• AD9548 vs AD9547

    Hi,

    Is there any difference between the AD9548 and AD9547 apart from the minimum reference frequency and the number of inputs and outputs?

    The AD9547 is specified with a minimum reference frequency of 1kHz. Would this device be able to lock on a frequency…

  • AD9547 frequency jitter

    I'm using the AD9547 in my application and I've noted a jitter at low frequencies (around or below 1Hz), that impacts on my final application.

    I've compared my application against the evaluation board (I've the AD9548 eval board but the parts…

  • AD9547 DPLL Lock

    Hello,

    Our customer, T.W., asks: We are using the AD9547 to generate a 35.84MHz output clock that is locked to GPS.  We have a 20MHz crystal to supply the clock frequency.  The GPS unit can supply just about any multiple of 1PPS we want.  For now, we are…

  • AD9547 Reference input level

    I need to use the AD9547 reference clock inputs in single ended mode. My reference input signal (that coming from user's) is a 50ohm AC coupled and can vary from -15 to +10dBm (50 ohm loaded).

    How I can interface this signal to guarantee the AD9547…

  • AD9547 SYSCLK PLL stability

    Hello,

    I'm currently using an AD9547 with a 10MHz OCXO as an system clock input. The problem I'm having is that the system clock will not remain stable (checking via system clock stability signal on a M pin) with the duty cycle of the OCXO I'm using…

  • AD9547 sync with Ref

    Hi. I made a board with your AD9547 chip.

    My system clock = 1000MHz

    DDS = 71.68MHz

    Out1 and Out0 = 35.84MHz

    Ref = single ended 100KHz ( 2dBm power ) from a signal generator

    I am able to see 35.84MHz at Out1 and not at Out0. The reason for this…

  • AD9547, AD9548, AD9549 EV-Boards

    Hi,

    I have a few questions regarding the AD954x Evaluation boards.

    1. Can the AD9548 EV-board be used to evaluate the performance of the AD9547 provided reference is >1kHz and I/O's are limited to the number available on the AD9547? (We do have a few…

  • AD9547 Soft Reset Q

    Does the soft reset perform the same as toggling the reset pin or power on reset?

    Thanks,

    -j

  • AD9547 clock out amplitude surge

    Hello,

    I am using AD9547 to generate two clock signals -> a 325 MHz LVDS signal on out0 pin and a 81 MHz CMOS signal on out1 pin. I see that at -40 degrees, the out0 pin has amplitude surges, but the out1 is stable. Is this normal?

  • AD9361 AD9364 reference clock interface AD9547

    Hi,

    I need to use AD9364 with external reference clock. To lock to an external reference and generate a clean reference clock (40MHz) for AD9364 I use the AD9547. The AD9364 reference clock input accept a level of 1.3Vpp but the AD9547 can output signal…