• ADL5375-05 vs -ADL5375-15

    Which is the better for lowest spurs -the 0.5V biased ADL5365-05 vs. the  1.5V biased ADL5375-15?

    I am driving the ADL5375 IQ mod with ADF9788 DAC,  fixed LO freq =900M, with internal DAC DDS set  to 150Mz. The data rate is 225M for Instantaneous BWidth…

  • RE: ADL5375 noise floor

    Hi Dragan,

    During my testing I applied 0.5V common mode voltage to all baseband inputs with slight offsets to cause the LO signal to pop up and pass through (opposite of nulling). Also, I had the on board amplifier bypassed, so looking at the ADL5375…

  • ADL5375

    Hello. I have a problem with output signal (no signal).

    LOIN&LOIP -4dBm (+2Vdc)

    DSOP floating +0.6Vdc

    QBBN, QBBP, IBBN, IBBP no signal (+0.5Vdc)

    VPS1, VPS2 +5Vdc

    RFOUT no signal (+3.4Vdc)

    NC, COMM, EP connected to ground  plane via a low impedance…

  • ADL5375

    What is the level or the range of level signals of ADL5375 for pins IBBP, IBBN, QBBP, QBBN? I mean (for example) something like input sensivity of AD9914.Maybe this information is in the data sheet of ADL5375 too, but unfortunately I couldn't to find…

  • ADL5375 output power

    I'm now testing AD9779A-DPG2-EBZ evaluation board.

    It has TxDAC AD9779A and IQ-modulator ADL5375-05 onboard.

    Modulation data stream is generated from external FPGA and LO input comes from ADF4350-EB1Z.

    Generated RF spectrum works as expected, but…

  • ADL5375&ADL5380

    請問我們在用ADL5375和ADL5380時,如果要做升頻或降頻時,還需要再額外掛MIXER嗎?

  • ADL5375调制

    我用ADL5375调制，加10MHz的IQ数据时，测出来的EVM=1.0，幅度和相位误差基本上为0。

    加100MHz数据时，测出来的EVM=10.2，而且此时的幅度误差和相位误差比较大。幅度误差约4%，相位误差5deg。

    IQ数据是一模一样的，只是采样时钟不同。我用示波器看I+和I-的数据，能看到不是完全的180度。另外，调制后的频谱看着带内波动也比较大。

    我感觉，很显然，EVM是由幅度和相位误差恶化的，可是我不知道问题到底在哪里？

    哪位高人能帮忙分析一下？！

  • RE: operation of ADL5375

    The ADL5375 needs the common mode voltage to operate correctly. This is very common with IQ modulators, as it provides a means of carrier LO nulling. It sounds like you might need just a normal mixer. Take a look at the product search link below. Possibly…

  • ADL5375 footprint problem

    Hi,

    When I have a looked at the datasheet, in page 32 there is a land pattern which was used in the eval board of AD5375. But in page 35 OUTLINE DIMENSIONS is different comparing with the page 32. 

    If you check it you will see e-pad dim of CP-24-7 is…

  • ADL5375 LO s11

    Hello

    I found ADL5375 LO S11 at the forum, is the LO s11 at cold temp available as well? ie -40C

    Thanks

    Jun