• RE: AD7658, queries for current consumption

    Hi Karen,

    Thank you very much for your answer.

    In regards to supply current, please let me ask you more.

    About the feature of the analog input, how does it different between AD7658 and AD7658-1 ?

    If it is clear what is different, we may assume why…

  • RE: AD7656 occasional bad data 2

    Hi Joan,

       You mentioned that the reference used was 5V but in the schematic it says internal with REFen/dis pin equal to Vdrive. Please take note that the AD7658 reference voltage range is 2.5V.

       Have you apply reset on the AD7658? After power up, it is…

  • RE: AD7658-1 tconv > 3.1us

    Hi AllisonM,

       The maximum conversion time of the AD7658-1 is 3.1us across the Tmin to Tmax temperature range. The AD7658-1 conversion time was gathered in specific condition mentioned on page 7 (upper portion of the page). I can see that the AD7658-1 is…

  • 急,AD7658已经烧损了十几片了,请帮忙解决



  • AD7658 output comnparison problem

    Hi all,

    I'm using ad7658 in parallel mode. I have written my own fpga code to read the analog inputs. In simulation it works regularly but i can't see the true results at the outputs when i change it input voltage value.

    In oscilloscope, the…

  • AD7658 -reading data


    I've got little problem with reading data from AD7658. I am using it in hardware and parallel mode. After power up, sending pulse signal to reset pin (with CONVST X high) and the high-to-low CONVST edge followed by a low-to-high CONVST edge, I…

  • AD7658的正负供电电源问题


  • Re: [Precision ADCs] - Re: AD7656 occasional bad data 2

    Dear Jonathan,

    Thank you for your response. I send you an e-mail instead of using the

    EngineerZone of the webpage because I have attached some documents.

    The response to your inquiries is described below.

    1) Description of the problem:

    As I commented…

  • 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…