We have not checked and specified the propagation delay on frequency conversion products like ADL5372. So no data to share at this time unfortunately. Would you mind letting us know what makes you concern about this propagation delay for better understanding…
Hello Wayne,
We checked it at Modulator RFoutput(Vout, pin#13). Figure 5 shows baseband(I and Q) frequency response. We either kept baseband input level or calibrate out the variation over baseband frequency to ADL5372. And we also calibrated out RF…
It was designed and characterized upto 2.2GHz. No data to show the performance above 2.2GHz and so can't say a specific number for the top end frequency since we have not characterized fully. There would be performance degradation including output…
上海，浦东新区碧波路889号，从事基站RRU开发和架构设计，关注ADI高速产品例如时钟：AD9549、AD9523、ADC：AD6657、AD6674、DAC：AD9142、AD9154、AD9144、PLL：ADF4351、解调器：ADRF6820、OP：ADL5566、AD8376、调制器：ADL5375、ADL5371、ADL5372等等。
您好！
您测量到的是本振信号没有了吗？建议您先通过MUXOUT和锁定指示检查锁相环是否真正锁定。如果确定锁定后，还失锁，那么请检查在这段时间内，电源，地，参考输入信号是否有干扰信号。此外，还应检测MCU是否向ADRF6755写入了其他控制字。对于IQ的布线，应保证对称。对于IQ平衡和边带抑制可参考附件内文档。
是的，IQ基带信号应为共模电压为500mV，450mVp-p的交流信号。对于正交调制器单边带抑制，这里有一篇应用笔记，请见附件。正交调制器为非线性器件，应检查IQ基带信号以及本振信号，是否有其他频率分量。
The AUX DACs are not primarly meant to correct DAC output offset but to help correcting the LO leakage when a dual DAC is used with a quadrature modulator. This LO leakage is caused by analog offset in the inputs of the quadrature modulator which can…
A few more questions/comments/debug suggestions:
Q.
Could you please tell me how we test the P1dB of an IQ Modulator like the ADL5375 or ADL5370/1/2/3/4? Since the P1dB is so high, how do you apply a baseband signal of such a high high level?
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What is the Thermal Resistance of LFCSP packages used in ADL5370/1/2/3/4/5 Modulators?
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A.
Thermal Resistance, expressed in °C…