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ADC32RF72: How to choose ADCs for radio telescopes?

Zhongxu Chen
Prodigy 20 points

Part Number: ADC32RF72
Other Parts Discussed in Thread: ADC32RF55,

I'm a undergraduate learning astrophysics and interested in radio telescopes now. I have learned some courses about curcuits but still confused about how to choose an ADC for my antenna (1-1.5GHz). So what parameters should I focus on ? Should I buy other things like clock buffers ?(I'm sorry for my stupid questions) And I appreciate it if someone could give me more further advice about builing an antenna backend and learning about microwave curcuits ! Thank you very much !

  • 0
    TI__Mastermind 42790 points

    Hello,

    We have received your case and are currently investigating it.

    The review process may take some time, and we sincerely appreciate your patience in the meantime.

  • 0
    TI__Mastermind 42790 points

    Hi,

    ADC32RF72 is indeed a good choice, you can also take a look at ADC32RF55.


    https://www.ti.com/product/zh-cn/ADC32RF55

    For the 1–1.5 GHz frequency band, the following aspects are of particular concern:
    Sampling Rate: At least 3 GSPS (Nyquist requirement ≥ 2 × maximum signal frequency)
    Resolution: 12–14 bits to ensure the dynamic range of weak signals
    SNR/SFDR: The higher the better, directly determining the ability to capture weak signals and resist interference
    Architecture: Pipeline-type (Pipeline) ADC or RFSoC platform