Product Brief
SM1211
Ultra Low Power Integrated UHF Transceiver Module
General Description:
The purpose of this module is to provide a development
platform of the SX1211. User can build his application
prototype by simply connecting the module to his target
microcontroller and start developing his application
software. The SM1211 module integrates the SX1211
reference design (chip + external components) plus
miscellaneous useful connectors.
SX1211 is a low cost single-chip transceiver operating
in the frequency ranges from 863-870, 902-928 MHz
and 950-960 MHz. The SX1211 is optimized for very
low power consumption (3 mA in receiver mode). It
incorporates a baseband modem with data rates up to
150 kb/s. Data handling features include a sixty-four
byte FIFO, packet handling, automatic CRC generation
and data whitening. Its highly integrated architecture
allows for minimum external component count while
maintaining design flexibility.
All major RF communication parameters are
programmable and most of them may be dynamically
set. It complies with European (ETSI EN 300-220
V2.1.1) and North American (FCC part 15.247 and
15.249) regulatory standards.
Note: This module is also used for the SX1211 Starter Kit.
Key Product Features:
• Small form factor design footprint <150 mm
2
Optimized Low-cost design – 2 layers PC-board
• Low Rx power consumption: 3 mA
• Low Tx power consumption: 25 mA @ +10 dBm
• Good reception sensitivity: down to -107 dBm
at 25 kb/s in FSK, -113 dBm at 2 kb/s in OOK
• Programmable RF output power: up to +12.5 dBm
in 8 steps
• Packet handling feature with data whitening and
automatic CRC generation
• RSSI (Received Signal Strength Indicator)
range from Rx noise floor to 0 dBm
• Bit rates up to 200 kb/s, NRZ coding
• On-chip frequency synthesizer
• FSK and OOK modulation
• Incoming sync word recognition
• Built-in bit-synchronizer for incoming data and
clock synchronization and recovery
Applications:
•
•
•
•
•
•
Active RFID PHY
Battery powered remote sensors
Wireless alarm and security systems
Automated meter reading
Home and building automation
Industrial monitoring and control
• Remote wireless control
W W W .S E M T E C H . C O M
Product Brief
SM1211 – Ultra-Low Power Integrated UHF Transceiver Module
Characteristics
Parameter
Operating Conditions
Operating temperature range
Operating supply voltage
Digital input level high - VIH
Digital input level low - VIL
Current Consumption
Max current consumption
Rx mode current consumption
Sleep mode current consumption
RF Characteristics
Frequency range
Max input power
Data rate
Frequency deviation
Spurious emission
Rx sensitivity
RSSI dynamic range
Adjacent channel rejection
Blocking immunity
-107
70
27
-48
1.56
1.56
33
50
863
902
870
902
0
200
32
200
-47
dBm
kbps
kbps
Khz
dBc
dBm
dB
dB
dBm
At the antenna port
FSK Mode
OOK Mode
FSK Mode
Offset = 200 - 600 kHz, unmodulated carrier, Fdev = 50 kHz
868 MHz, BR=25 kb/s, Fdev=50 kHz, fc=100 kHz
Ranging from sensitivity
Offset = 300 Khz
Offset = 1 Mhz
MHz
Freq. and Channel BW are programmable 860-960 Mhz
30
3
0.1
mA
mA
µA
Tx Power = +12.5 dbm RLoad= 50
Ω
All modules active
SPI port active
-20
2.1
75
25
+85
3.6
°C
V
%
%
Percentage of Vdd
Percentage of Vdd
Min
Typ
Max
Unit
Condition
Conditions: Temp = 25°C, VDD = 3.3 V, crystal frequency = 12.8 MHz, unless otherwise specified.
Pin Configuration
Pin #
1
3
5
7
9
11
13
15
17
19
Signal
SCK
MOSI
IRQ_1
NSS_CONFIG
CLKOUT
Pin #
2
4
6
8
10
12
14
16
18
20
Signal
VDD (3.3 V)
GND
PLL_LOCK
MISO
IRQ_0
Module layout
IRQ_1
DATA
NSS_DATA
Ordering Information
Part Number
SM1211-C915
SM1211-C868
10 Pin DIL Header
Pin Package
Visit our website to locate the most current product specifications, datasheets and contact information for your local Semtech Field Applications Engineer.
W W W .S E M T E C H . C O M
SM1211-PB-0408
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