• AD9786: Reset timing

    For our application we are using the DAC AD9786 as a straight DAC, that is,
    with the default settings. We are not using the SPI interface either. We want,
    however, to Reset the DAC each time the system is reseted. For that we would
    like…
  • AD9786: Propagation delay

    What is the dependency of the propagation delay and settling time of the AD9786?

     

    Propogation delay is dependent on mostly digital filter configuration since
    each filter has its own group delay depending on #of taps (i.e. group delay=FIR…
  • AD9786: Thermal pad connection

    1.) Pg 9 - Pin 2 is DNC
    Pg 47 - Pin 2 is labeled as LPF in the application circuit.

    2.) Pg 55 - Must the thermal pad be connected to AGND or DGND?

     

    1) DNC = Do Not Connect

    My guess is that figure 88, page 47 is a throwback to the…
  • Basic configuration for DAC AD9786

    Could someone provide a basic configuration of register for DAC AD9786 to make it  work In such way that i give the data input and get the data in analog form?

  • AD9786 - three questions

    Dear Sirs,

    Please answer:

    1. On page 5. of the AD9786 datasheet it is written:

    Gain Drift (with Internal Reference)      ±4 ppm of FSR/°C

    Reference Voltage Drift     ±30 ppm/°C

    Is it correct?

    2. What is the gain drift with EXTERNAL reference?

    3. Is it possible…

  • AD9786: Current output voltage calculation

    I found a problem with one of my customers where AD9786 full scale output power
    under single tone test condition is only 3 dBm, much lower than the specified
    value 10dBm, so they would like to confirm if max. output power of AD9786 is
  • AD9786 maximum analog output frequency

    Hi,

    What is the maximum analog output frequency we can generate from AD9786 DAC in 1x,2x,3x and 4x interpolation modes?

    Max input data rate : 200Msps.

    Max output update rate : 500Msps.

    How to determine the max output frequency from above data?

    Regards…

  • Windows 7 64b support for AD9786 eval board

    Dear ADI,

    I am an ARROW Field Sales Rep supporting SAAB-Sensis in Syracuse, NY.   I delivered an AD9786 evaluation board to an engineer last week and this morning he wrote "The eval board you gave me (AD9786) is not compatible with Windows 7 (64-bit…

  • AD9786内部电压基准的问题

    AD9786使用的内部基准电压,输出电压会有MV级的跳动。请问是什么原因?

    是内部某些寄存器需要设置,还是要加外部基准电压?这种有内部基准的DAC应该怎么加外部基准?

    请推荐下合适的基准电压芯片?谢谢

  • 关于AD9786镜像抑制的问题

    各位专家好!

           我在使用AD9786的过程中遇到一个问题,麻烦专家帮我解答下,谢谢!

          现象描述:     

           我要生成的模拟信号频率在100MHz至200MHz之间,为正弦波形式,由FPGA来提供数字信号。FPGA内部产生数字信号用的NCO工作时钟是200MHz(AD9786支持的输入数字速率最高为200MSPS),由FPGA内部的PLL给AD9786提供差分时钟200MHz,DATACLK也为200MHz(差分时钟的P、DATACLK与NCO的工作时钟为同一个时钟源),将AD9786设置为2倍内插模式…