• AD7321: FAQ

    FAQ

  • Output code of AD7321

    Q 

    How does the sign-bit together with other 12-bit (Straight binary or
    2-complement) to form a integral code?

     

    A 

    Straight binary & bi-polar :if MSB is 1, the input is positive; if MSB is 0,
    the input is negative
    Straight binary & uni-polar :if…

  • AD7321 or AD7327

    Hi, 

    I made some study for AD7321 for a while and I thought this chip could meet our requirement. But when I tried to purchase the evaluation board to perform a further evaluation, the system said that EVAL-AD7321 was not recommended for new designs and…

  • 关于AD7321获取转换量的问题

        我在网络上和数据手册上都看到AD7321需要在16个SPICLK之后才能获取转换好的数据，但是官方例程中是直接获取数字量的，哪一个才是正确的？我用官方例程没跑出来，后来加了16个clk之后再取值，也没跑出来。取出来的数据在0xff和0x00跳变。电路设计的和手册上一样，就是供电用的±12V。模拟的SPI做过MISO和MOSI短接，能够通信。

        有人用过这款芯片吗，希望能帮助我一下。

  • RE: AD7321 issue

     in the figure above, if I am using the single-ended mode, 12 bits totally is used. But I am not sure which bit will be discarded, the sign bit or the bit DB0? 

    thanks you a lot!

  • RE: AD7321 output serial data in single-ended mode

    Hi Maggie,

    The 13th "bit" in single-ended/pseudo diff mode is just noise, and can be discarded. This is the LSB on the diagram.

    Is there a specific issue that you see when you are reading the data back in your application? What processor are…

  • RE: AD7321 SCLK

    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,
    …

  • RE: IIO driver for ADC AD7321

    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,
    …

  • AD7321芯片容易坏

    问题1：我公司使用AD7321芯片过程中发现容易出问题，不确定芯片是否已经坏了，因为芯片还是有输出信号，不过输出信号和正常工作时不一样，当输入信号有变化时，输出信号也有变化。怀疑是芯片初始化问题，但是重新初始化还是不能正常工作。同一个程序，更换芯片后就正常工作。

    问题2：AD7321 DOUT示波器测量信号时发现，DOUT数字脉冲信号最后一个bit跟电平0位不是垂直的，而是斜线向下到达零位的。

    AD7321电路 ：VDD +12V；VSS -12V， VCC和VDRIVE 5V，单端信号接VIN0…

  • AD7321没有转换完成的标志位，怎么知道可以读取数据了？

    AD7321没有转换完成的标志位，怎么知道可以读取数据了？

    如何才能从AD7321读出完整的采样数据，流程是怎么样的？DataSheet上没有找到具体方法。

    有人说需要等16个CLk才有数据，到底是如何来操作的。