• AD9125 generate sine wave problem

    Hello,

    I'm using the AD9125 DA to generate a sin waveform.Use a 4x Interpolation,DACCLKP 400MHZ 、REFCLKP 100MHZ the DCI CLOCK 100MHZ,

    The  AD9125 SPI configuration is as follows:

    16'h0020
    16'h0000
    16'h0300
    16'h0CD1
    16'h0DD9
    16'h0AC0…

  • AD9125输出频谱异常

    AD9125通过ARM配置,arm多次复位,输出频谱10%概率异常。

    第一、第二个为单频正常输出的频谱,

    第三、第四个输出不正常的频谱@

    70M的频谱输出多次出现异常的频谱如下:

  • AD9125 as high-speed DAC with interpolator

    Hi All

     

    One of my customers is investigating direct conversion circuit by using ADI TxDAC.

    His product is FM transmitter. His circuit architecture is two steps, digital frequency modulation by FPGA and direct conversion DAC. RF output frequency is…

  • AD9125 minimum DAC rate with internal PLL

    We're using an AD9125 DAC on one of our boards, with the DAC clock being sourced from the internal PLL, locked to an 80 MHz reference. We'd like to run the DAC in 2x interpolation mode at 160 MHz, but it looks like the internal dividers in the PLL can…

  • AD9125 DAC Wake-up time after power down

    Hi,


    In our application the power consumption has to be low, so I want to use the power down feature of this DAC, when our transmitter is OFF. But I couldn't find the recovery time in the datasheet (The time it takes to recover from the power down mode…

  • AD9125 alias rejection using half band filters

    Hi,

    I'm using a common DAC clock of 370MHz, for IF generation of 70MHz and 205MHz.

    While generating the 205MHz, alias components are appearing at the output, which cannot be removed by and external discrete filter.

    I've attached a document to explain…

  • Is AD9777 is better than AD9125 in ALL cases?

    I want correct reason which DAC is better Whether AD9777 or AD9125.

  • How to synchronize multiple AD9125 when using NCO modulation?

    Hi, I'm using multiple AD9125 to generate signals at 70MHz. I use 4× Interpolation 400MHz directly for fDAC and 100MHz for fdata. Digital datapath is PREMOD HB1 NCO , HB2 HB3 bypassed. I use FIFO Rate Synchronization,the DACs output skew to vary from…

  • AD9125 for generating Complex and Real IF with complex baseband inputs

    Hi,

    In our application the baseband processor feeds AD9125 with baseband digital I/Q using the "WORD" mode (I/Q interleaved). Is it possible to generate complex analog I/Q as well as real IF(IF frequency requires using the NCO) with the hardware configuration…

  • Query regarding Sample Error Detection(SED) built in test in DAC AD9125

    We are using the DAC AD9125 in our hardware. In its data sheet a built in test setup named SED is specified. We have tried to use this functionality by configuring the DAC as described in the datasheet. Test data was supplied to the DAC inputs but the…