• 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…

  • RE: AD9747 + interposer trouble

    Hi -

    It sounds like JP4, JP5, JP6 and JP7 are configured to route the signals to the ADL5375 QMOD rather than J5 and J6.

    The attached qucik start guide should help with AD9516 settings.

    Thanks,

    Larry

  • TAGS LIST: Data Converters

    AD693
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    AD5735
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    AD5755-1
    AD5737
    AD5757
    AD5421
    AD421
    AD5758
    AD7569
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    AD7868
    AD7869
    AD5593R
    AD5592R
    AD5940
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    AD7293
    AD7294-2
    AD7292
    AD5590
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  • What is mix-mode?

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