• Question about ADCLK905

    Hello,

    I am thinking of using the ADCLK905 as a clock buffer for ADF4106 (using a 10 MHz reference), but I have a few questions:

    - Is needed any specifical waveform at the ADCLK905 input (sine, square..)? In page 9 of the datasheet appear some figure…

  • ADCLK905 junction-to-case thermal resistance

    I'm looking for the junction-to-case thermal resistance of ADCLK905. The data sheet only lists the junction to ambient. Thanks!

  • Sine wave input ADCLK9xx (ADCLK905)

    Hi,

       I'm looking at using the ADCLK905 to provide a differential PECL clock for the AD9914- wondering if I can give it a sinewave  as per the single-ended example Fig 29 and what minimum amplitude it would require at the input?

    Thanks,

    -Dave

  • Question re: ADCLK905 demo board

    The Gerbers for the EVAL-ADCLK905 board show 17-mil traces for the 50-ohm lines going to and from the chip, and the Gerbers call for RO4003C material.  The traces on the actual board, though, are about 8 mils wide.  That makes me think the RO4003C layers…

  • AC Coupling with Capacitor or Balun for ADCLK905 (~3GHz input)

    I have a clock input (50 ohm single-ended from SMA) that will be in the range of 10MHz to about 3GHz. I'd like to buffer that clock using the ADCLK905 before routing to a PLL IC. 

    My question is: is there an advantage to balun-coupling this input…

  • Low frequency output voltage noise in ADCLK905 / ADCLK907 / ADCLK925 family

    Hello,

    i wonder if the RMS voltage noise of the ADCLK905 family of chips can be calculated from the specifications. More specifically: If i apply a constant input signal, what is the output voltage RMS noise in the frequency range of 0-100MHz (assuming…

  • Cannot get the correct signal waveform on ADCLK905 outputs

    Hello. In a question I sent time ago about ADF4158 and low frequencies, there was an answer with a reference to circuit note CN-0290.

    I have built a test board to check it  (I almost mimic all the circuitry in figure 2 of the circuit note), but the output…

  • 关于ADCLK905、ADCLK914无法正常工作的问题

    我想通过时钟buffer芯片为AD9957正交调制上变频提供方波参考时钟,我的时钟参考电路是利用ADF4351将10MHz晶振变频到需要的40.8MHz,然后通过ADCLK905对信号整形,作为AD9957的参考时钟输入。

    但目前的问题是ADCLK905一直没有整形的作用,如下图。

    目前只是将前级的信号进行了放大,并没有整形作用。上升下降时间与数据手册上的80ps还差了很远。不知道是什么原因。

    我的输出端接是采用的应用手册里面的端接。

    后级链接的是AD9957.

    示波器用的高阻探头…

  • 请问LVCOMS时钟直流耦合驱动ADCLK905输入应如何连接?

    请问使用3.3V的LVCOMS时钟,在直流耦合驱动ADCLK905输入时,电路应如何连接?

    谢谢!

  • RE: RefClk input from AD9694-500EBZ

    Have you tried checking if correct power were supplied to ADCLK905? Checking the schematic, there should be 3.3v to the Vcc and to the pull-up resistors at the output of the clock buffer. Also to make sure that correct input is fed to D pin of ADCLK905…