• 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

    故障现象就是所有数据为0,看芯片,上方是透个小眼,冒个小泡,还有一次全部烧损。

    还请大家帮忙分析,如果有ADI公司的,最好可以电话联系,或者来我们单位一趟,非常着急,谢谢

  • 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

    Hello.

    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

        最近正想用AD7658采集双极性信号,AD7658要求要用双极性的供电电源,有没有一款电源芯片能够将单极性的正电源输入转换为对称的双极性的电源输出,这样使用双极性的AD芯片就方便多了。以前用7812跟7912搭建的正负12V的电源太笨拙了…………

  • 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…