The SFCW (stepped frequency continous wave) signal of 100M~120MHz was used as the reference signal. The retention time of each freqency step was 10ns, and the step number was 3000. The interger N mode was setted where N=125. So the output frequency (Fo) ought to be 12.5~15GHz. But the Fo is 12~13GHz where EV-ADF41513SD2Z was evalutated. When the same reference signal is fed to the ADF4159, the Fo is correct.  Following is the settings.

Parents

您这个是配合哪个VCO在用呢？您可以尝试单频点做参考时，是否俩PLL都能正确锁定？您看到Fo输出频率的同时，是否看了PLL是否输出锁定指示？如果方便，您也可以把详细的配置和电路发出来，也可以发邮件到china.support@analog.com

您这个是配合哪个VCO在用呢？您可以尝试单频点做参考时，是否俩PLL都能正确锁定？您看到Fo输出频率的同时，是否看了PLL是否输出锁定指示？如果方便，您也可以把详细的配置和电路发出来，也可以发邮件到china.support@analog.com

Children
No Data