• AD9235 BRUZ-20 communication protocol and clock source

    I wonder what communication method (i2c, UART, SPI) does AD9235 use and which pin is for communication. And if I want to achieve full 20MSPS, what is the minimum frequency of CLK source. Is Arduino Uno R3 powerful/fast enough to communicate with AD9235…

  • RE: AD9235不同输入时会有一个周期性的波动

    This question has been closed by the EZ team and is assumed answered.
  • AD9235 minimum input frequency

    Hello,

    Could you please advise me the minimum input frequency of AD9235 without an influence of external capacitor? I would like to use AD9235 by wide frequency range.

    And how about the AD9649 and AD9266? Is it same as AD9235?

    Best regards,

    Akira

  • AD9235的单端输入中的0.33uF电容可否改为电阻

    AD9235的单端输入中的0.33uF电容可否改为电阻,

  • AD9235单端差分输入问题

    请教ADI工程师,我想用AD9235-65芯片,我的输入信号频率50K左右,输入信号经过滤波后,离AD9235的距离很近,是不是就不需要单端转差分输入了?我的信号本来是单端的。或者更进一步,在什么情况下才需要单端转差分信号?谢谢!

  • AD9235的单端输入电路的疑问


    在AD9235的数据手册中,对单端输入有这样一个图:

    这个图的2Vp-p是指的0~2V的信号吗?在数据手册第17页左侧中部,对于0~2V单端输入电路,又有这样的说明:

    这句话的意思不是说当单端输入0~2V时,VIN-接1V,VIN+接信号输入就行吗?为什么还要像上图一样那么接呢?

    还有。当VIN-接1V,VIN+接0~2V时,输出的数字信号是怎么样的呢?在数据手册中并没有找到明确的关于数字输出的说明

  • AD9235 Sample Hold Time

    Hi,

    I have a question inner circuit for AD9235 .

    I woukld like to know inner sample hold time for AD9235-20,-40,-65.

    My customer wants to know it,

    So if you like , Please tell me sample hold time..

    Best regards

    honkawad

  • 关于AD9235的使用稳定性问题

    向各位大师请教几个问题,我使用ad9235与fpga电路进行一个简单的最大值判断电路。一个类似正玄信号(周期性的)模拟输入,通过ad9235之后利用fpga在其最大值处进行一些操作。同时我通过在fpga中编程设一个阈值,滤除低于阈值的信号,程序不对这些值进行操作。

    1)发现刚上电时,信号一直有,但是电路并未作出找到最大值得操作,而是工作大概10S后才能找到最大值稳定的工作。不知这是由于什么问题引起的?

    2)我发现把阈值放低了的话,fpga会找不到最大值,而把阈值提高,最后又能找到阈值了,这是的确不合逻辑…

  • [AD9235]best input method and best driver amp

    Hello,

    According to AD9235 datasheet. There are 2 type of input circuit.

    On page 16, Figure 35, AD8138 Positive output go to AD9235 VIN+, negative one go to VIN-.

    On the other hand, page 23, Figure 46 shows analog input circuit on AD9235 EVM that…

  • internal reference of AD9235

    Hello,

    In the datasheet of the AD9235 there is a specification for gain drift when using an external reference. 

    is there any data available regarding typical gain drift when using the internal reference?

    Best Regards

    Norman Werner