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  • LMX2820: The external pfdin mode of lmx2820 cannot be switched successfully. Please check if any special settings or external conditions are required.

    Part Number: LMX2820 Tool/software: The peripheral strictly follows the circuit and parameters of the lmx2820 demo board. The FPGA used for control has successfully sent and read back register data, proving that the data has been successfully configured…
    • Answered

  • LMX2820: LMX2820 - OSCin Differential Input Voltage Range

    Resolved
    Part Number: LMX2820 Tool/software: Hi all, The datasheet for the LMX2820 lists the max VOSCin differential input voltage as 1Vpp. Is this the total differential swing allowed between pins? There's a note "(6) See applications section for definition…
    • Resolved

  • LMX2820: Alternative Capacitors for LMX2820

    TI Thinks Resolved
    Part Number: LMX2820 Tool/software: Hi, According to the schematic of LMX2820, CPOUT and VTUNE require three capacitors: 68nF, 2.2nF, and 480pF. However, we currently lack the 68nF and 2.2nF capacitors. Can we use capacitors with other values as substitutes…
    • Answered

  • LMX2820: LMX2820 instant calibration

    Resolved
    Part Number: LMX2820 Tool/software: HI! After the LMX2820 instant calibration initialization, the frequency was changed from 5.65GHz to 10GHz. The LD lock time is 6 seconds. Procedure Without power off, 10GHz lock off after even calibration: R1:0X57A0…
    • Resolved
    • Answered

  • LMX2820: How to output SYSREF from the LMX2820 (SROUT output)

    Resolved
    Part Number: LMX2820 Other Parts Discussed in Thread: LMX1204 , Tool/software: Dear Specialists, My customer is evaluating LMX2820 and LMX1204. They have a question about SYSREF of LMX2820. I would be grateful if you could advise. --- We have…
    • Resolved

  • LMX2820: Support Required for In-Band Spur Issue with LMX2820 in Ku-Band Application

    TI Thinks Resolved
    Part Number: LMX2820 Tool/software: Dear Team, I am using the LMX2820 PLL in my application to generate Ku-band single-tone signal. A clean and stable 100 MHz reference from TCXO is provided to the device. However, I am observing in-band spurious signals…

  • LMX2820: LMX2820 programming issue

    Part Number: LMX2820 Tool/software: Hi Team, I'm using the LMX2820 PLL IC on my board and interfacing it with USB to Any. I’ve connected a 10-pin ribbon cable on one side (to USB to Any) and a micro-D connector on the other. While the device is detected…
    • Answered

  • LMX2820: LMX2820 phase synchronization for two device after changing frequency

    Resolved
    Part Number: LMX2820 Tool/software: Hi, I have some problems in phase synchronize multiple LMX2820 devices.I use an external sync signal to synchronize two LMX2820 chips after setting a frequency for each chip. But it seems that synchronization fails…
    • Resolved

  • LMX2820: LMX2820: about phase synchronization between two PLL

    TI Thinks Resolved
    Part Number: LMX2820 Tool/software: Hi, As shown in the topology below, the LMX2820 works in Cat.3 synchronization mode. Whether to support the phase alignment of the output clocks of two chips, the error phase between the two outputs is fixed. There…

  • LMX2820: SPI Issue

    Part Number: LMX2820 Tool/software: Hi team, My customer use the LMX2820 and find the MUXOUT pin don't have output. If you have any suggestions of the software configuration to solve the SPI communication? Thanks.

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