• Simple C example for AD7091R

    I need to do some prototyping with an AD7091R-4 ADC to verify some HW design choices.  I've been searching with minimal luck for an actual example in C of setting up and using the AD7091R over SPI.

    I thought I had found one via links on the analog…

  • RE: ad7091R


    You absolutely can read from channel 0 to channel 3 (1-4) in sequential order.   Assuming you are using the AD7091R-4, you can simply program the channel register (ADDR = 0x01) with code 0x000F to enable channels 0 to 3 for conversion.  

    If you…

  • RE: is there any simulation model for AD7091R ? I want to use a FPGA to connect to AD7091R to get data

    Are there any plans for VHDL or Verilog behavioral models for this device in the near future?

  • stm32 SPI Reading from AD7091R

    Hello friends,
    We used the CN-0336 reference design for our analog input module design. There is AD7091R 12-bit ADC on this design. I searched the documents of the relevant design and tried to read the design that we made specifically for the time diagrams…

  • RE: AD7091R-5 GPO1、2 Attributes


    GPO1 and GPO2 are CMOS (push/pull) type outputs.  Note that the GPO1 is only available in command or autocycle modes.  IN sample mode GPO1 is configured as the CNVST input which is CMOS as well.


  • AD7091R-5

    The page 8 of AD7091R-5 datasheet describes VDrive as "The voltage range on this pin is 1.8 V to 5.25 V and may differ from the voltage range at VDD, but must never exceed it by more than 0.3 V", however AD7091R does not have this limitation.…

  • AD7091R


    By using external reference would it increase measurement accuracy ?

    If so, which reference IC is recommended ?

  • AD7091R-8

    I'm trying to set up communication with AD7091R-8. In setup I send following SPI command: 0X0CFF, 0X08FF, 0XFFFF, 0XFFFF, 0X00FF. Then I periodically send 0X0020 and I'm trying to read channel 5. I'd like to read one channeland them sequential readings…

  • AD7091R weirdness


    I have a AD7091R application which is outputting 'improperly justified data' at lack of a better description. The first bit shifted out doesn't appear to be the MSB, rather the results of a previous conversion - the 8th bit shifted out appears to…

  • AD7091R-8  Power-On initialization, CONVST reset not working


    I did send my question in this discussion:

    AD7091R-4 Malfunctioning 

    As we are having similar issue.  Basically initializing the ADC with 66 pulses of CONVST does not seem to work...

    I can provide all probing or logging if needed.

    Hope someone…