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  • ADS54J42: "Fs/4 +/- Fin" Spurs and "Fs/2 - Fin" Spur

    Resolved
    Part Number: ADS54J42 Hello, My customer has a question. [Q] Is there a way to mitigate "Fs/4+/-Fin" spurs and "Fs/2-Fin" spur ? [My understanding] These are spurs caused by gain mismatch and phase mismatch, but I don't think there…
    • Resolved

  • ADS54J42: ADS54J42 JESD204B Set-up?

    TI Thinks Resolved
    Part Number: ADS54J42 Dears. Customer is considering developing the ADS54J42. The JESD204B of the ADS54J42 was calculated as follows. Please review our settings. ADS54J42 Real input Clock in : 460.8Mhz Band Width : 200Mhz K=32 LMFS = 4211 Line Rate : 4608Mb…
    • Answered

  • ADS54J42: How long does it take to become operational after setting NYQUIST_ZONE ?

    Resolved
    Part Number: ADS54J42 Hello, This post is related to : https://e2e.ti.com/support/data-converters/f/73/t/807324?tisearch=e2e-sitesearch&keymatch=ads54j42 [Q] My customer set the nyquist zone as follows. 0x680042 0x01 //2nd Nyquist zone select or…
    • Resolved
    • Answered

  • ADS54J42: takes long time for receiving "sync signal" from FPGA JESD204B PHY.

    Resolved
    Part Number: ADS54J42 Other Parts Discussed in Thread: LMK04828 , DAC37J84 , , ADS54J60 Hi, I made a board using ADS54J42(512M), DAC37J84(256M), LMK04828, Xilinx FPGA. Sync signal between ADS54J42 and FPGA becomes 1 after long warm up time. Then, It works…
    • Resolved

  • ADS54J42: ADS54J42 Schematic Review?

    Part Number: ADS54J42 Other Parts Discussed in Thread: ADC32J45 , DEARS. The customer designs the ADC32J45 and ADS54J42. The ADC32J45 has design experience. But the ADS54J42 is first designed. Please review the ADS54J42 related circuit. There was a SNR…
    • Answered

  • ADS54J42: NYQUIST ZONE & CTRL NYQUIST Register setting

    Resolved
    Part Number: ADS54J42 Hello, My customer has a question about ADS54J42. [Q1] Please tell me the proper setting for NYQUIST ZONE and CTRL NYQUIST. <Their configuration> * Input Frequency Range = 75MHz to 475MHz (this is narrow band signal) * Sampling…
    • Resolved

  • RE: ADS54J42: ADS54J42 SNR?

    Henry, Is this still an issue? If so and it is a custom board, can you send the schematic so we can take a look at it? Regards, Jim
    • Answered

  • ADS54J42: Balun Transformer for Input

    Resolved
    Part Number: ADS54J42 Hello, My customer has a question about ADS54J42. [Q] You are using ADT1-1WT for input as single-ended to differential in EVM. Also you describe ADT1-1WT as an example for input balun. The characteristic impedance of ADT1-1WT is 75ohm…
    • Resolved

  • ADS54J42: using Beagle bone black to SPI bus

    Part Number: ADS54J42 Hi, I'm working on ADS 54J42. I need to make single lane (A0 and B0) A to D convert. I'm going to keep the setting of ADS 54J42 by using Beagle Bone Black SPI bus. Can you please provide me registers address and bit configuration…

  • ADS54J42: ADS54J42 JESD204B Design?

    TI Thinks Resolved
    Part Number: ADS54J42 DEARS. We are considering developing the ADS54J42. We only use 2-Lines of 4-Lines of JESD204B. How do you design a line that is not used when designing JESD204B? Do you design open or GND? Thank you.

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