• AD7993 keeps reading same channel

    I am having difficulty reading from different channels. I read the same channel
    8 times. Can you give a general sequence I should follow?

     

    START
    Write Address
    ACK by AD7993
    Command mode byte 0x30 (set command bits to 0011 and address pointer…

  • RE: AD7993

    1.CS管脚和IOUT1管教有10几欧姆电阻

    2.有我用stm32输出推挽高电平,没焊AD7993芯片时,CS,DIN,SCLK都是3.3v左右,焊上AD7993芯片后,CS电平为1.13V,SCLK为3.2V,DIN为2.75V,这是怎么回事呢?线路连接应该是正常的

  • AD7993 I2C ACK problem

    Hi

    I am using a MCU (PIC32MX795F512L) to interface with the AD7993-0 ADC over I2C.

    I have connected the device in the test setup shown in the following schematic.

    1. VDD is stable at 3.28V.
    2. I2C pullups : 1K (A bit aggressive)
    3. I2C clock freq :…
  • Recommended Sequency to change channels over I2C

    I can't change channels on the AD7998, I get the same value 8 times. Can you
    give a recommended sequence to change channels over I2C?

     

    START
    Write Address
    ACK by AD7993
    Command mode byte 0x30 (set command bits to 0011 and address pointer…

  • AD7994 filter

    The AD7992 AD7993 AD7994 AD7997 AD7998 have a bit D3 in the Configuration Register defined as FLTR, with a vague description that this filters the I2C bus.  What filtering does this bit enable? Where is this documented? 

  • RE: AD7997 - No ACK after LSB of configuration

    Hi,

        

         If it is fine to share your schematic so we can have a better understanding of the problem. Please follow the recommended connection diagram on fig. 22 of the datasheet. You may also want to refer on this post that might be related to your problem…

  • RE: EVAL-7993 not functioning - "Firmware Not Loaded!" error

    Hi, Thom.

    Can you check on your Device Manager and see if you can find AD7993/AD7994 Evaluation Kit? Also, what OS are you working with?

    Regards,

    Karen