CC1121
High Performance Low Power RF Transceiver
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Power Supply
Applications
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Wide supply voltage range (2.0 V – 3.6 V)
Low current consumption:
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Ultra low power wireless systems with channel spacing
down to 50 kHz
170 / 315 / 433 / 868 / 915 / 950 MHz ISM/SRD band
systems
Wireless Metering and Wireless Smart Grid (AMR and
AMI)
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RX: 2 mA in RX Sniff Mode
RX: 17 mA peak current in low power mode
RX: 22 mA peak current in high
performance mode
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IEEE 802.15.4g systems
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TX: 45 mA at +14 dBm
Home and building automation
Wireless alarm and security systems
Industrial monitoring and control
Wireless healthcare applications
Wireless sensor networks and Active RFID
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Power down: 0.3 ꢀA
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Programmable output power up to +16 dBm with
0.4 dB step size
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Automatic output power ramping
Configurable data rates: 1.2 to 200 kbps
Supported modulation formats: 2-FSK, 2- GFSK,
4-FSK, 4-GFSK, MSK, OOK
Regulations
Suitable for systems targeting compliance with:
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WaveMatch: Advanced digital signal processing for
improved sync detect performance
Europe
US
ETSI EN 300 220
ETSI EN 54-25
RoHS compliant 5x5mm QFN 32 package
FCC CFR47 Part 15
FCC CFR47 Part 24
Peripherals and Support Functions
Japan
ARIB STD-T96
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Enhanced Wake-On-Radio functionality for automatic
low-power receive polling
Key Features
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Separate 128-byte RX and TX FIFOs
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High performance single chip transceiver
Includes functions for antenna diversity support
Support for re-transmissions
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Excellent receiver sensitivity:
-120 dBm at 1.2 kbps
Support for auto-acknowledge of received packets
TCXO support and control, also in power modes
-110 dBm at 50 kbps
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Blocking performance: 86 dB at 10 MHz
Adjacent channel selectivity: 60 dB
Automatic Clear Channel Assessment (CCA) for listen-
before-talk (LBT) systems
Very low phase noise: -111 dBc/Hz at 10 kHz
offset
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Built in coding gain support for increased range and
robustness
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Digital RSSI measurement
Support for seamless integration with the CC1190 for
increased range giving up to 3 dB improvement in
sensitivity and up to +27 dBm output power
Description
The CC1121 is a fully integrated single-chip radio transceiver
designed for high performance at very low power and low
voltage operation in cost effective wireless systems. All
filters are integrated, removing the need for costly external
SAW and IF filters. The device is mainly intended for the
SRD (Short Range Device) frequency bands at 274-320
MHz, 410-480 MHz and 820-960 MHz.
The CC1121 provides extensive hardware support for packet
handling, data buffering, burst transmissions, clear
channel assessment, link quality indication and Wake-On-
Radio. The CC1121 main operating parameters can be
controlled via an SPI interface. In a typical system, the
CC1121 will be used together with a microcontroller and only
few external passive components.
PRODUCTION DATA information is current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty. Production processing does
not necessarily include testing of all parameters.
SWRS111B – REVISED APRIL 2012
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