RFM22B/23B
Table 3. Receiver AC Electrical Characteristics
Parameter
Symbol
Conditions
Min
Typ
Max Units
433MHz band
413
848
895
—
453
888
935
—
MHz
MHz
MHz
dBm
RX Frequency
F
RX
868MHz band
915MHz band
(BER < 0.1%)
Range—RFM22B/23B
RX Sensitivity
–121
–114
–104
–101
P
RX_2
5 kHz)
(2 kbps, GFSK, BT = 0.5, f =
special crystal is used on the module
(BER < 0.1%)
(1.2 kbps, FSK, BT=0.5,
f = 45kHz)
(BER < 0.1%)
(100 kbps, GFSK, BT = 0.5,
f = 50 kHz)
(BER < 0.1%)
(125 kbps, GFSK, BT = 0.5,
f = 62.5 kHz)
—
—
—
—
—
—
dBm
dBm
dBm
P
RX_40
P
P
RX_100
RX_125
(BER < 0.1%)
(4.8 kbps, 350 kHz BW, OOK)
—
—
–110
–102
—
—
dBm
dBm
P
RX_OOK
(BER < 0.1%)
(40 kbps, 400 kHz BW, OOK)
RX Channel Bandwidth
2.6
—
—
0
620
0.1
kHz
BW
BER Variation vs Power
Level
Up to +5 dBm Input Level
ppm
P
RX_RES
RSSI Resolution
—
—
—
—
±0.5
–31
–35
–40
—
—
—
—
dB
dB
dB
dB
RES
RSSI
1-CH
2-CH
3-CH
1-Ch Offset Selectivity
2-Ch Offset Selectivity
3-Ch Offset Selectivity
Desired Ref Signal 3 dB above sensitivity,
BER < 0.1%. Interferer and desired modu-
lated with 40 kbps F = 20 kHz GFSK with
BT = 0.5, channel spacing = 150 kHz
C/I
C/I
C/I
Blocking at 1 MHz Offset
Blocking at 4 MHz Offset
Blocking at 8 MHz Offset
Image Rejection
Desired Ref Signal 3 dB above sensitivity.
Interferer and desired modulated with
40 kbps F = 20 kHz GFSK with BT = 0.5
—
—
—
—
–52
–56
–63
–30
—
—
—
—
dB
dB
dB
dB
1M
4M
8M
BLOCK
BLOCK
BLOCK
Rejection at the image frequency.
IF=937 kHz
Im
REJ
Spurious Emissions
Measured at RX pins
—
—
–54
dBm
P
OB_RX1
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6
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