• AD7634的输入信号被干扰问题

    您好,我在使用贵司的AD7634芯片的时候,出现了下列描述的现象,能否帮忙看看是哪边出现了问题?

    我使用的电路图几乎与数据手册上推荐的一致,也采用了软件配置,以及从机串行模式,时序没有问题,读数也很正常,但是在持续读数的过程中,发现busy信号直接影响了模拟部分的各个信号(包括电源±15v,5V,DGND,尤其对输入的差分信号影响格外严重。例如我输入的是3.3V信号,在用示波器观察中发现在采样过程中,输入的信号会随着busy信号的上升下降沿有大的抖动,如附件图片所示。我的配置为每秒采样启动…

  • RE: AD7634 - Histograms near the extremity of the scale

    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,
  • AD7634操作代码

    本人采用从时钟串行输出,发现ADC输出电平很混乱 没有逻辑,小弟采用的MCU为DSP28035

    现在求AD7634的操作到吗

  • AD7634 Pin capacitance

    Hi everyone,

    On page 20 from AD7634 datasheet it's stated that "during the acquisition phase for ac signals, the impedance of the analog inputs IN+ and IN-, can be modeled as a parallel combination of Capacitor Cpin and the network formed by the…

  • [AD7634] Voltage level and reference for PDREF/PDBUF pins at high state

    Hi,

    In an A/D board under development, I'm using separate ground planes for analog (AGND) and digital (DGND = OGND) references, which can be connected together using a solder jumper or back-to-back schottky diodes underneath the A/D converter, as…

  • >Unclearence regarding some Pins of AD7634

    Hello,

    in my project I am using the AD7634 as AD-Converter. The AD7634 is configured in 18bit Warp Mode, parallel interface, +10/-10V input signal.

    I want to control the AD7634 with the µC AT32UC3A Atmel Device.

    There are four pins from the AD7634…

  • RE: Need help with the power supply for AD7634

    Mikhail,


    I just stumbled onto your ADIsimPower Excel issue comment.


    We may have fixed the issue already but in some instances the language setting of your operating system (not Excel) affects how Excel interprets commas and periods ("," or ".")…

  • RE: EVAL-AD7634 - Stand-alone mode

    Hi Alan,

    Yes it is on serial mode. I tried to run it stand alone in bipolar, serial mode with hardware configuration.

    And this what I found:

    The AD7634 should work in 4 ranges, 2 unibipolar and 2 bipolar ranges. This should be configured with pin…

  • EVAL-AD7634 - External serial clock

    Hello,

    I recently acquired an EVAL-AD7634 board and wish to operate it as stand-alone (serial slave mode), with a TI DSP TMS320F28335 as serial master. I would like to know if it's possible to provide the serial clock from the DSP to the ADC through…

  • Problems using the single-to-differential driver for ADC AD7634

    Hello,

    I'm using the EVAL-AD7634 development kit, which input stage consists of two buffers using low noise AD8021 op amps. My signal is single-ended, so I would like to implement the proposed Single-To-Differential (S2D) driver from the datasheet of…