I have a question about input common-mode voltage range of AD9248.
In the page-5 of CN0320 circuit note, the common-mode voltage between ADRF6510 and AD9248 is 1.5 V and 3 V and 2.25V is recommended.
But the input common-mode voltage range of AD9248 is described in page-17 of the datasheet, and the range is 0.5V to 2.0V (@ vref=1.0V) .
VCMmin = Vref/2 = 0.5V
VCMmax = (AVDD+Vref)/2 = 2.0V
2.25V is out of common-mode voltage range of AD9248.
Could you please teach me why are there mis-match about common-mode voltage range ?