• AD7904 returns "Input/Output Error" for all connected voltage lines (Using AD7923 Driver)

    I've been spending a few days trying to get this kernel module hooked up properly, and I'm running out of options on the software front.

    Here is the output from the command line. I get "Invalid argument" for scale, and "Input/Output Error" for…

  • Any sample code available for AD7923?

    Any sample code available for AD7923, that could give complete picture for its operation?

  • RE: How to set the control-register of the AD7923 correctly?

    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,
  • AD7923 stops converting

    Hello,

    My ADC didn't work after a while.

    After replacing the ADC7923 it works for some minutes but than the DOUT goes TRISTATE during converting operation.

    see picture enclosed.

    SPI signals from FPGA seems of, on the oscilloscope picture enclused…

  • 关于AD7923芯片的通信问题

    最近使用了AD7923这个芯片,SPI通信时,不能正常读取数据,利用示波器观察发现,DOUT引脚拉不了低电平,按规格书描述,DOUT会有2位低电平出来的.

       请问这是什么原因造成呢?有没有例程呢?

  • [征文]+[ 转载]AD7923芯片的使用心得

    [征文]+[ 转载]AD7923芯片的使用心得

      近来,在制作脉冲信号参数测量仪的过程中,用到了ADI公司的芯片。该制作脉冲信号参数测量仪的要测量的参数有:测量脉冲信号的幅值、频率、周期、占空比、上升和下降时间等参数。它的基本功能如下:(1)脉冲信号幅值范围为:0.2VP5VP,测量精度≤±2%
    2)脉冲信号频率范围为:1Hz100KHz;频率测量精度≤±0.1%,周期测量精度≤±0.1%
    3)占空比测量范围为:10%~90%,测量误差≤10%;
    4)比较电平设置范围:0.2V5V,…

  • 请推荐几款A/D芯片

    请推荐几款A/D芯片,基本要求如下:

    通道数:不限
    输入范围:有0V-2.5V,也有0V-5V
    输入类型:单端输入
    位数:14位及以上,最好是16位
    工作原理:不限
    输出格式:不限
    速率:500Hz及以上
    封装:不要BGA,尽量不要QFN,其他不限
    价格:越低越好

    之前用的是AD7923,除了分辨率不够其他都能满足需求

  • RE: Unable to read multiple channels w IIO buffers

    Ok, I verified this with AD7923 and it works with multiple channels.

    However I don't understand the returned values. How should I match output value and the channel?

    In current test I have 3.3V on channel 0 and 0V on other 3 channels. iio_info correctly…

  • RE: QEC INIT

    Only in /home/mars/zc706/linux_from_scratch/linux-2019_R2/drivers/iio/adc/: ad400x.o
    Only in /home/mars/zc706/linux_from_scratch/linux-2019_R2/drivers/iio/adc/: .ad400x…

  • RE: threshold ADC conversion

    Hello,

    Using our selection table, you can find the ADC as per your needs.

    http://www.analog.com/ps/psthandler.aspx?pstid=10169&la=en

    We have number of multichannel ADCs with a throughput rate higher than 150KSPS and SPI interface. Some of them…