• problem with AD7683


    I have some problem with AD7683: my STM receive from ADC all zeroes ("0").

    Using AD7683 with STM32F429.

    Power : 3,3V.

    REF : 3V.

    +IN : 0..3V.

    -IN : GND.

    DATACLOCK trying from 2,9MHz to 10KHz.

    Using 24 bit hardware SPI and 22 bit software…

  • AD7683: Stuck bits

    I want to use the AD7683 instead of the 8320 of Burr Brown. The Device dont
    work correctly. The Data output is for some input voltages always the same. No
    bit toggled. The Timing will the same as in the Data sheet.


    AD7683 is a Successive…
  • AD7683 Maximum DCLOCK frequency

    Our product use the AD7683 and we have a question.

    We don't fine the maximum DCLOCK frequency in the datasheet.

    We want to increase the DCLOCK frequency for the access speed.

    Would you please send us the maximum DCLOCK frequency information.


  • CMRR of AD7683 and AD7684

    The AD7683 is pseudo differential input and AD7864 is true differential input.
    It is known that the pseudo differential input structure features less CMRR
    than true differential input structure. However, in the datasheet, the CMRR
  • AD7683 and Sampling clock


    I need to know how to vary the sampling frequency of AD7683?

    It is written that the sampling clock is internal.

    I need to use this for 1KHz and 256Hz sampling,is this possible?

  • AD7683 verilog parameter question

    Got on e-mail:

    parameter real FPGA_CLOCK_FREQ  = 100;  // FPGA clock frequency [MHz]

    parameter real ADC_CLOCK_FREQ   = 2.3;  // ADC clock frequency [MHz]

    parameter real ADC_CYCLE_TIME   = 10;   // minimum time between two ADC conversions (Tcyc) [us]


  • The accuracy difference of AD7683

    When measuring voltage signal with AD7683, the same board, different AD7683 chip, why some AD chip measurement accuracy is high, some AD chip measurement accuracy is low.Is there a quality problem with the chip?

  • AD7683的DOUT驱动能力


  • AD7683数据位数的大小






    用电阻0ADC芯片0,电阻1ADC芯片1。   0通道…

  • AD7683测量精度差异性