RFM22 Datasheet, PDF (6/150 Pages) –

Table 3. Receiver AC Electrical Characteristics¹
Parameter
Symbol
Conditions
RX Frequency Range
FSYNTH-LB
FSYNTH-HB
Low Band
High Band
RX Sensitivity
PRX_2
(BER < 0.1%)
(2 kbps, GFSK, BT = 0.5,
△f =±5 kHz) ²
PRX_40
(BER < 0.1%)
(40 kbps, GFSK, BT = 0.5,
△f =±20 kHz) ²
PRX_100
(BER < 0.1%)
(100 kbps, GFSK, BT = 0.5,
△f =±50 kHz) ²
PRX_125
(BER < 0.1%)
(125 kbps, GFSK, BT = 0.5,
△f =±62.5 kHz) ¹
PRX_OOK
(BER < 0.1%)
(4.8 kbps, 350 kHz BW, OOK) ²
(BER < 0.1%)
RX Bandwidth²
(40 kbps, 400 kHz BW, OOK) ¹
BW
Residual BER
Performance²
PRX_RES
Up to +5 dBm Input Level
Input Intercept Point, 3^rd
Order²
IIP3RX
f1 = 915 MHz, f2 = 915 MHz,
P1 = P2 = –40 dBm
RSSI Resolution
±1-Ch Offset Selectivity²
(BER < 0.1%)
±2-Ch Offset Selectivity²
(BER < 0.1%)
RESRSSI
C/I1-CH
C/I2-CH
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
≥±3-Ch Offset
Selectivity² (BER <0.1%)
Blocking at 1 MHz²
Blocking at 4 MHz²
Blocking at 8 MHz²
Image Rejection²
Spurious Emissions²
C/I3-CH
1MBLOCK
4MBLOCK
8MBLOCK
ImREJ
POB_RX1
Desired Ref Signal 3 dB above sensitivity.
Interferer and desired modulated with
40 kbps△F = 20 kHz GFSK with BT = 0.5
IF=937 kHz
Measured at RX pins
(LO feed through)
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
RFM22
Min Typ Max Units
240
—
480 MHz
480
—
930 MHz
— –118 -115 dBm
— –107 -104 dBm
— –103 -100 dBm
— –101 -99 dBm
–110 -107 dBm
— –102 -99 dBm
2.6
—
620 kHz
—
0
0.1 ppm
—
–20
— dBm
—
±0.5
— dB
—
–31
— dB
—
–35
— dB
—
–40
— dB
—
–52
— dB
—
–56
— dB
—
–63
— dB
—
–30
— dB
—
—
–54 dBm
6
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