
4.1.8.2 RF Receiver General Characteristics for 2.4 GHz Band
Unless otherwise indicated, typical conditions are: T = 25 °C, VBATT = 3.3 V. DC-DC on. Crystal frequency = 38.4 MHz. RF center
frequency 2.45 GHz. Conducted measurement from the antenna feedpoint.
Table 4.12. RF Receiver General Characteristics for 2.4 GHz Band
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
RF tuning frequency range
F
RANGE
2400
—
2483.5
MHz
Receive mode maximum
spurious emission
SPUR
RX
30 MHz to 1 GHz
—
-57
—
dBm
1 GHz to 12 GHz
—
-47
—
dBm
Max spurious emissions dur-
ing active receive mode, per
FCC Part 15.109(a)
SPUR
RX_FCC
216 MHz to 960 MHz, Conducted
Measurement
—
-55.2
—
dBm
Above 960 MHz, Conducted
Measurement
—
-47.2
—
dBm
Level above which
RFSENSE will trigger
RFSENSE
TRIG
CW at 2.45 GHz
—
-24
—
dBm
Level below which
RFSENSE will not trigger
RFSENSE
THRES
CW at 2.45 GHz
—
-50
—
dBm
Note:
1. RFSENSE performance is only valid from 0 to 85 °C. RFSENSE should be disabled outside this temperature range.
4.1.8.3 RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4GHz Band, 125 kbps Data Rate
Unless otherwise indicated, typical conditions are: T = 25 °C, VBATT = 3.3 V. DC-DC on. Crystal frequency = 38.4 MHz. RF center
frequency 2.45 GHz. Conducted measurement from the antenna feedpoint.
Table 4.13. RF Transmitter Characteristics for Bluetooth Low Energy in the 2.4GHz Band, 125 kbps Data Rate
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Power spectral density limit
PSD
LIMIT
Per FCC part 15.247 at 10 dBm
—
—
8
dBm/
3kHz
Per FCC part 15.247 at 20 dBm
—
—
8
dBm/
3kHz
Spurious emissions out-of-
band, excluding harmonics
captured in SPUR
HARM,FCC
.
Emissions taken at
POUT
MAX
, PAVDD connec-
ted to external 3.3 V supply
SPUR
OOB_FCC
Per FCC part 15.205/15.209,
Above 2.483 GHz or below 2.4
GHz; continuous transmission of
CW carrier, Restricted Bands
—
-47
—
dBm
Note:
1. Output power limited to 14 dBm to ensure compliance with FCC specifications.
2. For 2476 MHz, 1.2 dB of power backoff is used to achieve this value.
3. For 2478 MHz, 5.8 dB of power backoff is used to achieve this value.
BGM13S Blue Gecko
Bluetooth
®
SiP Module Data Sheet
Electrical Specifications
silabs.com
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