SX1276IMLTRT View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SX1276IMLTRT Datasheet PDF : 132 Pages
| |||
SX1276/77/78/79
WIRELESS, SENSING & TIMING
DATASHEET
2.5.5. Electrical Specification for LoRaTM Modulation
The table below gives the electrical specifications for the transceiver operating with LoRaTM modulation. Following
conditions apply unless otherwise specified:
Supply voltage = 3.3 V
Temperature = 25° C
fXOSC = 32 MHz
bandwidth (BW) = 125 kHz
Spreading Factor (SF) = 12
Error Correction Code (EC) = 4/6
Packet Error Rate (PER)= 1%
CRC on payload enabled
Output power = 13 dBm in transmission
Payload length = 64 bytes
Preamble Length = 12 symbols (programmed register PreambleLength=8)
With matched impedances
Table 10 LoRa Receiver Specification
Symbol
Description
Conditions
Min.
Typ
Max
Unit
IDDR_L
Bands 2&3, BW=7.8 to 62.5 kHz
-
11.0
-
mA
Bands 2&3, BW = 125 kHz
-
11.5
-
mA
Bands 2&3, BW = 250 kHz
-
12.4
-
mA
Supply current in receiver LoRaTM
Bands 2&3, BW = 500 kHz
-
13.8
-
mA
mode, LnaBoost off
Band 1, BW=7.8 to 62.5 kHz
-
9.9
-
mA
Band 1, BW = 125 kHz
-
10.3
-
mA
Band 1, BW = 250 kHz
-
11.1
-
mA
Band 1, BW = 500 kHz
-
12.6
-
mA
IDDT_L
Supply current in transmitter mode
RFOP = 13 dBm
RFOP = 7 dBm
-
28
-
mA
-
20
-
mA
IDDT_H_L
Supply current in transmitter mode
with an external impedance
transformation
Using PA_BOOST pin
RFOP = 17 dBm
-
90
-
mA
BI_L
IIP2_L
Blocking immunity,
CW interferer
2nd order Input Intercept Point
Unwanted tones are 20 MHz above
the LO
offset = +/- 1 MHz
offset = +/- 2 MHz
offset = +/- 10 MHz
Highest LNA gain
89
dB
-
94
-
dB
100
dB
-
+55
-
dBm
3rd order Input Intercept point
Band 1
IIP3_L_HF
Unwanted tones are 1MHz and 1.995 Highest LNA gain G1
-
-11
-
dBm
MHz above the LO
LNA gain G2, 5dB sensitivity hit
-
-6
-
dBm
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 19
www.semtech.com
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