RFM31 Datasheet, PDF (6/137 Pages) –

RFM31
Table 3. Transmitter AC Electrical Characteristics¹
Parameter
Symbol
Conditions
Min Typ Max Units
RX Frequency Range
FSYNTH-LB
FSYNTH-HB
Low Band
High Band
240
—
480 MHz
480
—
960 MHz
RX Sensitivity
PRX_2
(BER < 0.1%)
— –118 -115 dBm
(2 kbps, GFSK, BT = 0.5,
△f =±5 kHz) ²
PRX_40
(BER < 0.1%)
— –107 -104 dBm
(40 kbps, GFSK, BT = 0.5,
△f =±20 kHz) ²
PRX_100
(BER < 0.1%)
— –103 -100 dBm
(100 kbps, GFSK, BT = 0.5,
△f =±50 kHz) ²
PRX_125
(BER < 0.1%)
— –101 -98 dBm
(125 kbps, GFSK, BT = 0.5,
△f =±62.5 kHz) ¹
PRX_OOK
(BER < 0.1%)
(4.8 kbps, 350 kHz BW, OOK) ²
–110 -107 dBm
(BER < 0.1%)
(40 kbps, 400 kHz BW, OOK) ¹
— –102 -99 dBm
RX Bandwidth²
BW
2.6
—
620 kHz
Residual BER
Performance²
Input Intercept Point, 3^rd
Order²
PRX_RES
IIP3RX
Up to +5 dBm Input Level
f1 = 915 MHz, f2 = 915 MHz,
P1 = P2 = –40 dBm
—
0
0.1 ppm
—
–20
— dBm
RSSI Resolution
±1-Ch Offset Selectivity²
(BER < 0.1%)
RESRSSI
C/I1-CH
Desired Ref Signal 3 dB above
sensitivity.
—
±0.5
— dB
—
–31
— dB
±2-Ch Offset Selectivity²
Interferer and desired modulated with
—
–35
— dB
(BER < 0.1%)
C/I2-CH _{40 kbps△F = 20 kHz GFSK with BT =}
≥±3-Ch Offset
0.5, channel spacing = 150 kHz
—
Selectivity² (BER <0.1%) ^C/I3-CH
Blocking at 1 MHz²
1MBLOCK ^{Desired Ref Signal 3 dB above sensitivity.}
—
Blocking at 4 MHz²
4MBLOCK ^{Interferer and desired modulated with}
—
Blocking at 8 MHz²
8MBLOCK ^{40 kbps△F = 20 kHz GFSK with BT = 0.5}
—
Image Rejection²
ImREJ
IF=937 kHz
—
Spurious Emissions²
POB_RX1
Measured at RX pins
—
(LO feed through)
–40
— dB
–52
— dB
–56
— dB
–63
— dB
–30
— dB
—
–54 dBm
Notes:
1. All specification guaranteed by production test unless otherwise noted.
2. Guaranteed by qualification.
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