• AD7655: Stuck bits

    I have a problem witch the AD7655AST.
    I work in parallel Mode and have a 2,5V ref, all Voltages and Grounds are ok.
    The IC is full funtion to a Voltage of 0,5V on INA and INB. Over this Voltage
    the Databits D0 to D5 are allways low.
    When I change…

  • AD7655: REF pins questions

    There are three reference pins of this chip, which are REF(PIN 37), REFA(PIN
    43), REFB(PIN 42). From my view, REFA(PIN 43) and REFB(PIN 42) are used for
    channel A and channel B respectively and they can be offered with different
    levels, if so…

  • channel selection of AD7655

    the input channel select control A0 can not work properly, that is when A0=0,
    it will sample INA2 and INB2, not INA1 and INB1. Is it possible? Another
    problem is that using the A channel and B channel to sample the same voltage
    (2.5V reference…

  • AD7655: Driven significantly below ground

    I am using an AD7655 in a data aquusition sytem in which the input sriving
    (aquasition) voltage can go more than 0.3V negative on a regular basis. Page 18
    of the AD7655 states that the input clamp diodes can handle up to 120mA. Could
    you please…

  • I have a question to the timing of AD7655 in master-mode. Does the following operational sequence function?

    I have a question to the timing of AD7655 in master-mode.
    Does the following operational sequence function?

    MASTER MODE:
    In the first run an low-impulse on the CNVST line must take place to start the
    automatic conversions.
    'Start':

  • AD7655

           Hello,

    I'm looking for PCB/gerber  files for EVAL-AD7655. Could you please provide it ?

    Thank you in advance.

          Best regards

    Ruben

  • RE: AD7655

    This question has been closed by the EZ team and is assumed answered.
  • ad7655通道A、B采样值差异

    AD7655可以采集A1、B1、A2、B2的采样值,但是存在差异;
    四个通道同时采集0V电压时, A1和A2均值为 130 LSB , B1和B2均值为 0 LSB;
    四个通道同时采集3.3V电压时, A1和A2均值为 42200 LSB , B1和B2均值为 42350 LSB;
    则采样0V和3.3V差值,A1和A2为 42070LSB,B1和B2为 42350LSB

    不知道哪儿出的问题,咨询一下大家,谢谢!

  • AD7655通道A和通道B获取差异

    AD7655可以获取A1、B1、A2、B2的采样值,但是数值存在差异;

    四个通道同时采集0V时,   A1和A2均值为     130 LSB ,           B1和B2均值为         0 LSB

    四个通道同时采集3.3V时,A1和A2均值为42200 LSB,            B1和B2均值为42350 LSB

    A1和A2采集0V和3.3V差值是     42070 LSB

    B1和B2采集0V和3.3V差值是    42350 LSB

    不知道哪儿出了问题,咨询一下,谢谢!