• RE: AD9215

    R and C should match the lpf setup you need on the VIN+ side

  • AD9215选型

    请问AD9215BRUZ和AD9215BRUZRL7之间的区别,选哪个型号更为合适???

  • AD9215: Using a DC input

    Q 

    What is the best configuration for the input of this device to measure a single
    dc voltage? I have currently tied Vin- input to half AVDD and decoupled it with
    100pF, and I am feeding in a DC signal into Vin+ via a 50Ohm resistor with
    …

  • AD9215输出数据不正常

    没接信号时输出数据一直在跳变   大概从500-700左右   

    画原理图时REFB引脚接地了   会不会是这个原因导致的？

  • AD9215内部参考电压不正确

    最近做了一块PCB，上面的AD9215使用内部参考电压，正常应该是1V。但是有一块板子的AD9215出问题了，刚上电时参考电压120mv，逐渐增大，最后稳定在电源电压3.3V附近。这导致刚上电AD9215不工作。请问这是什么原因？是片子坏了吗？

  • AD8331和ad9215的滤波波形问题

    我这边做了一个简单的示波器采集模块。前端使用AD的芯片

    AD8331ARQZ
    AD9215BRUZ

    处理器为xilinx的fpga

     

    现在做出的2批PCB，使用同样的电路设计。和同一批次的AD芯片以及fpga芯片。使用的固件和软件相同。

    只是手工焊接的2批使用的电阻电容批次不同。目前出现了不同的波形效果。差异如附图

    请教2个问题：

     

    1：附件PDF文档为采集部分的原理图…

  • AD9215输入端串联的33欧电阻的作用

    在看AD9215的参考电路时，注意到信号输入端都串联一个33欧电阻，并且引脚对地接一个电容，这个电阻的作用是什么呢？仅仅是和电容构成低通滤波器的吗？

    如下图中所标的电阻和电容的作用呢：

    看到过一些AD的输入端有时也会串联一些电阻比较小的电阻，这些电阻是起到什么作用呢，谢谢！！

  • RE: AD9218

    Hi,

    The primary front-end configuration difference is the AD9218 Analog Input Common Mode is internally self-biased, whereas with the AD9215 the Ain CM is not internally self-biased. You have to establish the Ain CM externally in your AD9215 configuration…

  • RE: Question about AD8370

    Hi, Kazu,

        The AD8370 runs on single 5V supply, so the input and output common-mode range are ~ +/- 1.6V around mid-supply (i.e., from 0.9 to 4.1V), but max. output swing will be reduced as the output common-mode level approaches either extreme.  The…

  • RE: Minimum Frequency of Inputs for AD9214 and AD6644

    Hi David,

    I started the design (and layout) with the AD9214 but I am questioning my wisdom due to the end of the device.

    The AD9215 is also not a new comer, but its a little newer and the Eval boards are available (I was told the AD9214 Eval boards…