• AD7682 Bipolar Differential Mode

    Hi there,

    I'm trying to use an AD7682 to sample a differential sensor signal and am seeing some strange results. If I sample IN0 and IN1 separately as single-ended inputs and subtract the two, I get a nice clean signal. If I try using the bipolar differential…

  • Some questions about AD7682

    Question 1:

    The AD7682 datasheet describes that there is a pin called COM which can connect to 0V or VREF/2V. But in which case we should connect the COM pin to the 0V and in which case connect to VREF/2V? What's the main function of the COM pin?…

  • AD7682 linux driver

    Could I use  AD7476A IIO Single Channel Serial ADC Linux Driver also for AD7682  or exist other drivers?

  • Problem reading AD7682

    Hello,

    I'm trying to read out an AD7682 with a LPC1113/301, but I only read back zero's. I'm want to use the internal reference of 2V5 (supply is 3.0V), but when measuring this on the REFIN pin it's almost 0V. When trying to read back the CFG register…

  • AD7682 communication with SPI

    Hello,

    I am working with the ADC AD7682 and I have problems with the communication through SPI. I am sending to the ADC the configuration word 0b11110000001001 and it answers me only 0x7FFF. Here a screenshot of the communication:

    Has somebody an…

  • AD7682使用问题

    对AD7682的配置和时序可能是有理解上的不对，导致输出的是乱码。

    时序设计如下：AD转换的周期为5.3us,，采样时钟为50MHZ，CFG配置为“11111111111111”；

    采样RAC模式，；

    SCK的周期为50MHZ，SDIN是在CNV下降沿后20ns进行配置。

    不知道这样子设计的时序是不是有问题，导致了AD7682没有回复？且SDIN输出波形也不对；

    硬件设计方面，AD7682供电电压为5V，VIO3.3V，参考电压为5V。

    求指导！谢谢！

    下边是使用XILINX chipscope…

  • AD7682 Configuration problem

    Hello,

    I'm using the AD7682 ADC with a msp430 talking spi.  After a power I'm trying to configure the device but the configuration I'm reading back does not match the one I'm sending.  Here's what I'm sending:

    0xFF70 (Which is…

  • AD7682 and AD7688 busy indicator

    Q 

    1.
    I am using AD7682 and AD7688 components. I do accesses through a PLD and I am
    wondering how using the busy indicator.

    In the AD7682 datasheet, in the paragraph "General timing with a busy
    indicator", it is written: "At the…

  • AD7682 temperature sensor

    Hi guys,

    I am testing this ADC and it works really good. Great noise features.

    My asking is for check my temperature sensor equation.

    To get the temperature, I send the configuration word: 0xB524(16 bit left align) that is:

    - Overwrite configuration …

  • Problem reading AD7682

    I am able to acquire proper reading after 3 conversion cycles. Can anybody please explain me, whether this ADC behaviour is common or i am making some mistake .

    i am using external VREF of 2.048V

    VCC = 3.3V