• AD7864: FAQs

    What is the meaning of the absolute input voltage


    The AD7864 is a replacement for the TI part ADS8321 so the product line has put
    the “Absolute Input Voltage” spec in the general specifications section of the
    datasheet (as in the…

  • AD7864: Pin Connections

    Q1.: I will only be using two of the four analog inputs on the AD7864. Do I
    need to pull the two unused inputs low or is this done internally by the AD7864.

    Q.: 2 I will be connecting an external reference (AD780) to the AD7864. The
    external reference…

  • AD7864: CLKIN pin

    I will be running the AD7864 from its internal clock, i.e. #INT/EXT CLK pin
    pulled low. Is it OK to leave the unused CLKIN pin floating or do I need to
    pull it low also.


    Yes its OK to leave it floating.

  • AD7864: Chip Select Inputs

    Other inputs on the AD7864 (#STBY, #WR and Chip Select Inputs SL1 & SL2) are
    going to be pulled high via pull-up resistors. Do these lines need to be pulled
    high to the +3.3V supply or to the main +5V supply (DVDD)?


    These can be pulled…

  • AD7864-2: ESD

    Customer wanted to know the sensitivity level for  AD7864, ESD data for this pn
    is not available on the reliability report


    The ESD we have for the HBM of the AD7864-2 is 500V
  • RE: Question about AD7864


    Please see the table below.



  • What is the initial value of the AD7864 channel select register?

    What is the initial value of the AD7864 channel select register?



    The customer has not set the logical state of DB0 from DB3. (From the beginning, RD and CS are set low and WR is set high).


    Since the logic from DB3 to DB0 has not been set, I thought…

  • AD7864-1



    I have a question about AD7864BSZ-1REEL.

    ① In data sheet P1
    "Selection Input Range: ± 10 V, ± 5 V for AD7864 - 1"
    Although there is description, please tell me how to select the range
    * Currently it is used in the ± 5 V range, but when using…

  • RE: AD7864 external clock

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,