• AD7492 artifacts

    Hello!

    I am using the AD7492 ADC to convert an analog signal at about 0.1 MSPS but at irregular intervals I am getting single samples which are way off. The samples always contain many 1-bits near each other e.g. 0x3FF0 or oxE000. I have outputted the…

  • AD7492噪声

    下面是AD7492测试的时候,采样频率为100KHZ,我们测量的是频率10Khz的一些信号,示波器上能够看出来,模拟量是没有噪声的,但是用AD7492采样的时候,下面图上是我们约40ms的时候我们的信号,但是出现了一些毛刺,也就是噪声,怎么样能解决这些问题。

    AD7492

  • AD7492:reference

    Hi!

    I want to take the internal reference from the REFOUT pin AD7492. There is no typical connection diagram for it in AD7492 Datasheet. How can I use it in a system correctly?

  • the noise of AD7492

    from the figure of the bellow,we use the samping frequency 100khz  to samp the signals,when the time is 40ms,the vibration sigals is coming ,but the analog sinals is no noise(by observating the oscilloscope),and the frequency of analog sinals is about…

  • the work mode of ad7492

    according to the schematic of AD7492,The pin 11 of the chip is PS/FS,when the pin is high,the chip is in partial sleep mode,and when the pin is low,the chip is in full sleep mode,however,when the pin is impending,the chip is in normal mode?

  • AD7492有没有正常模式

    我在使用AD7492芯片,这个芯片的11引脚PS/FS部分休眠和完全休眠引脚,高电平的时候是部分休眠,低电平的时候是完全休眠,我想问一下,能否不让处于休眠模式,是不是悬空的时候就可以不让处于休眠模式吗?

  • 请教:我要如何处理模拟开关和ADC的电源?AD7492

    请教:如图中AB两处,我应如何处理两处的电源?

    系统简化成两块电路板,一块是模拟信号处理,另一块模拟转数字的采集卡,两个板卡电源相同,在外部分拆分两路供给两个板子,现在问题是为避免形成环路(这样能减少引入的50Hz干扰),和减少数字电路对模拟电路的干扰,我应该如何处理两处的电源?

    A处是模拟开关供电,由于有数字芯片对其控制,电源应该为数字板上的电源,但因为控制的是模拟信号,在芯片内部数字电源与模拟信号会不会相互串扰?

    B处是adc,相同的疑问,adc需要对模拟信号采样,adc芯片的agnd和dgnd引脚分开接还是接在一起…

  • AD7492BRUZ referencing

    Hi!

    The AD7492 datasheet says that the internal 2.5 V reference is available for external referencing. The EVAL-AD7492SDZ User Guide showing the connection of REF OUT with +input of the AD8021AR what have typical Input Bias Current 7.5 uA.
    I want to connect…

  • EVAL-AD7492SDZ Schematic

    Hi,

    I want to reproduce a power supply for AD7492 from EVAL-AD7492SDZ. But I'm not sure that schematic from UG-371 is correct (figure 25, page 14).

    I think that D803 and R807 must be connected to Q801, L803 must be connected to R805 (but I can…

  • AD7492BRUZ outputting only a subset of the possible values

    I am making a sensor sampling circuit with an AVR microcontroller sampling my AD7492BRUZ ADC at about 500 Hz (low frequency just for testing).

    The problem I have is that the ADC doesn't output all digital values within its 12 bit range. Instead, it will…