The CC1120 device 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, thus removing the need for costly external SAW and IF filters. The device is mainly intended for Industrial, Scientific, and Medical (ISM) applications and Short Range Device (SRD) frequency bands at
164 to 192 MHz, 274 to 320 MHz, 410 to 480 MHz, and 820 to 960 MHz.
The CC1120 device provides extensive hardware support for packet handling, data buffering, burst transmissions, clear channel assessment, link quality indication, and wake-on-radio. The main operating parameters of the CC1120 device can be controlled through an SPI interface. In a typical system, the CC1120 device is used with a microcontroller and only a few external passive components.
Figure 1-1 shows the system block diagram of the CC1120 device.
Changes from G Revision (September 2014) to H Revision
Changes from F Revision (July 2014) to G Revision
Figure 3-1 shows pin names and locations for the CC1120 device.
The following table lists the pinout configuration for the CC1120 device.
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | VDD_GUARD | Power | 2.0–3.6 V VDD |
2 | RESET_N | Digital input | Asynchronous, active-low digital reset |
3 | GPIO3 | Digital I/O | General-purpose I/O |
4 | GPIO2 | Digital I/O | General-purpose I/O |
5 | DVDD | Power | 2.0–3.6 VDD to internal digital regulator |
6 | DCPL | Power | Digital regulator output to external decoupling capacitor |
7 | SI | Digital input | Serial data in |
8 | SCLK | Digital input | Serial data clock |
9 | SO(GPIO1) | Digital I/O | Serial data out (general-purpose I/O) |
10 | GPIO0 | Digital I/O | General-purpose I/O |
11 | CSn | 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 resistor |
15 | AVDD_RF | Power | 2.0–3.6 V VDD |
16 | N.C. | — | Not connected |
17 | PA | Analog | Single-ended TX output (requires DC path to VDD) |
18 | TRX_SW | Analog | TX and RX switch. Connected internally to GND in TX and floating (high-impedance) in RX. |
19 | LNA_P | Analog | Differential RX input (requires DC path to ground) |
20 | LNA_N | Analog | Differential RX input (requires DC path to ground) |
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 loop filter components |
24 | LPF1 | Analog | External loop filter components |
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 clock input (must be grounded if a regular crystal connected to XOSC_Q1 and XOSC_Q2 is used) |
— | GND | Ground pad | The ground pad must be connected to a solid ground plane. |
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.
VALUE | UNIT | ||||
---|---|---|---|---|---|
VESD | Electrostatic discharge (ESD) performance | Human body model (HBM), per ANSI/ESDA/JEDEC JS001(1) | ±2 | kV | |
Charged device model (CDM), per JESD22-C101(2) | All pins | ±500 | V |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
Voltage supply range | All supply pins must have the same voltage | 2.0 | 3.6 | V | ||
Voltage on digital inputs | 0 | VDD | V | |||
Ambient temperature range | –40 | 85 | °C |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
Frequency bands | 820 | 960 | MHz | ||
410 | 480 | ||||
See SWRA398, Using the CC112x/CC1175 at 274 to 320 MHz, for more information | (273.3) | (320) | |||
164 | 192 | ||||
Contact TI for more information about the use of these frequency bands | (205) | (240) | |||
(136.7) | (160) | ||||
Frequency resolution | In 820–950 MHz band | 30 | Hz | ||
In 410–480 MHz band | 15 | ||||
In 164–192 MHz band | 6 | ||||
Data rate | Packet mode | 0 | 200 | kbps | |
Transparent mode | 0 | 100 | |||
Data rate step size | 1e-4 | bps |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
CURRENT CONSUMPTION: STATIC MODES | ||||||
Power down with retention | 0.12 | 1 | µA | |||
Low-power RC oscillator running | 0.5 | |||||
XOFF mode | Crystal oscillator / TCXO disabled | 170 | µA | |||
IDLE mode | Clock running, system waiting with no radio activity | 1.3 | mA | |||
CURRENT CONSUMPTION, TRANSMIT MODES | ||||||
TX current consumption +10 dBm | 950-MHz band (high-performance mode) | 37 | mA | |||
TX current consumption 0 dBm | 26 | mA | ||||
TX current consumption +14 dBm | 868-, 915-, and 920-MHz bands (high-performance mode) | 45 | mA | |||
TX current consumption +10 dBm | 34 | mA | ||||
TX current consumption +15 dBm | 434-MHz band (high-performance mode) | 50 | mA | |||
TX current consumption +14 dBm | 45 | mA | ||||
TX current consumption +10 dBm | 34 | mA | ||||
TX current consumption +15 dBm | 169-MHz band (high-performance mode) | 54 | mA | |||
TX current consumption +14 dBm | 49 | mA | ||||
TX current consumption +10 dBm | 41 | mA | ||||
LOW-POWER MODE(1) | ||||||
TX current consumption +10 dBm | 32 | mA | ||||
CURRENT CONSUMPTION, RECEIVE MODE (HIGH-PERFORMANCE MODE)(1) | ||||||
RX wait for sync | 1.2 kbps, 4-byte preamble | Using RX sniff mode, where the receiver wakes up at regular intervals to look for an incoming packet(2) | 2 | mA | ||
38.4 kbps, 4-byte preamble | 13.4 | |||||
RX peak current | 433-, 868-, 915-, 920-, and 950–MHz bands | Peak current consumption during packet reception at the sensitivity threshold | 22 | mA | ||
169-MHz band | 23 | |||||
Average current consumption Check for data packet every 1 second using Wake on Radio |
50 kbps, 5-byte preamble, 40-kHz RC oscillator used as sleep timer | 15 | µA | |||
CURRENT CONSUMPTION, RECEIVE MODE (LOW-POWER MODE)(1) | ||||||
RX peak current Low-power RX mode |
1.2 kbps | Peak current consumption during packet reception at the sensitivity level | 17 | mA |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
GENERAL RECEIVE PARAMETERS (HIGH-PERFORMANCE MODE)(1) | ||||||
Saturation | +10 | dBm | ||||
Digital channel filter programmable bandwidth | 8 | 200 | kHz | |||
IIP3, normal mode | At maximum gain | –14 | dBm | |||
IIP3, high linearity mode | Using 6-dB gain reduction in front end | –8 | dBm | |||
Data rate offset tolerance | With carrier sense detection enabled and assuming 4-byte preamble |
±12% | ||||
With carrier sense detection disabled | ±0.2% | |||||
Spurious emissions | 1–13 GHz (VCO leakage at 3.5 GHz) | Radiated emissions measured according to ETSI EN 300 220, fc = 869.5 MHz |
–56 | dBm | ||
30 MHz to 1 GHz | < –57 | |||||
Optimum source impedance | 868-, 915-, and 920-MHz bands | (Differential or single-ended RX configurations) | 60 + j60 / 30 + j30 |
Ω | ||
433-MHz band | 100 + j60 / 50 + j30 |
|||||
169-MHz band | 140 + j40 / 70 + j20 |
|||||
RX PERFORMANCE IN 950-MHZ BAND (HIGH-PERFORMANCE MODE)(2) | ||||||
Sensitivity(3) | 1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4) | –120 | dBm | |||
1.2 kbps, DEV = 20 kHz CHF = 50 kHz(4) | –114 | |||||
50 kbps 2GFSK, DEV = 25 kHz, CHF = 100 kHz(4) |
–107 | |||||
200 kbps, DEV = 83 kHz (outer symbols), CHF = 200 kHz(4), 4GFSK(5) |
–100 | |||||
Blocking and Selectivity |
1.2 kbps 2FSK, 12.5-kHz channel separation, 4-kHz deviation, 10-kHz channel filter |
± 12.5 kHz (adjacent channel) | 51 | dB | ||
± 25 kHz (alternate channel) | 52 | |||||
± 1 MHz | 73 | |||||
± 2 MHz | 76 | |||||
± 10 MHz | 81 | |||||
1.2 kbps 2FSK, 50-kHz channel separation, 20-kHz deviation, 50-kHz channel filter |
± 50 kHz (adjacent channel) | 47 | ||||
+ 100 kHz (alternate channel) | 48 | |||||
± 1 MHz | 69 | |||||
± 2 MHz | 71 | |||||
± 10 MHz | 78 | |||||
50 kbps 2GFSK, 200-kHz channel separation, 25-kHz deviation, 100-kHz channel filter (Same modulation format as 802.15.4g Mandatory Mode) |
± 200 kHz (adjacent channel) | 43 | ||||
± 400 kHz (alternate channel) | 51 | |||||
± 1 MHz | 62 | |||||
± 2 MHz | 65 | |||||
± 10 MHz | 71 | |||||
200 kbps 4GFSK, 83-kHz deviation (outer symbols), 200-kHz channel filter, zero IF | ± 200 kHz (adjacent channel) | 37 | ||||
± 400 kHz (alternate channel) | 44 | |||||
± 1 MHz | 55 | |||||
± 2 MHz | 58 | |||||
± 10 MHz | 64 | |||||
RX PERFORMANCE IN 868-, 915-, AND 920-MHZ BANDS (HIGH-PERFORMANCE MODE)(2) | ||||||
Sensitivity | 300 bps with coding gain (using a PN spreading sequence with 4 chips per data bit) DEV = 4 kHz CHF = 10 kHz(4) |
–127 | dBm | |||
1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4) | –123 | |||||
1.2 kbps, DEV = 10 kHz CHF = 42 kHz(4) | –120 | |||||
1.2 kbps, DEV = 20 kHz CHF = 50 kHz(4) | –117 | |||||
4.8 kbps OOK | –114 | |||||
38.4 kbps, DEV = 20 kHz CHF = 100 kHz(4) | –110 | |||||
50 kbps 2GFSK, DEV = 25 kHz, CHF = 100 kHz(4) |
–110 | |||||
200 kbps, DEV = 83 kHz (outer symbols), CHF = 200 kHz(4), 4GFSK |
–103 | |||||
Blocking and Selectivity |
1.2-kbps 2-FSK, 12.5-kHz channel separation, 4-kHz deviation, 10-kHz channel filter |
± 12.5 kHz (adjacent channel) | 54 | dB | ||
± 25 kHz (alternate channel) | 54 | |||||
± 1 MHz | 75 | |||||
± 2 MHz | 79 | |||||
± 10 MHz | 87 | |||||
1.2-kbps 2-FSK, 12.5-kHz channel separation, using settings optimized for blocking performance (3-kHz deviation, 7.8-kHz channel filter, minimum loop bandwidth) |
± 1 kHz | 78 | ||||
± 2 kHz | 82 | |||||
± 8 MHz | 88 | |||||
± 10 MHz | 88 | |||||
1.2-kbps 2-FSK, 50-kHz channel separation, 20-kHz deviation, 50-kHz channel filter |
± 50 kHz (adjacent channel) | 48 | ||||
+ 100 kHz (alternate channel) | 48 | |||||
± 1 MHz | 69 | |||||
± 2 MHz | 74 | |||||
± 10 MHz | 81 | |||||
38.4-kbps 2-GFSK, 100-kHz channel separation, 20-kHz deviation, 100-kHz channel filter | + 100 kHz (adjacent channel) | 42 | ||||
± 200 kHz (alternate channel) | 43 | |||||
± 1 MHz | 62 | |||||
± 2 MHz | 66 | |||||
± 10 MHz | 74 | |||||
50-kbps 2-GFSK, 200-kHz channel separation, 25-kHz deviation, 100-kHz channel filter (Same modulation format as 802.15.4g Mandatory Mode) |
± 200 kHz (adjacent channel) | 43 | ||||
± 400 kHz (alternate channel) | 50 | |||||
± 1 MHz | 61 | |||||
± 2 MHz | 65 | |||||
± 10 MHz | 74 | |||||
200-kbps 4-GFSK, 83-kHz deviation (outer symbols), 200-kHz channel filter, zero IF | ± 200 kHz (adjacent channel) | 36 | ||||
± 400 kHz (alternate channel) | 44 | |||||
± 1 MHz | 55 | |||||
± 2 MHz | 59 | |||||
± 10 MHz | 67 | |||||
Image rejection (image compensation enabled) | 1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4), image at –125 kHz | 54 | dB | |||
RX PERFORMANCE IN 434-MHZ BAND (HIGH-PERFORMANCE MODE)(2) | ||||||
Sensitivity | 1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4) | –123 | dBm | |||
50 kbps 2GFSK, DEV = 25 kHz, CHF = 100 kHz |
–109 | |||||
1.2 kbps, DEV = 20 kHz CHF = 50 kHz(4) | –116 | |||||
Blocking and Selectivity |
1.2 kbps 2FSK, 12.5-kHz channel separation, 4-kHz deviation, 10-kHz channel filter |
± 12.5 kHz (adjacent channel) | 60 | dB | ||
± 25 kHz (alternate channel) | 60 | |||||
± 1 MHz | 79 | |||||
± 2 MHz | 82 | |||||
± 10 MHz | 91 | |||||
1.2 kbps 2FSK, 50-kHz channel separation, 20-kHz deviation, 50-kHz channel filter |
± 50 kHz (adjacent channel) | 54 | ||||
+ 100 kHz (alternate channel) | 54 | |||||
± 1 MHz | 74 | |||||
± 2 MHz | 78 | |||||
± 10 MHz | 86 | |||||
38.4 kbps 2GFSK, 100-kHz channel separation, 20-kHz deviation, 100-kHz channel filter |
+ 100 kHz (adjacent channel) | 47 | ||||
± 200 kHz (alternate channel) | 50 | |||||
± 1 MHz | 67 | |||||
± 2 MHz | 71 | |||||
± 10 MHz | 78 | |||||
RX PERFORMANCE IN 169-MHZ BAND (HIGH-PERFORMANCE MODE)(2) | ||||||
Sensitivity | 1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4) | –123 | dbm | |||
1.2 kbps, DEV = 20 kHz CHF = 50 kHz(4) | –117 | |||||
Blocking and Selectivity |
1.2 kbps 2FSK, 12.5-kHz channel separation, 4-kHz deviation, 10-kHz channel filter |
± 12.5 kHz (adjacent channel) | 64 | dB | ||
± 25 kHz (alternate channel) | 66 | |||||
± 1 MHz | 82 | |||||
± 2 MHz | 83 | |||||
± 10 MHz | 89 | |||||
1.2 kbps 2FSK, 50-kHz channel separation, 20-kHz deviation, 50-kHz channel filter |
± 50 kHz (adjacent channel) | 60 | ||||
+ 100 kHz (alternate channel) | 60 | |||||
± 1 MHz | 76 | |||||
± 2 MHz | 77 | |||||
± 10 MHz | 83 | |||||
Spurious response rejection | 1.2 kbps 2FSK, 12.5-kHz channel separation, 4-kHz deviation, 10-kHz channel filter |
70 | dB | |||
Image rejection (image compensation enabled) | 1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4), image at –125 kHz | 66 | dB | |||
RX PERFORMANCE IN LOW-POWER MODE(1) | ||||||
Sensitivity | 1.2 kbps, DEV = 4 kHz CHF = 10 kHz(4) | –111 | dBm | |||
38.4 kbps, DEV = 50 kHz CHF = 100 kHz(4) | –99 | |||||
50 kbps 2GFSK, DEV = 25 kHz, CHF = 100 kHz(4) |
–99 | |||||
Blocking and Selectivity |
1.2 kbps 2FSK, 12.5-kHz channel separation, 4-kHz deviation, 10-kHz channel filter |
± 12.5 kHz (adjacent channel) | 46 | dB | ||
± 25 kHz (alternate channel) | 46 | |||||
± 1 MHz | 73 | |||||
± 2 MHz | 78 | |||||
± 10 MHz | 79 | |||||
1.2 kbps 2FSK, 50-kHz channel separation, 20-kHz deviation, 50-kHz channel filter |
± 50 kHz (adjacent channel) | 43 | ||||
+ 100 kHz (alternate channel) | 45 | |||||
± 1 MHz | 71 | |||||
± 2 MHz | 74 | |||||
± 10 MHz | 75 | |||||
38.4 kbps 2GFSK, 100-kHz channel separation, 20-kHz deviation, 100-kHz channel filter | + 100 kHz (adjacent channel) | 37 | ||||
+ 200 kHz (alternate channel) | 43 | |||||
± 1 MHz | 58 | |||||
± 2 MHz | 62 | |||||
+ 10 MHz | 64 | |||||
50 kbps 2GFSK, 200-kHz channel separation, 25-kHz deviation, 100-kHz channel filter (Same modulation format as 802.15.4g Mandatory Mode) |
+ 200 kHz (adjacent channel) | 43 | ||||
+ 400 kHz (alternate channel) | 52 | |||||
± 1 MHz | 60 | |||||
± 2 MHz | 64 | |||||
± 10 MHz | 65 | |||||
Saturation | +10 | dBm |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
Maximum output power | At 950 MHz | +12 | dBm | |||
At 915- and 920-MHz | +14 | |||||
At 915- and 920-MHz with VDD = 3.6 V | +15 | |||||
At 868 MHz | +15 | |||||
At 868 MHz with VDD = 3.6 V | +16 | |||||
At 433 MHz | +15 | |||||
At 433 MHz with VDD = 3.6 V | +16 | |||||
At 169 MHz | +15 | |||||
At 169 MHz with VDD = 3.6 V | +16 | |||||
Minimum output power | Within fine step size range | –11 | dBm | |||
Within coarse step size range | –40 | |||||
Output power step size | Within fine step size range | 0.4 | dB | |||
Adjacent channel power | 4-GFSK 9.6 kbps in 12.5-kHz channel, measured in 100-Hz bandwidth at 434 MHz (FCC Part 90 Mask D compliant) |
–75 | dBc | |||
4-GFSK 9.6 kbps in 12.5-kHz channel, measured in 8.75-kHz bandwidth (ETSI EN 300 220 compliant) |
–58 | |||||
2-GFSK 2.4 kbps in 12.5-kHz channel, 1.2-kHz deviation | –61 | |||||
Spurious emissions (not including harmonics) |
<–60 | dBm | ||||
Harmonics | 2nd Harm, 169 MHz | Transmission at +14 dBm (or maximum allowed in applicable band where this is less than +14 dBm) using TI reference design 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 for long intervals (>50-ms periods) |
–39 | dBm | ||
3rd Harm, 169 MHz | –58 | |||||
2nd Harm, 433 MHz | –56 | |||||
3rd Harm, 433 MHz | –51 | |||||
2nd Harm, 450 MHz | –60 | |||||
3rd Harm, 450 MHz | –45 | |||||
2nd Harm, 868 MHz | –40 | |||||
3rd Harm, 868 MHz | –42 | |||||
2nd Harm, 915 MHz | 56 | dBµV/m | ||||
3rd Harm, 915 MHz | 52 | |||||
4th Harm, 915 MHz | 60 | |||||
2nd Harm, 950 MHz | –58 | dBm | ||||
3rd Harm, 950 MHz | –42 | |||||
Optimum load impedance | 868-, 915-, and 920-MHz bands | 35 + j35 | Ω | |||
433 MHz band | 55 + j25 | |||||
169 MHz band | 80 + j0 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
HIGH-PERFORMANCE MODE | ||||||
Phase noise in 950-MHz band | ± 10 kHz offset | –99 | dBc/Hz | |||
± 100 kHz offset | –99 | |||||
± 1 MHz offset | –123 | |||||
Phase noise in 868-, 915-, 920-MHz bands | ± 10 kHz offset | –99 | dBc/Hz | |||
± 100 kHz offset | –100 | |||||
± 1 MHz offset | –122 | |||||
Phase noise in 433-MHz band | ± 10 kHz offset | –106 | dBc/Hz | |||
± 100 kHz offset | –107 | |||||
± 1 MHz offset | –127 | |||||
Phase noise in 169-MHz band | ± 10 kHz offset | –111 | dBc/Hz | |||
± 100 kHz offset | –116 | |||||
± 1 MHz offset | –135 | |||||
LOW-POWER MODE(1) | ||||||
Phase noise in 950-MHz band | ± 10 kHz offset | –90 | dBc/Hz | |||
± 100 kHz offset | –92 | |||||
± 1 MHz offset | –124 | |||||
Phase noise in 868-, 915-, 920-MHz bands | ± 10 kHz offset | –95 | dBc/Hz | |||
± 100 kHz offset | –95 | |||||
± 1 MHz offset | –124 | |||||
Phase noise in 433-MHz band | ± 10 kHz offset | –98 | dBc/Hz | |||
± 100 kHz offset | –102 | |||||
± 1 MHz offset | –129 | |||||
Phase noise in 169-MHz band | ± 10 kHz offset | –106 | dBc/Hz | |||
± 100 kHz offset | –110 | |||||
± 1 MHz offset | –136 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
Clock frequency | 31.25 | 32 | 33.6 | MHz | ||
TCXO with CMOS output(1) | High input voltage | TCXO with CMOS output directly coupled to pin EXT_OSC | 1.4 | VDD | V | |
Low input voltage | 0 | 0.6 | ||||
Clipped sine output | Clock input amplitude (peak-to-peak) |
TCXO clipped sine output connected to pin EXT_OSC through series capacitor | 0.8 | 1.5 | V |
PARAMETER | MIN | TYP | MAX | UNIT |
---|---|---|---|---|
Clock frequency | 32 | kHz | ||
32-kHz clock input pin input high voltage | 0.8 × VDD | V | ||
32-kHz clock input pin input high voltage | 0.2 × VDD | V |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
Frequency | After calibration | 32 | kHz | ||
Frequency accuracy after calibration | Relative to frequency reference (32-MHz crystal or TCXO) |
±0.1% | |||
Initial calibration time(1) |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
Logic input high voltage | 0.8 × VDD | V | |||
Logic input low voltage | 0.2 × VDD | V | |||
Logic output high voltage | At 4-mA output load or less | 0.8 × VDD | V | ||
Logic output low voltage | 0.2 × VDD | V | |||
Power-on reset threshold | Voltage on DVDD pin | 1.3 | V |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
Temperature sensor range | –40 | 85 | °C | ||
Temperature coefficient | Change in sensor output voltage versus change in temperature | 2.66 | mV/°C | ||
Typical output voltage | Typical sensor output voltage at TA = 25°C, VDD = 3.0 V |
794 | mV | ||
VDD coefficient | Change in sensor output voltage versus change in VDD | 1.17 | mV/V |
NAME | DESCRIPTION | °C/W(1) |
---|---|---|
RΘJC(top) | Junction-to-case (top) | 21.1 |
RΘJB | Junction-to-board | 5.3 |
RΘJA | Junction-to-free air | 31.3 |
PsiJT | Junction-to-package top | 0.2 |
PsiJB | Junction-to-board | 5.3 |
RΘJC(bot) | Junction-to-case (bottom) | 0.8 |
PARAMETER | TEST CONDITIONS | MIN | NOM | MAX | UNIT | |
---|---|---|---|---|---|---|
Power down to IDLE | Depends on crystal | 0.4 | ms | |||
IDLE to RX/TX | Calibration disabled | 166 | µs | |||
Calibration enabled | 461 | |||||
RX/TX turnaround | 50 | µs | ||||
RX/TX to IDLE time | Calibrate when leaving RX/TX enabled | 296 | µs | |||
Calibrate when leaving RX/TX disabled | 0 | |||||
Frequency synthesizer calibration | When using SCAL strobe | 391 | µs | |||
Time from start RX until valid RSSI Including gain settling (function of channel bandwidth. Programmable for trade-off between speed and accuracy) |
12.5-kHz channels | 4.6 | ms | |||
200-kHz channels | 0.3 | |||||
32-MHz CLOCK INPUT (TCXO)(1) | ||||||
TCXO with CMOS output | Rise and fall time | 2 | ns | |||
32-kHz RC OSCILLATOR(2) | ||||||
Initial calibration time | 1.6 | ns |
PERFORMANCE MODE | FREQUENCY BAND | SUITABLE FOR COMPLIANCE WITH | |
---|---|---|---|
High-performance mode | 820–960 MHz(1) | ARIB T-96 ARIB T-108 ETSI EN 300 220 category 2 ETSI EN 54-25 FCC PART 101 FCC PART 24 SUBMASK D FCC PART 15.247 FCC PART 15.249 FCC PART 90 MASK G FCC PART 90 MASK J |
|
410–480 MHz(2) | ARIB T-67 ARIB RCR STD-30 ETSI EN 300 220 category 1 FCC PART 90 MASK D FCC PART 90 MASK G |
||
164–192 MHz(2) | ETSI EN 300 220 category 1 FCC PART 90 MASK D |
||
Low-power mode | 820–960 MHz | ETSI EN 300 220 category 2 FCC PART 15.247 FCC PART 15.249 |
|
410–480 MHz | ETSI EN 300 220 category 2 | ||
164–192 MHz | ETSI EN 300 220 category 2 |
TA = 25°C, VDD = 3.0 V, fc = 869.5 MHz if nothing else stated.
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.
Figure 4-17 was measured at the 50-Ω antenna connector.
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
Max Setting, | 170 MHz, |
9.6 kbps in 12.5-kHz Channel |
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
1.2 kbps, | 4-kHz Deviation, | 10-kHz Channel Filter Bandwidth |
Max Setting, | 170 MHz, | 3.6 V |
1.2 kbps 2-FSK, | DEV = 4 kHz |
Figure 5-1 shows the system block diagram of the CC1120 devices.
At the center of the CC1120 device 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 analog-to-digital converter (ADC) and the digital part. To reduce system cost, CC1120 device has high-accuracy frequency estimation and compensation registers to measure and compensate for crystal inaccuracies. This compensation enables the use of lower cost crystals. If a TCXO is used, the CC1120 device automatically turns on and off the TCXO when needed to support low-power modes and Wake-On-Radio operation.
The CC1120 device features a highly flexible receiver. The received RF signal is amplified by the low-noise amplifier (LNA) and is down-converted in quadrature (I/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 CC1120 device to receive strong and weak signals, even in the presence of strong interferers. High-attenuation channels and data filtering enable reception with strong neighbor channel interferers. The I/Q signal is converted to a phase and magnitude signal to support the FSK and OOK modulation schemes.
NOTE
A unique I/Q compensation algorithm removes any problem of I/Q mismatch, thus avoiding time-consuming and costly I/Q image calibration steps.
The CC1120 device only requires preamble to settle the AGC. The minimum number of preamble required is 0.5 byte.
The CC1120 transmitter is based on direct synthesis of the RF frequency (in-loop modulation). To use the spectrum effectively, the CC1120 device has extensive data filtering and shaping in TX mode 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.
The CC1120 digital control system is built around the main radio control (MARC), which is 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 mode until a valid RF packet is received. This greatly reduces power consumption. When the host MCU receives a valid RF packet, it burst-reads the data. This reduces the required computing power.
The CC1120 radio control and user interface are based on the widely used CC1101 transceiver. This relationship enables an easy transition between the two platforms. The command strobes and the main radio states are the same for the two platforms.
For legacy formats, the CC1120 device also supports two serial modes.
eWOR, using a flexible integrated sleep timer, enables automatic receiver polling with no intervention from the MCU. When the CC1120 device enters RX mode, it listens and then returns 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.
The CC1120 device supports quick start up times, and requires few preamble bits. Sniff mode uses these conditions to dramatically reduce the current consumption while the receiver is waiting for data.
Because the CC1120 device can wake up and settle much faster than the duration of most preambles, it is not required to be in RX mode continuously while waiting for a packet to arrive. Instead, the enhanced Wake-On-Radio feature can be used to put the device into sleep mode periodically. By setting an appropriate sleep time, the CC1120 device can wake up and receive the packet when it arrives with no performance loss. This sequence removes the need for accurate timing synchronization between transmitter and receiver, and lets the user trade off current consumption between the transmitter and receiver.
For more information, see the sniff mode design note (SWRA428).
Antenna diversity can increase performance in a multipath environment. An external antenna switch is required. The CC1201 device uses one of the GPIO pins to automatically control the switch. This device also supports differential output control signals typically used in RF switches.
If antenna diversity is enabled, the GPIO alternates between high and low states until a valid RF input signal is detected. An optional acknowledge packet can be transmitted without changing the state of the GPIO.
An incoming RF signal can be validated by received signal strength or by using the automatic preamble detector. Using the automatic preamble detector ensures a more robust system and avoids the need to set a defined signal strength threshold (such a threshold sets the sensitivity limit of the system).
Advanced capture logic locks onto the synchronization word and does not require preamble settling bytes. Therefore, receiver settling time is reduced to the settling time of the AGC, typically 4 bits.
The WaveMatch feature also greatly reduces false sync triggering on noise, further reducing the power consumption and improving sensitivity and reliability. The same logic can also be used as a high-performance preamble detector to reliably detect a valid preamble in the channel.
NOTE
Information in the following Applications section is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
NOTE
This section is intended only as an introduction. The reference designs listed in Section 6.1.2 show everything required.
Very few external components are required for the operation of the CC1120 device. Figure 6-1 shows a typical application circuit. The board layout will greatly influence the RF performance of the CC1120 device. Figure 6-1 does not show decoupling capacitors for power pins.
The following reference designs are available for the CC1120 device:
CC1120EM 868/915 MHz Reference Design (SWRC222)
CC112x IPC 868- and 915-MHz 2-layer Reference Design (SWRR106)
CC112x IPC 868- and 915-MHz 4-layer Reference Design (SWRR107)