• AD9218

    Hi,

    I have some problems for designing a circuit based on AD9218. This is my first time to learn this IC, and make PCB layout by myself.


    The datasheet of AD9218 shows that pins 13,30,31,48 are the same pin for Analog Supply (Vd), but they aren't…

  • AD9218

    Hi,

    I m designing a new circuit based on AD9218 ADC and BF537 via PPI interface.

    I have some questions about the ADC Vref and input range.

         Firstly, i wonder what is the effect of Vref to the input voltage range. My target is sampling 0V to 2V voltage…

  • AD9218 reference

    have a new set of ADs AD9218 in an updated design.

    the reference is measuring 1.31 V (outside the 1.25 V tolerance).   pins 5,6,7 (reference and A & B) are all tied together.  what could cause the reference to go out of tolerance

  • AD9218 Power Supplies

    Hi,

    I'm wondering about the timing requirements regarding the analog and digital supplies for the AD9218.

    Can these supplies be initialized at different times? Must one come before the other if so?

    Are there any effects of supplying two different…

  • AD9218 interferences at L-band

    Q 

    We are developing a bistatic radar using the AD9218.
    We are using the evaluation board of AD9218, and have a sampling
    frequency of 80MHz. The processing technique we use can detect
    weak signals. We have seen that the AD9218 circuit generates…

  • AD9218: Power supply lower than specified

    Q 

    Digital supply voltage is specified in table as 2.7Vmin to 3.6Vmax. But in
    several places in the text, the data sheet says the digital supply can be
    run at 2.5V. I would like to use a 2.5V Vdd supply - is it safe for me to
    do so and what…

  • RE: AD9218's Vd and Ground

    Hi Huiliang,

    1. Yes, the AD9218 can operate with a stable Vd supply ranging between 2.7V to 3.6V (3.0V nominal) as noted in the Power Supply specifications Table 1 on datasheet page 3.

    2. We do not differentiate between Analog and/or Digital Ground…

  • RE: How to calculate AD9218's slope?

    Hello Mayott,

    I attached our ADC daughter board's schematic design.

    How to understand "This is a 10V part with a 2V input range, so an LSB is going to be ~2mV."? I remmenber AD9218's input range is 1V p-p. 

    You can find that we used…

    • ad9218_daughterboard_v3.pdf

  • AD9218上电时序烧片子的问题

    在是用AD9218的时候，VD和VDD都是用的3.3V，两组电源同时上电没有问题，但是VD3.3V先上电，VDD3.3V后上电，反复几次就会烧掉AD9218（完全可以重现）。而datasheet上没有看到上电的问题，请问是需要两组电必须同时上电吗？

  • 有没有和AD9218 替代升级的片子

    AD9218 为双路ADC 最高到105MSPS,双路AD可以同时独立工作，功耗也低，是2001年左右的产品，现在有没有对应的升级产品 要求一下几点

    1、双路10位或者12位

    2、双路可独立工作（独立CLK)

    3、功耗要比ad9218低

    4、价格低