CC1121
High Performance Low Power RF Transceiver
Power Supply
Applications
o
o
Wide supply voltage range (2.0 V – 3.6 V)
Low current consumption:
Ultra low power wireless systems with channel spacing
down to 50 kHz
170 / 315 / 433 / 868 / 915 / 920 / 950 MHz ISM/SRD
band systems
Wireless Metering and Wireless Smart Grid (AMR and
AMI)
-
-
-
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
IEEE 802.15.4g systems
-
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
o
Power down: 0.3 μA
Programmable output power up to +16 dBm with
0.4 dB step size
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:
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-T108
Enhanced Wake-On-Radio functionality for automatic
low-power receive polling
Key Features
Separate 128-byte RX and TX FIFOs
High performance single chip transceiver
Includes functions for antenna diversity support
Support for re-transmissions
o
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
o
o
o
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
Built in coding gain support for increased range and
robustness
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
Temperature sensor
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.
VDD_GUARD
RESET_N
GPIO3
GPIO2
DVDD
1
2
3
4
5
6
7
8
24
23
LPF1
LPF0
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.
22 AVDD_SYNTH1
21 DCPL_VCO
20
19
18
17
LNA_N
LNA_P
TRX_SW
PA
CC1121
DCPL
SI
GND
GROUND PAD
SCLK
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.
SWRS111C – REVISED MARCH 2013
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