Problems with AD7739

Hello. I'm using ad7739 with avr through spi.

In the communication pin DOUT AD7739 does not change its state (0 or 1 depending on the internal pullup microcontroller). Pin CS is low.

Is there any idea , what's the problem ? Thank you!


P.S. Excuse my English, please

  • 0
    •  Analog Employees 
    on Feb 25, 2016 5:51 PM

    Hi Samoylov,

    My apologies for the delayed response. I noticed in your schematic that you connected DIN of AD7739 to MISO of the microcontroller and DOUT to MOSI. It should be the other way around, DIN should be connected to MOSI and DOUT should be connected to MISO. Can you confirm that this is the case? The DIN pin is where data is written to the device and DOUT pin is where data is read.



  • 0
    •  Analog Employees 
    on Aug 2, 2018 3:23 PM
    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,
    EZ Admin