CC1121 High Performance Low Power RF Transceiver • Applications • • • • • • • • • 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) IEEE 802.15.4g systems Home and building automation Wireless alarm and security systems Industrial monitoring and control Wireless healthcare applications Wireless sensor networks and Active RFID • Regulations • • • Suitable for systems targeting compliance with: • Europe US Japan ETSI EN 300 220 ETSI EN 54-25 FCC CFR47 Part 15 FCC CFR47 Part 24 ARIB STD-T96 • Peripherals and Support Functions • Key Features • High performance single chip transceiver o Excellent receiver sensitivity: -120 dBm at 1.2 kbps -110 dBm at 50 kbps o Blocking performance: 86 dB at 10 MHz o Adjacent channel selectivity: 60 dB o Very low phase noise: -111 dBc/Hz at 10 kHz offset Power Supply o Wide supply voltage range (2.0 V – 3.6 V) o Low current consumption: - 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 - TX: 45 mA at +14 dBm 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 WaveMatch: Advanced digital signal processing for improved sync detect performance RoHS compliant 5x5mm QFN 32 package • • • • • • • • • Enhanced Wake-On-Radio functionality for automatic low-power receive polling Separate 128-byte RX and TX FIFOs Includes functions for antenna diversity support Support for re-transmissions Support for auto-acknowledge of received packets TCXO support and control, also in power modes Automatic Clear Channel Assessment (CCA) for listenbefore-talk (LBT) systems 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 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-OnRadio. 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 Page 1 of 22 CC1121 Table of Contents 1 ELECTRICAL SPECIFICATIONS ....................................................................................................3 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 ABSOLUTE MAX RATINGS ................................................................................................................3 GENERAL CHARACTERISTICS ............................................................................................................3 RF CHARACTERISTICS ......................................................................................................................3 REGULATORY STANDARDS ...............................................................................................................4 CURRENT CONSUMPTION, STATIC MODES ........................................................................................5 CURRENT CONSUMPTION, TRANSMIT MODES ...................................................................................5 CURRENT CONSUMPTION, RECEIVE MODES......................................................................................6 RECEIVE PARAMETERS .....................................................................................................................6 TRANSMIT PARAMETERS...................................................................................................................9 PLL PARAMETERS ............................................................................................................................9 WAKE-UP AND TIMING .....................................................................................................................9 32 MHZ CRYSTAL OSCILLATOR........................................................................................................9 32 MHZ CLOCK INPUT (TCXO)........................................................................................................9 32 KHZ CLOCK INPUT .......................................................................................................................9 32 KHZ RC OSCILLATOR ..................................................................................................................9 I/O AND RESET..................................................................................................................................9 2 TYPICAL PERFORMANCE CURVES ..............................................................................................9 3 PIN CONFIGURATION .......................................................................................................................9 4 BLOCK DIAGRAM ..............................................................................................................................9 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 FREQUENCY SYNTHESIZER ...............................................................................................................9 RECEIVER .........................................................................................................................................9 TRANSMITTER ...................................................................................................................................9 RADIO CONTROL AND USER INTERFACE ...........................................................................................9 ENHANCED WAKE-ON-RADIO (EWOR) ...........................................................................................9 SNIFF MODE......................................................................................................................................9 ANTENNA DIVERSITY .......................................................................................................................9 LOW POWER / HIGH PERFORMANCE MODE .......................................................................................9 5 TYPICAL APPLICATION CIRCUIT.................................................................................................9 6 HISTORY ...............................................................................................................................................9 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 Page 2 of 22 CC1121 1 Electrical Specifications All measurements performed on CC1120EM_868_915 rev.1.0.1, CC1120EM_955 rev.1.2.1, CC1120EM_420_470 rev.1.0.1 or CC1120EM_169 rev.1.2 1.1 Absolute Max Ratings Parameter Min Typ Max Unit Condition Supply Voltage -0.3 3.9 V Storage Temperature Range -40 125 °C ESD 2000 V HBM ESD 500 V CDM Input RF level +10 dBm Voltage on Any Digital Pin -0.3 3.9 V Voltage on Analog Pins (including “DCPL” pins) -0.3 2.0 V 1.2 General Characteristics Parameter Min Typ Max Unit Voltage Supply Range 2.0 3.6 V Temperature Range -40 85 °C 1.3 Condition RF Characteristics Parameter Min Typ Max Unit 820 960 MHz 410 480 MHz 274 320 MHz 164 192 MHz Frequency Bands Frequency Resolution Condition Please see application note AN115 “Using the CC112x/CC1175 at 274 to 320 MHz” for more information 30 Hz In 820-960 MHz band 15 Hz In 410-480 MHz band 6 Hz In 164-192 MHz band 200 kbps Packet mode 100 kbps Transparent mode 0 Datarate 0 Datarate Step Size 1e-4 bps 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 Page 3 of 22 CC1121 1.4 Regulatory Standards Performance Mode Frequency Band Suitable for compliance with Comments ARIB T-96 ETSI EN 300 220 receiver category 2 820 – 960 MHz ETSI EN 54-25 FCC PART 24 SUBMASK D Performance also suitable for systems targeting maximum allowed output power in the respective bands, using a range extender such as the CC1190 FCC PART 15.247 High Performance Mode FCC PART 15.249 410 – 480 MHz ETSI EN 300 220 receiver category 2 Performance also suitable for systems targeting maximum allowed output power in the respective bands, using a range extender 164 – 192 MHz ETSI EN 300 220 receiver category 2 Performance also suitable for systems targeting maximum allowed output power in the respective bands, using a range extender ETSI EN 300 220 820 – 960 MHz FCC PART 15.247 FCC PART 15.249 Low Power Mode 410 – 480 MHz ETSI EN 300 220 164 – 192 MHz ETSI EN 300 220 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 Page 4 of 22 CC1121 1.5 Current Consumption, Static Modes TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ 0.3 Max 1 Unit Condition µA Power Down with Retention 0.5 µA Low-power RC oscillator running XOFF Mode 170 µA Crystal oscillator / TCXO disabled IDLE Mode 1.3 mA Clock running, system waiting with no radio activity Unit Condition 1.6 Current Consumption, Transmit Modes 950 MHz band (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Max TX Current Consumption +10 dBm 37 mA TX Current Consumption 0 dBm 26 mA 868/915 MHz bands (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Max Unit TX Current Consumption +14 dBm 45 mA TX Current Consumption +10 dBm 34 mA Condition 434 MHz band (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Max Unit TX Current Consumption +15 dBm 50 mA TX Current Consumption +14 dBm 45 mA TX Current Consumption +10 dBm 34 mA Condition 170 MHz band (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Max Unit TX Current Consumption +15 dBm 54 mA TX Current Consumption +14 dBm 49 mA TX Current Consumption +10 dBm 41 mA Condition Low Power Mode TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min TX Current Consumption +10 dBm Typ 32 Max Unit Condition mA 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 Page 5 of 22 CC1121 1.7 Current Consumption, Receive Modes High Performance Mode TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Typ Max Unit RX Wait for Sync 1.2 kbps, 4 Byte Preamble Condition Using RX Sniff Mode, where the receiver wakes up at regular intervals to look for an incoming packet 2 mA 433, 868/915 and 950 MHz bands 22 mA 170 MHz band 23 mA 15 uA 50 kbps, 5 byte preamble, 32 kHz RC oscillator used as sleep timer Unit Condition mA Peak current consumption during packet reception at the sensitivity threshold Unit Condition RX Peak Current Peak current consumption during packet reception at the sensitivity threshold Average Current Consumption Check for Data Packet Every 1 Second Using Wake on Radio Low Power Mode TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Typ Max RX Peak Current Low power RX mode 1.2 kbps 1.8 17 Receive Parameters 1 General Receive Parameters (High Performance Mode) TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Saturation Typ Max +10 Digital Channel Filter Programmable Bandwidth 41.7 dBm 200 kHz IIP3, Normal Mode -14 dBm At maximum gain IIP3, High Linearity Mode -8 dBm Using 6 dB gain reduction in front end ±12 % With carrier sense detection enabled and assuming 4 byte preamble ±0.2 % -56 dBm < -57 dBm Datarate Offset Tolerance Spurious Emissions 1 - 13 GHz (VCO leakage at 3.5 GHz) 30 MHz to 1 GHz 1 With carrier sense detection disabled Radiated emissions measured according to ETSI EN 300 220, fc = 869.5 MHz All RX measurements made at the antenna connector, to a bit error rate limit of 1% 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 Page 6 of 22 CC1121 RX performance in 950 MHz band (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Max Unit Condition -114 dBm 1.2 kbps, DEV=20 kHz CHF=50 kHz2 -107 dBm 50 kbps 2GFSK, DEV=25 kHz, CHF=100 kHz -100 dBm 200 kbps, DEV=83 kHz (outer symbols), CHF=200 kHz, 4GFSK3 47 dB ± 50 kHz (adjacent channel) Blocking and Selectivity 48 dB + 100 kHz (alternate channel) 1.2 kbps 2FSK, 50 kHz channel separation, 20 kHz deviation, 50 kHz channel filter 69 dB ± 1 MHz 71 dB ± 2 MHz 78 dB ± 10 MHz Blocking and Selectivity 43 dB ± 200 kHz (adjacent channel) 50 kbps 2GFSK, 200 kHz channel separation, 25 kHz deviation, 100 kHz channel filter 51 dB ± 400 kHz (alternate channel) 62 dB ± 1 MHz (Same modulation format as 802.15.4g Mandatory Mode) 65 dB ± 2 MHz 71 dB ± 10 MHz 37 dB ± 200 kHz (adjacent channel) Blocking and Selectivity 44 dB ± 400 kHz (alternate channel) 200 kbps 4GFSK, 83 kHz deviation (outer symbols), 200 kHz channel filter, zero IF 55 dB ± 1 MHz 58 dB ± 2 MHz 64 dB ± 10 MHz Sensitivity Note: Sensitivity can be improved if the TX and RX matching networks are separated. 2 DEV is short for deviation, CHF is short for Channel Filter Bandwidth 3 BT=0.5 is used in all GFSK measurements 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 Page 7 of 22 CC1121 RX performance in 868/915 MHz bands (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Unit Condition -120 dBm 1.2 kbps, DEV=10 kHz CHF=41.7 kHz, using increased RX filtering -117 dBm 1.2 kbps, DEV=20 kHz CHF=50 kHz -114 dBm 4.8 kbps OOK -110 dBm 38.4 kbps, DEV=50 kHz CHF=100 kHz -110 dBm 50 kbps 2GFSK, DEV=25 kHz, CHF=100 kHz -103 dBm 200 kbps, DEV=83 kHz (outer symbols), CHF=200 kHz, 4GFSK 48 dB ± 50 kHz (adjacent channel) Blocking and Selectivity 48 dB + 100 kHz (alternate channel) 1.2 kbps 2FSK, 50 kHz channel separation, 20 kHz deviation, 50 kHz channel filter 69 dB ± 1 MHz 74 dB ± 2 MHz 81 dB ± 10 MHz Sensitivity Typ Max 42 dB + 100 kHz (adjacent channel) Blocking and Selectivity 43 dB ± 200 kHz (alternate channel) 38.4 kbps 2GFSK, 100 kHz channel separation, 20 kHz deviation, 100 kHz channel filter 62 dB ± 1 MHz 66 dB ± 2 MHz 74 dB ± 10 MHz Blocking and Selectivity 43 dB ± 200 kHz (adjacent channel) 50 kbps 2GFSK, 200 kHz channel separation, 25 kHz deviation, 100 kHz channel filter 50 dB ± 400 kHz (alternate channel) 61 dB ± 1 MHz (Same modulation format as 802.15.4g Mandatory Mode) 65 dB ± 2 MHz 74 dB ± 10 MHz 36 dB ± 200 kHz (adjacent channel) Blocking and Selectivity 44 dB ± 400 kHz (alternate channel) 200 kbps 4GFSK, 83 kHz deviation (outer symbols), 200 kHz channel filter, zero IF 55 dB ± 1 MHz 59 dB ± 2 MHz 67 dB ± 10 MHz 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 Page 8 of 22 CC1121 RX performance in 434 MHz band (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Max Unit Condition -109 dBm 50 kbps 2GFSK, DEV=25 kHz, CHF=100 kHz -116 dBm 1.2 kbps, DEV=20 kHz CHF=50 kHz 54 dB ± 50 kHz (adjacent channel) Blocking and Selectivity 54 dB + 100 kHz (alternate channel) 1.2 kbps 2FSK, 50 kHz channel separation, 20 kHz deviation, 50 kHz channel filter 74 dB ± 1 MHz 78 dB ± 2 MHz 86 dB ± 10 MHz Sensitivity 47 dB + 100 kHz (adjacent channel) Blocking and Selectivity 50 dB ± 200 kHz (alternate channel) 38.4 kbps 2GFSK, 100 kHz channel separation, 20 kHz deviation, 100 kHz channel filter 67 dB ± 1 MHz 71 dB ± 2 MHz 78 dB ± 10 MHz RX performance in 170 MHz band (High Performance Mode) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Unit Condition dbm 1.2 kbps, DEV=20 kHz CHF=50 kHz 60 dB ± 50 kHz (adjacent channel) Blocking and Selectivity 60 dB + 100 kHz (alternate channel) 1.2 kbps 2FSK, 50 kHz channel separation, 20 kHz deviation, 50 kHz channel filter 76 dB ± 1 MHz 77 dB ± 2 MHz 83 dB ± 10 MHz Sensitivity Typ -117 Max 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 Page 9 of 22 CC1121 RX performance in Low Power Mode TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Typ Max Unit Condition -99 dBm 38.4 kbps, DEV=50 kHz CHF=100 kHz -99 dBm 50 kbps 2GFSK, DEV=25 kHz, CHF=100 kHz Sensitivity 43 dB ± 50 kHz (adjacent channel) Blocking and Selectivity 45 dB + 100 kHz (alternate channel) 1.2 kbps 2FSK, 50 kHz channel separation, 20 kHz deviation, 50 kHz channel filter 71 dB ± 1 MHz 74 dB ± 2 MHz 75 dB ± 10 MHz 37 dB + 100 kHz (adjacent channel) 43 dB + 200 kHz (alternate channel) 58 dB ± 1 MHz 62 dB ± 2 MHz 64 dB + 10 MHz Blocking and Selectivity 43 dB + 200 kHz (adjacent channel) 50 kbps 2GFSK, 200 kHz channel separation, 25 kHz deviation, 100 kHz channel filter 52 dB + 400 kHz (alternate channel) 60 dB ± 1 MHz (Same modulation format as 802.15.4g Mandatory Mode) 64 dB ± 2 MHz 65 dB ± 10 MHz Saturation +10 dBm Blocking and Selectivity 38.4 kbps 2GFSK, 100 kHz channel separation, 20 kHz deviation, 100 kHz channel filter 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 Page 10 of 22 CC1121 1.9 Transmit Parameters TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Max Output Power Min Typ Max Unit Condition +12 At 950 MHz +14 At 915 MHz +15 At 915 MHz with VDD = 3.6 V +15 At 868 MHz +16 At 868 MHz with VDD = 3.6 V +15 At 433 MHz +16 At 433 MHz with VDD = 3.6 V +15 At 170 MHz +16 At 170 MHz with VDD = 3.6 V -11 dBm Within fine step size range -40 dBm Within coarse step size range 0.4 dB Within fine step size range -75 dBc 4-GFSK 9.6 kbps in 12.5 kHz channel, measured in 100 Hz bandwidth at 434 MHz (FCC Part 90 Mask D compliant) -58 dBc 4-GFSK 9.6 kbps in 12.5 kHz channel, measured in 8.75 kHz bandwidth (ETSI 300 220 compliant) -61 dBc 2-GFSK 2.4 kbps in 12.5 kHz channel, 1.2 kHz deviation < -60 dBm Min Output Power Output Power Step Size Adjacent Channel Power Spurious Emissions (Not including harmonics) Harmonics 2nd Harm, 170 MHz 3rd Harm, 170 MHz 2nd Harm, 433 MHz 3rd Harm, 433 MHz 2nd Harm, 450 MHz 3rd Harm, 450 MHz 2nd Harm, 868 MHz 3rd Harm, 868 MHz 2nd Harm, 915 MHz 3rd Harm, 915 MHz 4th Harm, 915 MHz 2nd Harm, 950 MHz 3rd Harm, 950 MHz -39 -58 -56 -51 -60 -45 -40 -42 56 52 60 -58 -42 dBm dBm dBm dBm dBm dBm dBm dBm dBuV/m dBuV/m dBuV/m dBm dBm Transmission at +14 dBm (or maximum allowed in applicable band where this is less than +14dBm) using TI reference design Radiated emissions measured according to ARIB T-96 in 950 MHz band, ETSI EN 300-220 in 170, 433 and 868 MHz bands and FCC part 15.247 in 450 and 915 MHz band Fourth harmonic in 915 MHz band will require extra filtering to meet FCC requirements if transmitting in long intervals (>50 ms periods) 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 Page 11 of 22 CC1121 1.10 PLL Parameters High Performance Mode TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Phase Noise in 950 MHz Band Phase Noise in 868/915 MHz Bands Phase Noise in 433 MHz Band Phase Noise in 170 MHz Band Typ Max Unit Condition -99 dBc/Hz ± 10 kHz offset -99 dBc/Hz ± 100 kHz offset -123 dBc/Hz ± 1 MHz offset -99 dBc/Hz ± 10 kHz offset -100 dBc/Hz ± 100 kHz offset -122 dBc/Hz ± 1 MHz offset -106 dBc/Hz ± 10 kHz offset -107 dBc/Hz ± 100 kHz offset -127 dBc/Hz ± 1 MHz offset -111 dBc/Hz ± 10 kHz offset -116 dBc/Hz ± 100 kHz offset -135 dBc/Hz ± 1 MHz offset Unit Condition -90 dBc/Hz ± 10 kHz offset -92 dBc/Hz ± 100 kHz offset -124 dBc/Hz ± 1 MHz offset -95 dBc/Hz ± 10 kHz offset -95 dBc/Hz ± 100 kHz offset -124 dBc/Hz ± 1 MHz offset -98 dBc/Hz ± 10 kHz offset -102 dBc/Hz ± 100 kHz offset -129 dBc/Hz ± 1 MHz offset -106 dBc/Hz ± 10 kHz offset -110 dBc/Hz ± 100 kHz offset -136 dBc/Hz ± 1 MHz offset Low Power Mode TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Phase Noise in 950 MHz Band Phase Noise in 868/915 MHz Bands Phase Noise in 433 MHz Band Phase Noise in 170 MHz Band Typ Max 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 Page 12 of 22 CC1121 1.11 Wake-up and Timing TA = 25°C, VDD = 3.0 V, f c = 869.5 MHz if nothing else stated Parameter Min Powerdown to IDLE Typ Max Unit Condition 0.4 ms Depends on crystal 166 µs Calibration disabled 461 µs Calibration enabled 50 µs 296 µs Calibrate when leaving RX/TX enabled 0 µs Calibrate when leaving RX/TX disabled 0.4 ms When using SCAL strobe 0.5 bytes Required for RF front end gain settling only. Digital demodulation does not require preamble for settling 0.3 ms 200 kHz channels Unit Condition MHz Note: It is recommended that the crystal frequency is chosen so that the RF channel(s) are >1 MHz away from multiples of XOSC in TX and XOSC/2 in RX IDLE to RX/TX RX/TX Turnaround RX/TX to IDLE time Frequency Synthesizer Calibration Minimum Required Number of Preamble Bytes Time From Start RX Until Valid RSSI Including gain settling (function of channel bandwidth. Programmable for trade-off between speed and accuracy) 1.12 32 MHz Crystal Oscillator TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Crystal Frequency Typ 32 Load Capacitance (CL) Max 33.6 10 ESR pF Ω Simulated over operating conditions ms Depends on crystal Max Unit Condition 60 Start-up Time 0.4 1.13 32 MHz Clock Input (TCXO) TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Clock Frequency 32 33.6 MHz Clock input amplitude (peak-to-peak) 0.8 VDD V Simulated over operating conditions 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 Page 13 of 22 CC1121 1.14 32 kHz Clock Input TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Typ Clock Frequency Max Unit 32 32 kHz Clock Input Pin Input High Voltage Condition kHz 0.8×VDD V 32 kHz Clock Input Pin Input Low Voltage 0.2×VDD V 1.15 32 kHz RC Oscillator TA = 25°C, VDD = 3.0 V if nothing else stated. Parameter Min Frequency Typ Max 32 Unit Condition kHz After Calibration Relative to frequency reference (i.e. 32 MHz crystal or TCXO) Frequency Accuracy After Calibration ±0.1 % Initial Calibration Time 1.6 ms 1.16 I/O and Reset TA = 25°C, VDD = 3.0 V if nothing else stated Parameter Min Logic Input High Voltage 0.8×VDD Typ Max Condition V Logic Input Low Voltage 0.2×VDD Logic Output High Voltage Unit 0.8×VDD V V At 4 mA output load or less Logic Output Low Voltage 0.2×VDD Power-on Reset Threshold 1.3 V V Voltage on DVDD pin 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 Page 14 of 22 CC1121 2 Typical Performance Curves TA = 25°C, VDD = 3.0 V if nothing else stated Output Power vs Temperature Max Setting, 170 MHz, 3.6V TX Current at 868MHz vs PA power setting 60 17 O utput Pow er (dBm ) 40 30 20 10 16.5 16 15.5 -40 43 47 4B 53 4F 57 5B 63 5F 67 6B 73 6F 77 15 7B 7F 0 0 PA power setting Output Power vs Voltage Max Setting, 170 MHz 80 Output Power at 868MHz vs PA power setting 18 20 16 10 O utput Power (dBm ) 14 12 10 8 0 -10 -20 -30 -40 6 Supply Voltage (V) PA power setting 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 Page 15 of 22 43 47 4B 53 4F 57 5B 63 5F 3.5 6B 3 73 6F 2.5 77 -50 2 7F 7B O utp ut P ow er (d Bm ) 40 Temperature (ºC) 67 TX Current (m A) 50 CC1121 GPIO Output High Voltage vs Current Being Sourced GPIO Output Low Voltage vs Current Being Sinked GPIO Output Low Voltage (mV) GPIO Output high Voltage (V) 3.1 2.9 2.7 2.5 2.3 2.1 1.9 1.7 1.5 0 5 10 15 20 25 30 35 1400 1200 1000 800 600 400 200 0 0 5 10 15 20 25 Current (mA) Current (mA) 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 Page 16 of 22 30 35 CC1121 3 Pin Configuration The CC1121 pin-out is shown in the table below. Pin # Pin name Type / direction Description 1 VDD_GUARD Power 2.0 - 3.6 V VDD 2 RESET_N Digital Input Asynchronous, active-low digital reset 3 GPIO3 Digital Input/Output General purpose IO 4 GPIO2 Digital Input/Output General purpose IO 5 DVDD Power 2.0 - 3.6 V VDD to internal digital regulator 6 DCPL Power Digital regulator output to external C 7 SI Digital Input Serial data in 8 SCLK Digital Input Serial data clock 9 SO(GPIO1) Digital Input/Output Serial data out (General purpose IO) 10 GPIO0 Digital Input/Output General purpose IO 11 CS_N Digital Input Active-low chip-select 12 DVDD Power 2.0 - 3.6 V VDD 13 AVDD_IF Power 2.0 - 3.6 V VDD 14 RBIAS Analog External high precision R 15 AVDD_RF Power 2.0 - 3.6 V VDD 16 NC 17 PA Analog Single-ended TX output 18 TRX_SW Analog TX/RX switch 19 LNA_P Analog Differential RX input 20 LNA_N Analog Differential RX input 21 DCPL_VCO Power Pin for external decoupling of VCO supply regulator 22 AVDD_SYNTH1 Power 2.0 - 3.6 V VDD 23 LPF0 Analog External loopfilter components 24 LPF1 25 AVDD_PFD_CHP Power 2.0 - 3.6 V VDD 26 DCPL_PFD_CHP Power Pin for external decoupling of PFD and CHP regulator 27 AVDD_SYNTH2 Power 2.0 - 3.6 V VDD 28 AVDD_XOSC Power 2.0 - 3.6 V VDD 29 DCPL_XOSC Power Pin for external decoupling of XOSC supply regulator 30 XOSC_Q1 Analog Crystal oscillator pin 1 (must be grounded if a TCXO or other external clock connected to EXT_XOSC is used) 31 XOSC_Q2 Analog Crystal oscillator pin 2 (must be left floating if a TCXO or other external clock connected to EXT_XOSC is used) 32 EXT_XOSC Digital Input Pin for external XOSC input (must be grounded if a regular XOSC connected to XOSC_Q1 and XOSC_Q2 is used) - GND Ground Pad The ground pad must be connected to a solid ground plane Not connected External loopfilter 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 Page 17 of 22 CC1121 4 Block Diagram Cordic Channel filter Modulator A system block diagram of CC1121 is shown Figure 4.1. Figure 4.1 : System Block Diagram 4.1 Frequency Synthesizer At the heart of CC1121 there is a fully integrated, fractional-N, ultra high performance frequency synthesizer. The frequency synthesizer is designed for excellent phase noise performance, providing very high selectivity and blocking performance. The system is designed to comply with the most stringent regulatory spectral masks at maximum transmit power. Either a crystal can be connected to XOSC_Q1 and XOSC_Q2, or a TCXO can be connected to the EXT_XOSC input. The oscillator generates the reference frequency for the synthesizer, as well as clocks for the ADC and the digital part. To reduce system cost, CC1121 has high accuracy frequency estimation and compensation registers to measure and compensate for crystal inaccuracies, enabling the use of lower cost crystals. If a TCXO is used, the CC1121 will automatically turn the TCXO on and off when needed to support low power modes and Wake-OnRadio operation. 4.2 Receiver CC1121 features a highly flexible receiver. The received RF signal is amplified by the low-noise amplifier (LNA) and down-converted in quadrature (I and Q) to the intermediate frequency (IF). At IF, the I/Q signals are digitized by the high dynamic range ADCs. An advanced Automatic Gain Control (AGC) unit adjusts the front end gain, and enables the CC1121 to receive both strong and weak signals, even in the presence of strong interferers. High attenuation channel and data filtering enable reception with strong neighbor channel interferers. The I/Q signal is converted to a phase / magnitude signal to support both FSK and OOK modulation schemes. 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 Page 18 of 22 CC1121 A sophisticated pattern recognition algorithm locks onto the synchronization word without need for preamble settling bytes. Receiver settling time is therefore reduced to the settling time of the AGC, typically 4 bits. The advanced pattern recognition also greatly reduces the problem of false sync triggering on noise, further reducing power consumption and improving sensitivity and reliability. The pattern recognition logic can also be used as a high performance preamble detector to reliably detect a valid preamble in the channel. A novel I/Q compensation algorithm removes any problem of I/Q mismatch and hence avoids time consuming and costly I/Q / image calibration steps in production or in the field. 4.3 Transmitter The CC1121 transmitter is based on direct synthesis of the RF frequency (in-loop modulation). To achieve effective spectrum usage, CC1121 has extensive data filtering and shaping in TX to support high throughput data communication in narrowband channels. The modulator also controls power ramping to remove issues such as spectral splattering when driving external high power RF amplifiers. 4.4 Radio Control and User Interface The CC1121 digital control system is built around MARC (Main Radio Control) implemented using an internal high performance 16 bit ultra low power processor. MARC handles power modes, radio sequencing and protocol timing. A 4-wire SPI serial interface is used for configuration and data buffer access. The digital baseband includes support for channel configuration, packet handling, and data buffering. The host MCU can stay in power down until a valid RF packet has been received, and then burst read the data, greatly reducing the power consumption and computing power required from the host MCU. The CC1121 radio control and user interface is based on the widely used CC1101 transceiver to enable easy SW transition between the two platforms. The command strobes and the main radio states are the same for the two platforms. For legacy formats CC1121 also has support for two serial modes. In synchronous serial mode CC1121 performs bit synchronization and provides the MCU with a bit clock with associated data. In transparent mode CC1121 outputs the digital baseband signal using a digital interpolation filter to eliminate jitter introduced by digital filtering and demodulation. 4.5 Enhanced Wake-On-Radio (eWOR) eWOR, using a flexible integrated sleep timer, enables automatic receiver polling with no intervention from the MCU. The CC1121 will enter RX, listen and return to sleep if a valid RF packet is not received. The sleep interval and duty cycle can be configured to make a trade-off between network latency and power consumption. Incoming messages are time-stamped to simplify timer re-synchronization. The eWOR timer runs off an ultra low power 32 kHz RC oscillator. To improve timing accuracy, the RC oscillator can be automatically calibrated to the RF crystal in configurable intervals. 4.6 Sniff Mode The CC1121 supports very quick start up times, and requires very few preamble bits. Sniff Mode uses this to dramatically reduce the current consumption while the receiver is waiting for data. Since the CC1121 is able to wake up and settle much faster than the length of most preambles, it is not required to be in RX continuously while waiting for a packet to arrive. Instead, the enhanced wake-on-radio feature can be used to put the device into sleep periodically. By setting an appropriate sleep time, the CC1121 will be able to wake up and receive the packet when it arrives with no performance loss. This removes the need for accurate timing synchronization between 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 Page 19 of 22 CC1121 transmitter and receiver, and allows the user to trade off current consumption between the transmitter and receiver. 4.7 Antenna Diversity Antenna diversity can increase performance in a multi-path environment. An external antenna switch is required. The switch can be automatically controlled by CC1121 using one of the GPIO pins (also support for differential output control signal typically used in RF switches). If antenna diversity is enabled, the GPIO will alternate between states until a valid RF input signal is detected. An optional acknowledge packet can be transmitted without changing GPIO state. An incoming RF signal can be validated by received signal strength, by using the automatic preamble detector, or a combination of the two. Using the preamble detector will make a more robust system and avoid the need to set a defined signal strength threshold, as this threshold will set the sensitivity limit of the system. 4.8 Low Power / High Performance Mode The CC1121 is highly configurable, enabling trade-offs between power and performance to be made based on the needs of the application. This data sheet describes two modes - low power mode and high performance mode - which represent configurations where the device is optimized for either power or performance. 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 Page 20 of 22 CC1121 5 Typical Application Circuit Very few external components are required for the operation of CC1121. A typical application circuit is shown below. Note that it does not show how the board layout should be done, which will greatly influence the RF performance of CC1121. This section is meant as an introduction only. Note that decoupling capacitors for power pins are not shown in the figure below. Optional vdd 25 AVDD_PFD_CHP vdd DCPL_PFD_CHP 26 vdd AVDD_SYNTH2 27 29 DCPL_XOSC 1 VDD_GUARD AVDD_XOSC 28 LPF1 24 2 RESET_N vdd LPF0 23 3 GPIO3 AVDD_SYNTH1 22 4 GPIO2 DCPL_VCO 21 CC1121 5 DVDD vdd LNA_N 20 6 DCPL LNA_P 7 SI 19 TRX_SW 18 N.C. 16 15 AVDD_RF vdd 14 RBIAS 13 AVDD_IF vdd DVDD vdd 12 11 CS_N 9 SO (GPIO1) PA 17 10 GPIO0 8 SCLK vdd vdd XOSC_Q1 30 EXT_XOSC 32 (optional control pin from CC1121) XOSC_Q2 31 32 MHz crystal XOSC/ TCXO MCU connection SPI interface and optional gpio pins Figure 5.1 : Typical application circuit 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 Page 21 of 22 CC1121 6 History Revision Date Description / Changes SWRS111B April 2012 Added improved 1.2kbps sensitivity Fixed min RX bandwidth from 40kHz to 41.7kHz Added ground pad on page 1 pin-out and pin description Added TCXO clock input voltage requirement Changed all pin names in pin description and figures to UPPERCASE Changed "PA OUT" to "PA" in block diagram Corrected deviation on 38.4kbps case from 50kHz to 20kHz Corrected error in EM list: CC1120EM_420_970 is corrected to CC1120EM_420_470 Added 274 - 320 MHz band and pointed to app note for more info (added mention of 315 MHz band on front page) Updated sniff mode current to 2 mA Added "WaveMatch:" in front of "Advanced digital signal processing ..." on front page Data rate offset tolerance: specified that 4 byte preamble only applies to 12% offset Removed solder reflow temperature under absolute max ratings Moved crystal ESR to ‘max’ column Added History section SWRS111A Dec. 2011 Initial release 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 Page 22 of 22 PACKAGE OPTION ADDENDUM www.ti.com 24-May-2012 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) CC1121RHMR ACTIVE QFN RHM 32 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR CC1121RHMT ACTIVE QFN RHM 32 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR Samples (Requires Login) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 24-May-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant CC1121RHMR QFN RHM 32 3000 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 CC1121RHMT QFN RHM 32 250 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 24-May-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) CC1121RHMR QFN RHM 32 3000 338.1 338.1 20.6 CC1121RHMT QFN RHM 32 250 338.1 338.1 20.6 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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