• AD9787管脚电压问题

    在AD9787里面,数字电压有两个一个是DVDD33,一个是DVDD18,想问的是,哪些管脚是属于DVDD33的电源域,哪些是属于DVDD18的电源域?

  • RE: 关于数模转换芯片AD9787里面的正交调制器中的NCO

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • RE: Power control of DAC(AD9787)

    Hi -

    The AD9787 can be powered up using this sequence with no problems.

    Thanks

  • RE: DAC AD9744 maximum output frequency

    Hello  ,

    Thank you for your interest in AD9744.

    Yes, you are correct. The DAC clk is Fclk and Fout is the output frequency. We usually recommend getting a DAC with a sampling rate  (Fclk) at least 4x the desired Fout. In your case, a minimum sampling…

  • IF Frequency Of QPSK Modulator

    We are implementing direct qpsk modulator in fpga. Our data rate is 60 Mbit per sec . In digital , we must make I=I(0)*Sin(2*pi*f*t) and Q=Q(0)*Cos(2*pi*f*t). (f is frequency)

    Our question is that what is the value of f ? 

    2. If we want to inteface fpga…

  • HMC1056 IQ Modulator

    We are planning to use ADI TxDAC part: AD9787 (14-Bit DAC) for our data-rate requirement with your I/Q mixer: HMC1056LP4BE as I/Q modulator. The DAC can support the load resistance from 25 to 50Ohms whereas I/Q mixer: HMC1056LP4BE I/Q ports (IF1 & IF2…

  • RE: AD9788-DPG2-EBZ板卡的PC驱动问题

    相关的评估板资料,参考如下链接

    https://wiki.analog.com/resources/fpga/xilinx/interposer/ad9787?s[]=ad9788

    https://wiki.analog.com/resources/eval/dpg/eval-ad978x?s[]=ad9788

  • RE: AD9788SPI通讯无应答

    IO电压满足CMOS要求

    芯片手册:

    All data input is registered on the rising edge of SCLK. All data

    is driven out of the AD9785/AD9787/AD9788 on the falling

    edge of SCLK.

    数据在SCLK上升沿寄存,在下降沿改变,应该也没问题