SX1276(2012) Просмотр технического описания (PDF) - Semtech Corporation
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SX1276 Datasheet PDF : 1 Pages
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SX1276/77/78 Modi edversion
WIRELESS & SENSING
SX1276/77/78 - 137-1050 MHz Ultra Low Power Long Range Transceiver
RX_H
VBAT1&2
VR_ANA
VR_DIG
LNA
Power Distribution System
Single to
Differential
Mixers
PA
TX_H
868/915M
RX_L
LNA
PA
TX_L
169/433M
VR_PA
Divide by N
Frac-N
Synthesizer
XO
32 MHz
XTAL
RC
Oscillator
RSSI AFC
GND
RESET
SPI
RXTX
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
GENERAL DESCRIPTION
Semtech’s SX1276/77/78 family provides ultra long range
while maintaining low current consumption, making it
optimal for numerous applications.
With Semtech’s patented modulation technique the device
can achieve sensitivity of over -140 dBm using a low cost
crystal and bill of materials. The high sensitivity combined
with the integrated +20 dBm power amplifier creates the
highest link budget making it optimal for any application
requiring range. This modulation technique also provides
significant advantages in blocking and selectivity over FSK.
The devices also support high performance (G)FSK for
WMBus, FCC Part 90, 15.4g, and other legacy modes.
Semtech’s technology overcomes a typical trade-off of
performance versus current consumption. The devices
deliver exceptional phase noise, selectivity, receiver
linearity, and IIP3 for significantly lower current consumption
than competing devices.
The devices cover the major ISM bands from 137 MHz to
1050 MHz. For ease of matching, low BOM cost, and higher
performance the SX1276/77/78 family offers separate high
band and low band support for applications wanting to cover
dual bands for world-wide operation, dual band support, or
security against future band allocation changes.
KEY PRODUCT FEATURES
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 -146.5 dBm
Bullet-proof front end: IIP3 = -12 dBm
100 dB blocking immunity
Low RX current of 10 mA, 200 nA register retention
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK, LORA and OOK modulations
Built-in bit synchronizer for clock recovery
Sync word recognition
Preamble detection
115 dB+ Dynamic Range RSSI
Automatic RF Sense with ultra-fast AFC
Packet engine up to 64 bytes with CRC
Built-in temperature sensor and Low Battery indicator
APPLICATIONS
Automated Meter Reading
Wireless Sensor Networks
Home and Building Automation
Wireless Alarm and Security Systems
Industrial Monitoring and Control
ORDERING INFORMATION
Part Number
SX1276
SX1277
SX1278
Delivery
T&R
T&R
T&R
MOQ / Multiple
3000 pieces
3000 pieces
3000 pieces
Rev. 0.0 11th July 2012
Page 1
www.semtech.com
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