RFM42/43
Table 3. Transmitter AC Electrical Characteristics1
Symbol
Conditions
Min
Typ
Max
Unit
s
Parameter
Low Band
240
—
480
MHz
TX
Range1
Frequency
FSYNTH-LB
High Band
480
—
930
FSYNTH-HB
FSK Modulation
Data Rate2
1
1.2
—
—
128
40
kbps
kbps
kHz
DRFSK
DROOK
Δf
OOK Modulation
Data Rate2
Modulation
Deviation1
Production tests maximum limit of 320
kHz
±0.625
—
±320
—
Modulation
0.625
—
kHz
ΔfRES
Deviation Resolution
Power control by txpow[2:0] Register
Production test at txpow[2:0] = 11 Tested
at 915 MHz
Output Power
Range1 (RFM43)
–8
+11
+8
+13
—
dBm
dBm
dBm
PTX
PTX_max
PTX
Max Output
Tested at 315-915 MHz
+13
—
Power(RFM43)
Power control by txpow[2:0] Register
Production test at txpow[2:0] = 11 Tested
at 915 MHz
Output Power
Range1 (RFM42)
+17
Max Output
Power(RFM42)
TX RF Output
Steps2
Tested at 315-915 MHz
+15
+17
3
—
—
dBm
dB
PTX_max
controlled by txpow[2:0] Register
—
PRF_OUT
TX RF Output Level
Variation vs.
Voltage2
Measured from VDD=3.6 V to VDD=1.8 V
—
—
2
2
—
—
dB
dB
dB
PRF_V
TX RF Output
Level2 Variation vs.
Temperature
TX RF Output Level
Variation vs.
Frequency2
–40 to +85 ℃
PRF_TEMP
Measured across any one frequency
band
PRF_FREQ
—
—
1
—
—
Transmit Modulation
Filtering2
Gaussian Filtering Bandwith Time
Product
B*T
0.5
POUT =11dBm, Frequencies <1 GHz
1–12.75 GHz, excluding harmonics
—
—
–54
–54
dBm
Spurious
Emissions2
POB-TX1
—
—
dBm
POB-TX2
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
6
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