• AD9754 Amplitude Control Topology

    Hello,

    I am going to use AD9754 as a DDS for generating a 32KHz sine (worst case scenario 100KHz) and I need to be able to fine tune its output amplitude, so I thought about using LTC2758. The topology which was suggested to me is to use LTC2758 output…

  • AD9754 replacement part

    Hi,

    Since the AD9754 is now NRND, which part is recommended as a replacement part?

    http://www.analog.com/en/products/digital-to-analog-converters/da-converters/ad9754.html

    Are there any notable differences to be aware of with the replacement part…

  • ad9754 输入正常,无输出

    故障描述:

    AD9754与FPGA相连,通过FPGA 输出时钟和数据,AD9754输出差分线对地阶25欧姆电阻,后面接运放放大(也可以通过去掉串阻,断开运放负载), 时钟速率大约是30MHZ,

    按照手册要求在时钟上升沿打入数据, 分别用全1,全0,中间多个值进行测试,输出时钟是200mV.

    对DAC输出方波数据, 输出共模电压依然是200mV 。 SLEEP管脚正常拉低,有共模电压输出;拉高后进入休眠模式,电压输出为0V


    电路连接严格参考手册要求,测试1.2V参考电压正常


    更换了多个单板…

  • Which should I connect REFLO of AD9744 to ? ACOM or AVDD ?

    Hi, in the datasheet of AD9744, it states that REFLO should be connected to ACOM for both internal and external reference operation modes. However in the reference designs (SOIC), it says that if you want to use external REFIO, you should tie REFLO to AVDD…

  • 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…