AN851 Datasheet, PDF (24/25 Pages) Silicon Laboratories – Si468X SCHEMATICS AND LAYOUT GUIDE

AN851
The varactor capacitor slope and intercept, and VHFSW switch API properties for the recommended network shall
be set to the following:
FW Image
FM
DAB
Slope (property 0x1710)
0xEDB5
0xF8A9
Intercept (property 0x1711)
0x01E3
0x01C6
Switch(property 0x172)
1 (closed)
1 (closed)
If the VHFSW switch position required for both FM and DAB band is the same (close—as in the above network)
then L2 and L3 can be replaced with a single inductor equivalent to the parallel combination of L2 and L3.
24
Rev. 0.2