RFM22B/23B
Table 4. Transmitter AC Electrical Characteristics
Parameter
Symbol
Conditions
Min
413
Typ
Max Units
433MHz band
453
888
935
MHz
MHz
MHz
TX Frequency
Range—RFM22B/23B
F
848
895
TX
868MHz band
915MHz band
FSK Data Rate
DR
0.123
0.123
±0.625
±0.625
—
—
—
256
40
kbps
kbps
kHz
kHz
kHz
FSK
OOK Data Rate
Modulation Deviation
DR
OOK
Δf1
Δf2
Δf
868/915MHz
433MHz
±320
±160
—
Modulation Deviation
Resolution
0.625
—
RES
Output Power
Range—RFM22B
P
P
+1
–8
+20
+13
dBm
dBm
TX
TX
Output Power
—
Range—RFM23B
TX RF Output Steps
P
P
controlled by txpow[2:0]
—
—
3
2
—
—
dB
dB
RF_OUT
TX RF Output Level
–40 to +85 C
RF_TEMP
Variation vs. Temperature
TX RF Output Level
Variation vs. Frequency
P
Measured across any one
frequency band
—
—
1
—
—
dB
RF_FREQ
Transmit Modulation
Filtering
B*T
Gaussian Filtering Bandwith Time
Product
0.5
Spurious Emissions
P
P
= +13 dBm,
OUT
—
—
—
—
–54
–54
dBm
dBm
OB-TX1
OB-TX2
Frequencies <1 GHz
P
1–12.75 GHz, excluding harmonics
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