Product Brief SEMTECH WIRELESS & SENSING PRODUCTS SX1211 Ultra-low Power Multi-Channel UHF-band Transceiver WORLD’S LOWEST RECEIVE CURRENT TRANSCEIVER (<3mA) Applications: 3x lower RX current than competitive devices • • • • • • • Key Features: • 3 mA current consumption in receive mode • Rx sensitivity -107 dBm @ 25 kbit/s (FSK), -110 dBm @ 2 kbit/s (OOK) • Programmable RF output power: up to +12.5 dBm in 8 steps • FSK and OOK modulation • Data rates programmable from 1.56 to 200 kbit/s (FSK) • 64-byte FIFO for transmit/receive data buffering and transfer via SPI bus • RSSI (Received Signal Strength Indicator) range from noise floor to 0 dBm • Packet Handling, CRC generation and Data Whitening • Incoming sync word recognition • Built-in bit-synchronizer for incoming data and clock synchronization and recovery • 868, 915 and 960 MHz frequency bands • 5 x 5 mm TQFN32 RoHS-compliant • Low external component count • FCC DTS compliant (US ISM-band operation without frequency-hopping) • Satisfies ETSI EN 300-220-1 and FCC part 15.247 & 15.249 regulations Security and Alarm Systems Wireless Sensor Networks Sub-Metering Personal Area Network Sports & Health Equipment Home and Building Automation KONNEX™ Systems • Industrial Monitoring and Control Block Diagram: Transmission I RF RFIO 2nd Stage Mixers PA Q I LO1 Tx Q RSSI I 1st Stage Mixers 2nd Stage Mixers Q IF Gain Phase-shift to frequency shift conversion (FSK Mode) (DDS, DACs, Interpolation Filters) LO2 Tx Reception LNA Modulation 1st Stage Mixers LO1 Rx Filtering/ Amplification OOK Demod Digital Demodulator FSK Demod SPI Control CLKOUT DATA LO2 Rx Sync word Frequency Synthesis PLL (Comparator, VCO, Filter, Dividers) XTAL LO1 Tx LO1 Rx LO2 Tx LO2 Rx PLL_LOCK FIFO Post Demod Loop Filter W W W .SE MTE C H .C OM Product Brief SX1211 Ultra-low Power Multi-Channel UHF-band Transceiver Characteristics Parameter Min Typ Max Unit Condition Operating Conditions Operating temperature range -40 85 °C Operating supply voltage 2.1 3.6 V Current Consumption Current consumption Rx Current consumption Tx 3 mA 16.0 mA +1 dBm 25.0 mA +10 dBm 0.2 2 µA 863 870 MHz 902 928 MHz 950 960 MHz 1.56 200 kbit/s FSK 1.56 32 kbit/s OOK Current consumption, sleep mode RF Characteristics Frequency range Data rate (programmable) -8.5 Tx output power (programmable) Rx sensitivity 12.5 dBm -107 dBm -110 dBm OOK Modulation: 2 kb/s NRZ, Carrier Frequency=869 MHz Temp=25oC, Conditions: VDD=3.3V, crystal frequency=12.8 MHz, carrier frequency= 915 MHz, modulation FSK, data rate=25 kb/s, ∆f=50 kHz, BW(SSB)=100 kHz, BER=0.1%, unless otherwise specified. STARTUP TIME CHART TYPICAL APPLICATION CIRCUIT SPI Bus To Host MCU Icc RX(ON) - Actual use of Receiver 3.0mA RX setting time SX1211 PLL startup SMA SAW Filter Z - Match 1.3mA XTO startup 80μA 10μA Average 10μA Achievable 1.5ms 0.8ms 500μs Duty Cycle: 2 seconds Time VCO Tank Loop Filter Visit our website to locate the most current product specifications, datasheets and contact information for your local Semtech Field Applications Engineer. W WW WW W .. S SE EM M TT E EC CH H .. C CO OM M SX1211-PB-0408 Crystal