• RE: AD7657-1: How to improve noise of CH1?

    Hi Niall-san,

    Yes, I also think it is layput proble. But we confirmed it was different noise level between AD7657 and AD7657-1. Could you please look at the attached file?  They are output wave form of AD7657 and AD7657-1. We can see CH1 of AD7657-1 is…

  • AD7657-1 DCINA input set-up and hold times & t17 minimum and what is t20?

    I use the AD7657-1 in serial mode.

    (i) Could you  please supply information on the DCINA input set-up and hold
    times 

    (ii) and a minimum time for t17 (Dout from  SCLK rising edge)?"
    This information is available for the AD2S8…
  • RE: AD7656 and AD7657

    Alex,

    The AD7656 is a 16-bit version that is pin compatible with the AD7657.   Have you considered the AD7657-1?   I am actually looking into the demand side internally to understand the situation to see if we shouldn't be recommending a more modern part…

  • Conversion error for AD7657

    Dear Sir/Madam,

     

    As for your ADC AD7657, why the miss conversion is happen in sometimes(not every time)?

    Do you have the similar case for this miss conversion in the past?

     

    We are just proceeding to verify for convert error why it is sometimes happen…

  • The error of converting for AD7657

    Dear Sir/Madam,

    I am studying to design with your 12 AD7657s that have same lot number.

    So I met the error problem.

    Why is this trouble happen?

    Please give me your good advice reason why?

    Condition:

    When I input 10V dc here, your AD7657 converted…

  • [征文]+[转载]ADI-AD7657调试小结

      [征文]+[转载]ADI-AD7657调试小结

    ADI-AD7657调试小结
    tziang@hotmail.com
    最近调试一块AD7657并行连接到DSP的控制板,整理调试记录如下:
    ADC
    部分原理图如下:

      

    1. 1.测量ADC的各路供电,正常;

      2.
      使用官方的并行ADC控制代码,
      测量RD,BUSY,CS相关信号,对照AD7657规格书,时序是没有问题的,
      信号如下,软件设置为读两次

    图一)CH1RD信号,CH2BUSY信号

    图二)CH1CS信号,CH2RD信号,由…

  • AD7656/AD7657/AD7658: What order is channel data presented in serial mode, single DOUT line

    In the serial data mode for a single data line configuration can you tell me in
    which order channel data is presented on the DOUT line. This information is
    provided in the datasheet only for the parallel interface.

     

    In the case of using…
  • ADA4857-1 1 to 4 fanout

    Dear Sir/Madam,

    I am after some PCB routing advice on connecting one ADA4857-1(gain of 2) to four ADA4857-1 (gain of 1).
    The delay between the ADA4857-1 is not important just signal quality.

    Regards Joe

  • .file_attr 1="1";

    Building a project imported from CCES 1.1.0 to 2.3.0 I get this error:

    [Error ea5004] "C:\Users\G\AppData\Local\Temp\acc3554de5a000\acc3554de5a001.s":659 Syntax Error in :
    .file_attr 1="1";
    syntax error is at or near text '1'.…

  • AD9523-1  Can I precisely adjust output clock frequency with AD9523-1 (EVAL-AD9523-1)?

    Greetings!

    I would like to inquire if it is possible to achieve precise frequency control with EVALZ - AD9531-1? I'm interested in generating a clock signal that is a multiple of femtosecond laser output pulse rate, which can be something close to 80…