|
|
PDF SX1277 Data sheet ( Hoja de datos )
| Número de pieza | SX1277 | |
| Descripción | 137 MHz to 1020 MHz Low Power Long Range Transceiver | |
| Fabricantes | Semtech Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SX1277 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
SX1276/77/78/79
WIRELESS, SENSING & TIMING
DATASHEET
SX1276/77/78/79 - 137 MHz to 1020 MHz Low Power Long Range Transceiver
GENERAL DESCRIPTION
The SX1276/77/78/79 transceivers feature the LoRaTM long
range modem that provides ultra-long range spread
spectrum communication and high interference immunity
whilst minimising current consumption.
Using Semtech’s patented LoRaTM modulation technique
SX1276/77/78/79 can achieve a sensitivity of over -148dBm
using a low cost crystal and bill of materials. The high
sensitivity combined with the integrated +20 dBm power
amplifier yields industry leading link budget making it
optimal for any application requiring range or robustness.
LoRaTM also provides significant advantages in both
blocking and selectivity over conventional modulation
techniques, solving the traditional design compromise
between range, interference immunity and energy
consumption.
These devices also support high performance (G)FSK
modes for systems including WMBus, IEEE802.15.4g. The
SX1276/77/78/79 deliver exceptional phase noise,
selectivity, receiver linearity and IIP3 for significantly lower
current consumption than competing devices.
ORDERING INFORMATION
Part Number
Delivery
MOQ / Multiple
SX1276IMLTRT
T&R
3000 pieces
SX1277IMLTRT
T&R
3000 pieces
SX1278IMLTRT
T&R
3000 pieces
SX1279IMLTRT
T&R
3000 pieces
QFN 28 Package - Operating Range [-40;+85°C]
Pb-free, Halogen free, RoHS/WEEE compliant product
KEY PRODUCT FEATURES
LoRaTM Modem
168 dB maximum link budget
+20 dBm - 100 mW constant RF output vs. V supply
+14 dBm high efficiency PA
Programmable bit rate up to 300 kbps
High sensitivity: down to -148 dBm
Bullet-proof front end: IIP3 = -11 dBm
Excellent blocking immunity
Low RX current of 9.9 mA, 200 nA register retention
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK, LoRaTMand OOK modulation
Built-in bit synchronizer for clock recovery
Preamble detection
127 dB Dynamic Range RSSI
Automatic RF Sense and CAD with ultra-fast AFC
Packet engine up to 256 bytes with CRC
Built-in temperature sensor and low battery indicator
APPLICATIONS
Automated Meter Reading.
Home and Building Automation.
Wireless Alarm and Security Systems.
Industrial Monitoring and Control
Long range Irrigation Systems
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 1
www.semtech.com
1 page  
SX1276/77/78/79
WIRELESS, SENSING & TIMING
Table of contents
Section
DATASHEET
Page
Table 1. SX1276/77/78/79 Device Variants and Key Parameters .................................................................................10
Table 2. Pin Description ................................................................................................................................................11
Table 3. Absolute Maximum Ratings .............................................................................................................................13
Table 4. Operating Range .............................................................................................................................................13
Table 5. Thermal Properties ..........................................................................................................................................13
Table 6. Power Consumption Specification ...................................................................................................................14
Table 7. Frequency Synthesizer Specification ..............................................................................................................14
Table 8. FSK/OOK Receiver Specification ....................................................................................................................16
Table 9. Transmitter Specification .................................................................................................................................17
Table 10. LoRa Receiver Specification .........................................................................................................................19
Table 11. Digital Specification .......................................................................................................................................22
Table 12. Example LoRaTM Modem Performances, 868MHz Band .............................................................................25
Table 13. Range of Spreading Factors ..........................................................................................................................27
Table 14. Cyclic Coding Overhead ................................................................................................................................27
Table 15. LoRa Bandwidth Options ...............................................................................................................................28
Table 16. LoRaTM Operating Mode Functionality .........................................................................................................36
Table 17. LoRa CAD Consumption Figures ..................................................................................................................45
Table 18. DIO Mapping LoRaTM Mode .........................................................................................................................46
Table 19. Bit Rate Examples .........................................................................................................................................47
Table 20. Preamble Detector Settings ...........................................................................................................................53
Table 21. RxTrigger Settings to Enable Timeout Interrupts ..........................................................................................54
Table 22. Basic Transceiver Modes ..............................................................................................................................54
Table 23. Receiver Startup Time Summary ..................................................................................................................57
Table 24. Receiver Startup Options ..............................................................................................................................60
Table 25. Sequencer States ..........................................................................................................................................61
Table 26. Sequencer Transition Options .......................................................................................................................62
Table 27. Sequencer Timer Settings .............................................................................................................................63
Table 28. Status of FIFO when Switching Between Different Modes of the Chip .........................................................67
Table 29. DIO Mapping, Continuous Mode ...................................................................................................................69
Table 30. DIO Mapping, Packet Mode ..........................................................................................................................69
Table 31. CRC Description ...........................................................................................................................................77
Table 32. Frequency Bands ..........................................................................................................................................82
Table 33. Power Amplifier Mode Selection Truth Table ................................................................................................83
Table 34. High Power Settings ......................................................................................................................................84
Table 35. Operating Range, +20dBm Operation ...........................................................................................................84
Table 36. Operating Range, +20dBm Operation ...........................................................................................................84
Table 37. Trimming of the OCP Current ........................................................................................................................85
Table 38. LNA Gain Control and Performances ............................................................................................................86
Table 39. RssiSmoothing Options .................................................................................................................................86
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 5
www.semtech.com
5 Page 
SX1276/77/78/79
WIRELESS, SENSING & TIMING
DATASHEET
1.4. Pin Description
Table 2 Pin Description
Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
SX1276/77/79/(78)
GROUND
RFI_LF
VR_ANA
VBAT_ANA
VR_DIG
XTA
XTB
NRESET
DIO0
DIO1/DCLK
DIO2/DATA
DIO3
DIO4
DIO5
VBAT_DIG
GND
SCK
MISO
MOSI
NSS
RXTX/RF_MOD
RFI_HF (GND)
RFO_HF (GND)
GND
VBAT_RF
VR_PA
GND
PA_BOOST
RFO_LF
Type
SX1276/77/79/(78)
-
I
-
-
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
-
I
O
I
I
O
I (-)
O (-)
-
-
-
-
O
O
Description
SX1276/77/79/(78)
Exposed ground pad
RF input for bands 2&3
Regulated supply voltage for analogue circuitry
Supply voltage for analogue circuitry
Regulated supply voltage for digital blocks
XTAL connection or TCXO input
XTAL connection
Reset trigger input
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Digital I/O, software configured
Supply voltage for digital blocks
Ground
SPI Clock input
SPI Data output
SPI Data input
SPI Chip select input
Rx/Tx switch control: high in Tx
RF input for band 1 (Ground)
RF output for band 1 (Ground)
Ground
Supply voltage for RF blocks
Regulated supply for the PA
Ground
Optional high-power PA output, all frequency bands
RF output for bands 2&3
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 11
www.semtech.com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet SX1277.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SX1272 | Low Power Long Range Transceiver |  Semtech |
| SX1273 | Low Power Long Range Transceiver | Semtech |
| SX1276 | 137 MHz to 1020 MHz Low Power Long Range Transceiver | Semtech Corporation |
| SX1277 | 137 MHz to 1020 MHz Low Power Long Range Transceiver | Semtech Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |