BGM121 Datasheet, PDF (23/96 Pages) Silicon Laboratories – IoT end devices and gateways

4.1.8 2.4 GHz RF Transceiver Characteristics
BGM121/BGM123 Blue Gecko Bluetooth ^® SiP Module Data Sheet
Electrical Specifications
4.1.8.1 RF Transmitter General Characteristics for the 2.4 GHz Band
Unless otherwise indicated, typical conditions are: T_OP = 25 °C,VDD = 3.3 V, DC-DC on. Crystal frequency = 38.4 MHz. RF center
frequency 2.45 GHz. Conducted measurement from the antenna feedpoint.
Table 4.11. RF Transmitter General Characteristics for 2.4 GHz Band
Parameter
Maximum TX power
Minimum active TX Power
Output power step size
Symbol
POUT_MAX
POUT_MIN
POUT_STEP
Output power variation vs
supply at POUT_MAX
POUT_{VAR_V}
Output power variation vs
temperature at POUT_MAX
POUT_{VAR_T}
Output power variation vs RF POUT_{VAR_F}
frequency at POUT_MAX
RF tuning frequency range F_RANGE
Test Condition
CW
-5 dBm < Output power < 0 dBm
0 dBm < output power <
POUT_MAX
2.4 V < V_VREGVDD < 3.3 V using
DC-DC converter
From -40 to +85 °C, PAVDD con-
nected to DC-DC output
Over RF tuning frequency range
Min
—
—
—
—
—
—
2400
Typ
Max
Unit
8
—
dBm
-26
—
dBm
1
—
dB
0.5
—
dB
2.2
—
dB
1.5
—
dB
0.4
—
dB
—
2483.5
MHz
4.1.8.2 RF Receiver General Characteristics for the 2.4 GHz Band
Unless otherwise indicated, typical conditions are: T_OP = 25 °C,VDD = 3.3 V, DC-DC on. Crystal frequency =38.4 MHz. RF center fre-
quency 2.440 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
RF tuning frequency range F_RANGE
2400
—
2483.5
Receive mode maximum
spurious emission
SPUR_RX
30 MHz to 1 GHz
1 GHz to 12 GHz
—
-57
—
—
-47
—
Max spurious emissions dur- SPUR_{RX_FCC} 216 MHz to 960 MHz, Conducted
—
-55.2
—
ing active receive mode, per
Measurement
FCC Part 15.109(a)
Above 960 MHz, Conducted
—
-47.2
—
Measurement
Level above which
RFSENSE will trigger¹
RFSENSE_TRIG CW at 2.45 GHz
—
-24
—
Level below which
RFSENSE will not trigger¹
RFSENSE_THRES
—
-50
—
Note:
1. RFSENSE performance is only valid from 0 to 85 °C. RFSENSE should be disabled outside this temperature range.
Unit
MHz
dBm
dBm
dBm
dBm
dBm
dBm
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