CMX983 Datasheet, PDF (90/93 Pages) CML Microcircuits – Programmable Channel Filter

Analogue Front End (AFE) for Digital Radio
CMX983
Figure 41 PLL2 Output Spectra
Note: The above graph shows the output spectra for f_COMP = 4.8MHz (RDIV = $4) and 250A charge pump
current. Without fast lock: Loop Filter (reference design as shown in Figure 21)
C1 = 1n5F / C2 = 9n4F (4n7F//4n7F) / R2 = 4k7ohms / R3 = 1k2ohms / C3 = 180pF
 2015 CML Microsystems Plc
90
D/983/6