SI4705 datasheet(11/69 Pages) SILABS

Part #	SI4705

Description	Si47XX ANTENNA, SCHEMATIC, LAYOUT, AND DESIGN GUIDELINES

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Manufacturer	SILABS [Silicon Laboratories]

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11 / 69 page

AN383

Rev. 0.8

11

Table 8. Optional Bill of Materials: Emissions Mitigation

Designator

Description

Note

C4

VCO filter capacitor

3.3 pF, 0402, C0G

For filtering of VCO energy

(Si4704/05/06/1x/2x only)

C5

VCO filter capacitor

NP, 0402, C0G

Placeholder pad for alternate FMI VCO

filter configuration

C14

VCO filter capacitor

6 pF, 0402, C0G

For filtering of VCO energy

C15, C18

VCO filter capacitor

33 pF, 0402, C0G

For filtering of VCO energy

C16, C17

VCO filter capacitor

3.3 pF, 0402, C0G

For filtering of VCO energy

(Si473x only)

F1

VCO filter bead

Murata BLM15GA750SN1

For filtering of VCO energy

L1

VCO filter inductor

15 nH (Murata LQW18ANR15NJ00D)

For filtering of VCO energy

(Si4704/05/06/1x/2x only)

L2

VCO filter inductor

10 nH (Murata LQW18AN10NJ00D)

For filtering of VCO energy

(Si473x only)

R19, R20

VCO mitigating resistor,

330

, 0402

For filtering of VCO energy

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