SI4820-DEMO Datasheet, PDF (3/10 Pages) Silicon Laboratories – Si4820/24 DEMO BOARD USER’S GUIDE

Power:
BAT1: 2 cells AAA battery holder
S1: Power on / off
Audio Connectors:
J5: Mono audio headphone output
Antenna Selections:
AM antenna: Ferrite stick antenna for AM
J1: BNC connector for FM/ SW conductive testing or FM whip antenna
J2: FM antenna selector
Si4820/24-DEMO
1
2
3
1-2: HP ANT (J5)
2-3: BNC (J1)
J6: SMA connector for AM conductive testing
J3: AM antenna selector
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1-2: AM Ferrite Antenna
2-3: SMA for AM Conductive Test (J6)
Audio Output Test Point:
For the general specification test, TP3 is the recommended audio signal test point. The audio test instrument
should be connected to TP3 to get more accurate test results. J5 can also be used as an audio test point, but the
test results may not be entirely accurate under some circumstances.
1
GND
2
AOUT
Rev. 0.1
3