• 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…

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

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

  • 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 Mux


    Please let me know about Ron of multiplexer. in AD7091R-8.

    For example,  the datasheet of  AD7329 which the device is like AD7091R-8 ( Muxout -> ADC in) describes  below

      MUXOUT+ Capacitance (datasheet P. 6)

      Resistance including  on resistance…

  • AD7091R: FAQs

    Can the ADC inputs exceed the reference voltage or go below ground?


    The ADC inputs should not exceed the reference voltage or go below ground by
    more than 0.3V
    as this may result in the ADC being damaged. If this is a common condition then

  • AD7091R-5 I2C


    I'm a DFAE in Japan. Our customer give us a question. There is a MOSFET inside SDA pin of AD7091R-5. On the other hand, is there NO MOSFET inside SCL pin of AD7091R-5? According to Table 5, we couldn't see Open-drain output about SCL as follows.…

  • 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…