Datasheet

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SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
IIP2_L
2nd order input intercept point,
highest LNA gain, FRF = 868 MHz,
CW interferer.
F1 = FRF + 20 MHz
F2 = FRF+ 20 MHz +
Δf
-57-dBm
BR_L Bit rate, Long-Range Mode
From SF6, CR = 4/5,
BW = 500 kHz to
SF12, CR = 4/8, BW = 125 kHz
0.24 - 37.5
kbps
RFS_L125
RF sensitivity, Long-Range Mode,
highest LNA gain, LNA boost,
125 kHz bandwidth
using split Rx/Tx path
SF = 6
SF = 7
SF = 8
SF = 9
SF = 10
SF = 11
SF = 12
-
-
-
-
-
-
-
-121
-124
-127
-130
-133
-135
-137
-
-
-
-
-
-
-
dBm
dBm
dBm
dBm
dBm
dBm
dBm
RFS_L250
RF sensitivity, Long-Range Mode,
highest LNA gain, LNA boost,
250 kHz bandwidth
using split Rx/Tx path
SF = 6
SF = 7
SF = 8
SF = 9
SF = 10
SF = 11
SF = 12
-
-
-
-
-
-
-
-118
-122
-125
-128
-130
-132
-135
-
-
-
-
-
-
-
dBm
dBm
dBm
dBm
dBm
dBm
dBm
RFS_L500
RF sensitivity, Long-Range Mode,
highest LNA gain, LNA boost,
500 kHz bandwidth
using split Rx/Tx path
SF = 6
SF = 7
SF = 8
SF = 9
SF = 10
SF = 11
SF = 12
-
-
-
-
-
-
-
-111
-116
-119
-122
-125
-128
-129
-
-
-
-
-
-
-
dBm
dBm
dBm
dBm
dBm
dBm
dBm
CCR_LCW
Co-channel rejection
Single CW tone = Sens +6 dB
1% PER
SF = 7
SF = 8
SF = 9
SF = 10
SF = 11
SF = 12
-
-
-
-
-
-
5
9.5
12
14.4
17
19.5
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
CCR_LL Co-channel rejection
Interferer is a
LoRa
TM
signal
using same BW and same SF.
Pw = Sensitivity +3 dB
-6 dB
ACR_LCW
Adjacent channel rejection
FRF = 868 MHz
Interferer is 1.5*BW_L from the
wanted signal center frequency
1% PER, Single CW tone =
Sensitivity + 3 dB
SF = 7
SF = 12
-
-
60
72
-
-
dB
dB
IMR_LCW
Image rejection after calibration 1% PER, Single CW tone =
Sens +3 dB
-66-dB
FERR_L
Maximum tolerated frequency offset
between transmitter and receiver, no
sensitivity degradation
BW_L = 125 kHz
BW_L = 250 kHz
BW_L = 500 kHz
-30
-60
-120
-
-
-
30
60
120
kHz
kHz
kHz
Symbol Description Conditions Min. Typ Max Unit
Table 10 Electrical specifications: Lora
TM
mode