• AD9745 dac output

    Hi,

    We are using AD9745 for our application. I am giving an input clock to DAC as 80MHz and DCO is 80MHz, The data input is 64 samples 2'scomplement data. I see the output of DAC in scope at I and I~ as 617KHz sine wave instead of 1.25MHz(80MHz/64).…

  • AD9745 能否用2.5VFPGA输出 驱动3.3V DAC芯片数字IO

    问题如标题,使用Xilinx 6系列FPGA控制DAC芯片AD9745,FPGA引脚电平为2.5V,但是DAC芯片的数字IO供电电压为3.3V,两者直连会不会有问题,FPGA内的数据能否正确的被DAC接收到?数据手册上指明DAC数字输入高电平的最小值为2V,2.5V在允许范围内,但是在高速数据速率的情况下(240M bps)会不会有什么隐患?

  • 关于AD8130的单电源使用

            在将数模转换器AD9745互补输出转换为单端的电路中,使用了AD8130芯片。

            AD8130为单位增益使用,连接如下:+Vs +5V,-Vs  0V,REF  2.5V,PD  +5V,FB和VOUT短接,IN+/-分别接0.45±0.45sinwt,FB通过50欧电阻接到REF,输出为2.5V的直流偏置和削顶失真的正弦波,电路图如附件所示,请问这个电路是否存在问题?如果有问题,AD8130在单电源供电下如何使用?电路设计预期想输出最小值0V,最大值500mV的方波,请问电路该如何设计?


  • Single-port mode of dual DAC

    I have a question about single-port mode of dual DAC.
    Could you  show me the answer of following problem.

     

    For example AD9741,AD9743,AD9745,AD9746,AD9747,
    In the case of using these dual DACs with single-port mode and only DAC1,
    how should I do IQSEL pin…

  • RE: AD9746/9783: DAC analog signal peak power attenuation issues on AD9746/9783 Evaluation boards.

    Dear larrywelchusa-san,

    Thank you so much for your kind suggestion.

    I am so sorry for my much late response due to my customer's late feedback.

    When my customer did set the bit resolution for AD9746 to 16 bits in DPGDownloader PC software tool…

  • TAGS LIST: Data Converters

    AD693
    AD5410
    AD5412
    AD5420
    AD5422
    AD5735
    AD5755
    AD5755-1
    AD5737
    AD5757
    AD5421
    AD421
    AD5758
    AD7569
    AD7669
    AD7868
    AD7869
    AD5593R
    AD5592R
    AD5940
    AD5941
    AD7293
    AD7294-2
    AD7292
    AD5590
    AD7294
    L…
  • What is mix-mode?

    Mix-mode is referred in some ADI presentation. What does it mean?