• Common mode input voltage question about AD7622 and LTC2389-16

    I have a signal with 2.6Vpp and centered around 1.3V(VCM) and a DC voltage 1.3V(VCM).

    Now, I want to fetch these two source into LTC2389-16 or  AD7622  to have a differential bipolar AD conversion and remove common mode noise.

    And I have some question abo…

  • 关于AD7621 AD7622 AD7641

    在使用AD7621 AD7622 AD7641时存在一个同样的问题,即bit0到bit4(pin9、pin10、pin11、pin12和pin13)没有输出,只有bit5到bit15有输出。

    导致输出数据如图 低五位一直是0。有朋友遇到过同样的问题吗?求指教谢谢!

  • RE: BF512, PPI, DMA0 and AD7622 adc

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  • RE: AD7622 sampling at 800kSPS and 1MSPS

    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.

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  • AD7622信号输出

    使AD7622工作在2MSMS,IN-直接接地,IN+直接函数信号发生器,发现如下问题:

    (1)函数信号发生器产生1K、5K的正弦信号时,将AD7622转换后的信号使用,matlab画图,波形严重失真;

    (2)产生10K,100K、800K的正弦信号时,将AD7622转换后的信号使用matlab画图时发现波形是真实的。

    请问这是什么原因!

  • AD7622伪差分输入下的分辨率和量程

    你好!请问AD7622在,内部参考Vref=2.048、伪差分的输入下(IN-接地),它的分辨率还会是还会是62.5uV吗?并且在伪差分的输入模式下,它的量程范围会变成0-Vref吗?希望有大神解释下,谢谢!

  • AD7622 ADC precision when used unipolar input

    Hi,

    we use AD7622 ADC for our project. This chip has a difereintial input but we need unipolar. In the datasheet I found a circuit for conversion of unipolar signal to diferential, which is required for the ADC:

    We see that here a precision of the…

  • AD7622差分输入

    我使用AD7622做ADC,前面用AD8138做了一个单转差分,输出是正常的。但AD7622转换出来的数据只是+IN的输入,并没有和-IN端差分相减?

  • AD7622 数据采集问题,spi stm32

    请问哪位知道我在用STM32的spi 的主模式采集AD7622数据时 采集上的数据为什么一直是16位全1 ,用示波器看sclk有时钟输入, BUSY,CNVST,SYNC均没有任何波形显示,引起这个问题的原因的查找方向应该是什么样的呢,还有弱弱的问句:就是CNVST是有软件来控制它是否开始转换吗?

    或者有例程可以参考,哪位有任何思路见解,尽管留言~~

  • questions on ad 7622

    connections for ad7622 to have 2.048V on ref pin?