RFM22
Table 3. Receiver AC Electrical Characteristics1
Parameter
RX Frequency Range
RX Sensitivity
Symbol
FSYNTH-LB
FSYNTH-HB
PRX_2
Conditions
Low Band
Min
Typ
—
Max Units
240
480
—
480
930
MHz
MHz
dBm
High Band
—
(BER < 0.1%)
–118
-115
(2 kbps, GFSK, BT = 0.5,
2
△f =±5 kHz)
PRX_40
(BER < 0.1%)
—
—
—
–107
–103
–101
-104
-100
-99
dBm
dBm
dBm
(40 kbps, GFSK, BT = 0.5,
2
△f =±20 kHz)
PRX_100
PRX_125
PRX_OOK
(BER < 0.1%)
(100 kbps, GFSK, BT = 0.5,
2
△f =±50 kHz)
(BER < 0.1%)
(125 kbps, GFSK, BT = 0.5,
1
△f =±62.5 kHz)
(BER < 0.1%)
(4.8 kbps, 350 kHz BW, OOK)
(BER < 0.1%)
–110
–102
-107
-99
dBm
dBm
2
—
1
(40 kbps, 400 kHz BW, OOK)
2
BW
2.6
—
620
0.1
kHz
RX Bandwidth
Residual BER
—
0
ppm
Up to +5 dBm Input Level
PRX_RES
2
Performance
rd
—
f1 = 915 MHz, f2 = 915 MHz,
—
–20
dBm
Input Intercept Point, 3
IIP3RX
RESRSSI
C/I1-CH
2
P1 = P2 = –40 dBm
Order
RSSI Resolution
—
—
±0.5
—
dB
dB
2
2
Desired Ref Signal 3 dB above sensitivity.
Interferer and desired modulated with
40 kbps△F = 20 kHz GFSK with BT =
0.5, channel spacing = 150 kHz
—
–31
±1-Ch Offset Selectivity
(BER < 0.1%)
—
—
—
—
–35
–40
dB
dB
±2-Ch Offset Selectivity
(BER < 0.1%)
C/I2-CH
C/I3-CH
≥±3-Ch Offset
2
Selectivity (BER <0.1%)
2
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
Blocking at 1 MHz
1MBLOCK
4MBLOCK
8MBLOCK
ImREJ
2
Blocking at 4 MHz
2
Blocking at 8 MHz
2
IF=937 kHz
Image Rejection
2
Measured at RX pins
(LO feed through)
–54 dBm
Spurious Emissions
POB_RX1
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
6
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