EFR32FG1 Datasheet, PDF (50/101 Pages) Silicon Laboratories – Electronic Shelf Labels

EFR32FG1 Flex Gecko Proprietary Protocol SoCFamily Data Sheet
Typical Connection Diagrams
V_DD
C2 C3
C4
C5 C6
C7 C8
L0 C9
FB1
C0
C1
RFVDD
C9
X0
HFXTAL_N
HFXTAL_P
AVDD
C10 C11
LFXTAL_P
LFXTAL_N
PAVDD
X1
Figure 5.3. EFR32FG1 Typical Application Circuit: Configuration with DC-DC Coverter (PAVDD from VDD)
5.2 RF Matching Networks
Typical RF matching network circuit diagrams are shown in Figure 5.4 Typical 2.4 GHz RF impedance-matching network circuits on
page 49 for applications in the 2.4GHz band. Application-specific component values can be found in the EFR32 Reference Manual.
For low RF transmit power applications less than 13dBm, the two-element match is recommended. For OPNs supporting high power
RF transmission, the four-element match is recommended for high RF transmit power (> 13dBm).
2-Element Match for 2.4GHz Band
PAVDD
PAVDD
2G4RF_IOP
2G4RF_ION
L0
50Ω
C0
4-Element Match for 2.4GHz Band
PAVDD
PAVDD
2G4RF_IOP
2G4RF_ION
L0
L1
50Ω
C0
C1
Figure 5.4. Typical 2.4 GHz RF impedance-matching network circuits
5.3 Other Connections
Other components or connections may be required to meet the system-level requirements. Application Note AN0002: "Hardware De-
sign Considerations" contains detailed information on these connections. Application Notes can be accessed on the Silicon Labs web-
site (www.silabs.com/32bit-appnotes).
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