EFR32FG12 Datasheet, PDF (58/183 Pages) –

EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
Electrical Specifications
4.1.10.5 Sub-GHz RF Transmitter characteristics for 490 MHz Band
Unless otherwise indicated, typical conditions are: T = 25 °C, VREGVDD = AVDD = IOVDD = 3.3 V, DVDD = RFVDD = PAVDD.
RFVDD and PAVDD path is filtered using ferrites. Crystal frequency=38.4 MHz. RF center frequency 490 MHz.
Table 4.24. Sub-GHz RF Transmitter characteristics for 490 MHz Band
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
RF tuning frequency range F_RANGE
470
—
510
MHz
Maximum TX Power¹
POUT_MAX
PAVDD connected directly to ex-
18.1
ternal 3.3V supply
20.3
23.7
dBm
Minimum active TX Power POUT_MIN
-44.9
—
dBm
Output power step size
POUT_STEP
output power > 0 dBm
—
0.5
—
dB
Output power variation vs
POUT_{VAR_V}
at 20 dBm;1.8 V < V_VREGVDD <
—
4.3
—
dB
supply, peak to peak
3.3 V, PAVDD connected directly
to external supply
Output power variation vs
temperature, peak to peak
POUT_{VAR_T}
-40 to +85C at 20 dBm
—
0.2
0.9
dB
Output power variation vs RF POUT_{VAR_F}
frequency
—
0.2
0.4
dB
Harmonic emissions, 20
SPUR_{HARM_CN} Per China SRW Requirement,
—
dBm output power setting,
Section 2.1, frequencies below
490 MHz
1GHz
-40
-36
dBm
Per China SRW Requirement,
—
Section 2.1, frequencies above
1GHz
-36
-30
dBm
Spurious emissions, 20 dBm SPUR_{OOB_CN} Per China SRW Requirement,
—
-54
—
dBm
output power setting, 490
Section 3 (48.5-72.5MHz,
MHz
76-108MHz, 167-223MHz,
470-556MHz, and 606-798MHz)
Per China SRW Requirement,
—
-42
—
dBm
Section 2.1 (other frequencies be-
low 1GHz)
Per China SRW Requirement,
—
-36
—
dBm
Section 2.1 (frequencies above
1GHz)
Note:
1. Supported transmit power levels are determined by the ordering part number (OPN). Transmit power ratings for all devices cov-
ered in this datasheet can be found in the Max TX Power column of the Ordering Information Table. .
silabs.com | Building a more connected world.
Rev. 1.0 | 53