure! Thanks for your patience.

    Please find attached the EMIRR characterization of a sample under T=25C that I was able to collect: Vcc/Vee = +/-3.0V

    Test Conditions:  Results:

    Please let us know if you have further questions or click the green button if this addressed your question.

    Thank you

    Regards, 

    -Mamadou

  • 0 in reply to Mamadou Diallo
    Mastermind 6250 points

    Dear, Mamadou-san. 

    I am feeling a mount of gratitude for your valuable information. 

    I would like to double-confirm several, Please give your advice. 

    1. Is it a testing results used samples? 

    2. I wonder the calculation of EMIRR is ; 

       EMIRR = 20log (VRF_PEAR / delta VOS) ? 

    3. EMIRR @ 1000MHz is indicated under 80dB. 

       Does it mean delta VOS getting larger at 1000MHz RF input? 

    Best Regards, 

    H. Sakai

  • 0 in reply to hideyuki sakai
    TI__Genius 13445 points
    Hi Hideyuki-san,

    1. This was a bench characterization based on a single control sample at ambient temperature, it doesn't necessarily represent all parts at all temperatures, corner cases could be slightly different.

    2. Your formula is missing a second term, please refer to the attached link, this app note does a great job explaining it in section 2.1 Calculating EMIRR IN+. My bench characterization was based on a 100mVpk RF signal
    www.ti.com/.../sboa128a.pdf

    3. And Yes at 1000MHz, delta Vos does get larger.

    Thank you for your support with this device.

    Please let us know if you have further questions.

    Regards,

    -Mamadou