• questions on ad 7622

    connections for ad7622 to have 2.048V on ref pin?

  • 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 sampling at 800kSPS and 1MSPS

    Hello,

    My customer has the following question:

     

    Question:

    Do you know what the performance issues would be if this device is sampled at 800kSPS and 1MSPS?


    Is Figure 13 the whole story on performance?


    Thanks,

    Belenie

  • 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 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~~

  • BF512, PPI, DMA0 and AD7622 adc

    I am trying to use System Services to operate an AD7622 A/D converter.  The ADC is connected to the PPI and I have programmed the DMA.  I have connected the AD7622's BUSY signal to the BlackFin's DMAR0 (PG2) pin.  I can not find an adi_dma_Control…

  • RE: ADC evaluation board choose

    Hi Yake,

    I have attached a list of some of the ADCs that fit your criteria of 2MSPS sampling rate or higher at resolution of 12bits or more.

    You may also wanted to check the ADI website and do a parametric search (http://www.analog.com/ps/psthandler…

  • 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…

  • Best ADC for High voltage inputs?

    I’m trying to decide which ADC to use for a high voltage front end.  Here are the requirements for the ADC:

    Fixed input range +/- 50V

    16 bit resolution

    10 Meg input impedance

    1 MHz Bandwidth

    2 or 3 MSPS or greater

    Serial or SPI output

    I’ve been…