• EVAL-AD8349 material

    I wander the EVAL-AD8349 evaluation board material ,is it FR4 or Rogers material , I can't make sure that if the FR4 material board can go 2.4 GHz

    signal well.In the meanwhile,I used FR4 material at a two layer board to operate AD8349,finding it too…

  • AD8349 input LO signal

    I want to ask the input LO signal is best -6dBm , but I wonder is this -6dBm means the initial single-end -6dBm or each pin -6dBm of difference signals.

    in the meanwhile, how the LO difference signals do into the AD8349 chip,first add two difference signals…

  • RE: AD8349 IQ inputs

    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
  • RE: ADL5385/5382 vs AD8349/8347

    ADL5385: 30 MHz to 2.2 GHz IQ Mod with 2XLO based Phase Splitter (LO Freq is equal to twice the RF Output Frequency)

    AD8349: 700 MHz to 2.7 GHz IQ Mod with IXLO based Phase Splitter

    ADL5382: 700 MHz to 2.7 GHz IQ Demodulator (1XLO)

    AD8347:800 MHz to…

  • ADF4360-3 leakage into AD8349 inputs

    I'm observing LO leakage into the inputs (pins 1 & 2 and 15 & 16) of an AD8349 modulator in a direct conversion transmitter (tuned to 942.8 MHz).  The analog inputs to the modulator originate from an AD9763 DAC with a low-pass anti-aliasing…

  • ADF4360-1 output phase

    Is the two output:RFAout and RFBout the differencial signals?Is the two signals' phase difference 180 deg ?

    Or they are actually in-phase signals?

    I have tried it to find they are of same phase,so it confused me a lot ,because the ADF4630-1 is directly…

  • AD8349的载波抑制问题

    贵公司的专家好,我最近在使用AD8349调制器进行ASK调制和BPSK调制,DAC用的是AD9777,但是调制出来的本振载波抑制只有-10dBc,比一般的系统要求(-20dBc)低很多。I路的基带信号直流偏置已经调到了400mV,峰峰值约为200mV,AD9777都是默认配置,不知道我调哪些地方可以改善载波抑制啊

  • What is the difference between a modulator and a vector modulator?

    The circuit description for the quadrature modulators seems to be the same for the vector modulators. As an example compare the AD8349 modulator with the AD8341 vector modulator. Both split the RF input with a 90 degree difference, then independently…

  • Can I/Q differential output of AD8347 connected to AD9231 directly?

    Hi,

    I have a new design,that I will use AD8347 and AD9231.I got two question about the circuit.

    1.Can the BB amplifier of AD8347 drive the AD9231 directly without off-chip AMP?(No input buffer in AD9231)

    2.The differential input of AD9231 is 2V p-p…

  • 请问I/Q正交调制器AD8346与AD8349可以用于单I或单Ql输入吗?

    如题,如果可以用,应该怎么用?如果不能用,有何建议?