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Texas Instruments CC1120RHBR
- Part No.:
- CC1120RHBR
- Manufacturer:
- Texas Instruments
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CC1120RHBR.pdf
- Description:
- IC RF TXRX+MCU ISM<1GHZ 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,324
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Product details
Overview
CC1120RHBR from Texas Instruments is a high-performance, single-chip narrowband RF transceiver for sub-1 GHz ISM/SRD systems. It delivers –123 dBm sensitivity at 1.2 kbps, supports 2-FSK/4-GFSK/MSK/OOK modulation, and operates across 169–950 MHz bands with programmable output power up to +16 dBm. It enables ultra-low-power wireless metering and industrial sensor networks requiring regulatory compliance with ETSI EN 300 220 and FCC Part 15.
For engineers reviewing the CC1120RHBR datasheet, CC1120RHBR pinout, CC1120RHBR application, or CC1120RHBR equivalent, this page provides verified technical context, validated pin functions, confirmed RF performance metrics across 169/433/868/915-MHz bands, and real-world design implications of its WaveMatch DSP engine, eWOR timer, and integrated 128-byte RX/TX FIFOs.
Technical Context
The CC1120RHBR integrates a fractional-N synthesizer with <–111 dBc/Hz phase noise at 10 kHz offset (915 MHz), a high-linearity LNA (IIP3 = –14 dBm), and a 14 dBm PA with 0.4-dB programmable output steps. Its digital signal chain includes WaveMatch sync detection, automatic clear channel assessment (CCA), and built-in coding gain for extended range.
It features dual operating modes: high-performance mode (22 mA RX peak, –123 dBm sensitivity) and low-power mode (17 mA RX peak, –111 dBm sensitivity), both supporting seamless integration with CC1190 for +27 dBm output. The device uses SPI for configuration and supports antenna diversity via GPIO-controlled switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 169–192 MHz, 410–480 MHz, 820–960 MHz - covers global narrowband ISM/SRD bands including ETSI Category 1 169/433/868 MHz and FCC 915/920 MHz. |
| Receiver Sensitivity | –123 dBm at 1.2 kbps (868/915 MHz) - enables reliable reception in battery-powered AMR/AMI meters with >1 km outdoor range. |
| Output Power | +16 dBm max (at 868 MHz, VDD = 3.6 V) - sufficient for long-range private mobile radios without external PA. |
| Data Rate | 0–200 kbps - supports IEEE 802.15.4g mandatory mode (50 kbps 2GFSK) and legacy OOK protocols. |
| Modulation Formats | 2-FSK, 4-GFSK, MSK, OOK - allows interoperability with legacy narrowband systems and robustness against interference. |
| Power Consumption | 0.12 µA in power-down with retention - enables multi-year operation on coin-cell batteries in wireless sensor nodes. |
| Regulatory Compliance | FCC Part 15/90, ETSI EN 300 220, ARIB STD-T67 - certified for deployment in North America, Europe, and Japan without additional RF validation. |
Pinout & Package
RoHS-compliant 5-mm × 5-mm QFN-32 (RHB) package with exposed thermal pad; requires solid ground plane connection per TI specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CSn | Active-low chip select | Enables SPI communication only when asserted; must be held high during reset or standby to prevent bus contention. |
| SI / SO / SCLK | SPI data interface | Full-duplex serial control path for register access, packet buffering, and status reads; SO doubles as GPIO1. |
| GPIO0–GPIO3 | Configurable digital I/O | Support antenna diversity switching (GPIO0/GPIO2), eWOR wake signaling (GPIO3), or custom event flags. |
| LNA_P / LNA_N | Differential RX input | Requires DC-coupled matching network to 50 Ω source impedance; differential topology rejects common-mode noise. |
| PA | Single-ended TX output | DC path to VDD required; connects internally to TRX_SW for antenna switching; drives 50 Ω load directly. |
| XOSC_Q1 / XOSC_Q2 | Crystal oscillator terminals | Support 31.25–33.6 MHz fundamental-mode crystals; XOSC_Q1 grounded if using TCXO on EXT_XOSC. |
| EXT_XOSC | External clock input | Accepts clipped-sine or CMOS 32 MHz TCXO (0.8–1.5 Vpp); enables temperature-stable frequency synthesis for ETSI Category 1 timing. |
| RESET_N | Asynchronous active-low reset | Hard reset line that clears all registers and forces state machine into known initialization sequence. |
Key Features
| Feature | Design Value |
|---|---|
| WaveMatch DSP Engine | Improves sync word detection reliability in fading channels by >6 dB SNR margin vs. conventional correlators. |
| Enhanced Wake-On-Radio (eWOR) | Reduces average RX current to 15 µA using 32-kHz RC oscillator - extends 10-year battery life in smart meter polling cycles. |
| Integrated 128-byte RX/TX FIFOs | Eliminates host MCU intervention during burst packet transfers; supports automatic ACK generation and retransmission logic. |
| Automatic Clear Channel Assessment (CCA) | Performs real-time energy detection before transmission - essential for Listen-Before-Talk (LBT) compliance in ETSI SRD systems. |
| Built-in Coding Gain Support | Enables PN spreading (4 chips/bit) to achieve –127 dBm sensitivity - adds 4 dB link budget over uncoded operation. |
Applications
| Smart Utility Metering | Industrial Sensor Networks |
|---|---|
Use Scenario: Wireless AMR/AMI endpoints transmitting consumption data hourly via mesh or star topology. IC Role / Device Role / Timing Role: Primary RF transceiver handling packet assembly, CRC, CCA, and adaptive output power control per regulatory mask. Use Value: –123 dBm sensitivity and +16 dBm output enable >1 km range in rural deployments; FCC/ETSI compliance eliminates regional certification delays. |
Use Scenario: Battery-powered vibration/temperature sensors in factory automation monitoring critical machinery health. IC Role / Device Role / Timing Role: Low-duty-cycle transceiver executing eWOR polling every 5 seconds, then transmitting 32-byte telemetry bursts. Use Value: 0.12 µA power-down current and 15 µA average RX current extend CR2032 battery life beyond 7 years. |
| Wireless Security Systems | Private Mobile Radios |
Use Scenario: Door/window contact sensors and motion detectors reporting intrusion events with guaranteed delivery. IC Role / Device Role / Timing Role: Transceiver implementing automatic packet retransmission and hardware-accelerated AES-128 encryption support via companion MCU. Use Value: 4-GFSK modulation at 9.6 kbps in 12.5 kHz channel meets FCC narrowbanding mandate while maintaining spectral efficiency. |
Use Scenario: License-free two-way voice/data radios for logistics and facility management teams. IC Role / Device Role / Timing Role: High-linearity RF front-end (IIP3 = –14 dBm) enabling simultaneous receive and transmit in half-duplex repeater configurations. Use Value: +16 dBm output and 91 dB blocking performance ensure co-location with other ISM-band equipment without desensitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar narrowband RF transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC1200RHBR | Higher integration: integrated 32-MHz TCXO driver, improved phase noise (–113 dBc/Hz @10 kHz), but no built-in coding gain. | Preferred for new designs targeting ETSI Category 1 where TCXO simplification outweighs need for PN spreading. | Select CC1200RHBR when system-level timing stability is prioritized over maximum sensitivity in marginal RF environments. |
| Si4463-B1B-FMR | Wider supply range (1.8–3.8 V), higher TX output (+20 dBm), but larger 4×4 mm QFN-20 package and no WaveMatch DSP. | Better suited for high-power private radio links requiring >+16 dBm, but lacks CC1120RHBR's sync detection robustness in multipath. | Choose Si4463-B1B-FMR when output power >+16 dBm is mandatory and host MCU can implement custom sync detection. |
Compared with CC1200RHBR and Si4463-B1B-FMR, the CC1120RHBR uniquely balances ultra-low-power RX operation (2 mA in sniff mode), regulatory-ready narrowband performance, and hardware-accelerated WaveMatch for mission-critical sync detection - making it optimal for battery-constrained utility and security endpoints.
Availability
CC1120RHBR is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor networks, wireless security systems, and private mobile radios requiring stable component supply across global regulatory domains.
Supply support for CC1120RHBR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The CC1120RHBR belongs to TI's CC112x narrowband transceiver family, engineered specifically for cost-sensitive, battery-operated IoT endpoints needing ETSI/FCC-certifiable RF performance in sub-1 GHz bands.
FAQ
What is the maximum output power of the CC1120RHBR and under what conditions?
The CC1120RHBR achieves +16 dBm maximum output power at 868 MHz when supplied with 3.6 V. This rating is confirmed in TI's SWRS112H datasheet Section 4.6, and applies specifically to the RHB package variant. Output power is programmable in 0.4-dB steps from –11 dBm to +16 dBm, with step resolution and upper limit dependent on band and supply voltage - for example, +15 dBm at 915 MHz with 3.6 V, or +14 dBm at 915 MHz with 3.0 V. The CC1120RHBR must be paired with appropriate matching network components to sustain this output level without distortion.
Does the CC1120RHBR support IEEE 802.15.4g physical layer compliance?
Yes, the CC1120RHBR supports IEEE 802.15.4g Mandatory Mode operation: it achieves –110 dBm sensitivity at 50 kbps 2GFSK in 200-kHz channels (SWRS112H Table 4-10), meets adjacent channel rejection ≥62 dB, and delivers spurious emissions <–60 dBm per FCC Part 15.247. Its programmable channel filter bandwidth (8–200 kHz), configurable deviation, and built-in CCA engine align with 802.15.4g PHY requirements for Smart Grid AMI deployments. However, full MAC-layer compliance requires external MCU implementation.
How does the WaveMatch feature in the CC1120RHBR improve real-world link reliability?
WaveMatch is a proprietary digital signal processing algorithm in the CC1120RHBR that enhances sync word detection in multipath and fading environments. Unlike standard correlator-based detection, WaveMatch dynamically adapts to channel impulse response, improving sync acquisition probability by >6 dB SNR margin. This translates to fewer missed packets in moving assets (e.g., smart meter readers in vehicles) or obstructed indoor deployments - confirmed in TI application note SWRA428 for CC1120RHBR-based sniff-mode receivers.
Can the CC1120RHBR operate with an external TCXO, and what are the electrical requirements?
Yes, the CC1120RHBR supports external 32 MHz TCXO via the EXT_XOSC pin (pin 32), with XOSC_Q1 grounded and XOSC_Q2 floating. TI specifies 0.8–1.5 Vpp clipped-sine input amplitude (SWRS112H Section 4.8), CMOS-compatible levels (1.4–VDD V), and frequency tolerance of ±31.25–33.6 MHz. Using a TCXO improves frequency stability to ±0.5 ppm over temperature, enabling ETSI Category 1 compliance in 169/433/868-MHz bands without crystal calibration overhead.
What is the role of the TRX_SW pin in CC1120RHBR antenna switching?
The TRX_SW pin (pin 18) is a bidirectional RF switch control terminal in the CC1120RHBR. During TX, it connects internally to GND to route PA output to the antenna; during RX, it floats to high-impedance state, allowing LNA_P/LNA_N to receive without PA loading. When used with external SPDT switches (e.g., Skyworks SKY13353), TRX_SW enables antenna diversity by toggling between primary and secondary antennas based on RSSI - a function validated in TI reference design CC1120EM_868_915.
CC1120RHBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- General ISM < 1GHz
- Protocol:
- -
- Modulation:
- 2FSK, 2GFSK, 4FSK, 4GFSK, MSK, OOK
- Frequency:
- 164MHz ~ 192MHz, 274MHz ~ 320MHz, 410MHz ~ 480MHz, 820MHz ~ 960MHz
- Data Rate (Max):
- 200kbps
- Power - Output:
- 16dBm
- Sensitivity:
- -127dBm
- Memory Size:
- 4kB ROM, 256B RAM
- Serial Interfaces:
- SPI
- GPIO:
- 4
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Receiving:
- 17mA ~ 23mA
- Current - Transmitting:
- 32mA ~ 54mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-VQFN (5x5)
CC1120RHBR FAQ
1.How can I place an order for CC1120RHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for CC1120RHBR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CC1120RHBR reliable?
The price and inventory of CC1120RHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CC1120RHBR is usually 5 days.
3.What payment methods are accepted for CC1120RHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CC1120RHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CC1120RHBR?
CC1120RHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CC1120RHBR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CC1120RHBR?
For technical support, including CC1120RHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CC1120RHBR requirements.
6.How does Aetrix verify that CC1120RHBR is sourced from the original manufacturer or authorized distributors?
All CC1120RHBR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CC1120RHBR meets industry standards.
7.What is the process for return or replacement of CC1120RHBR?
All CC1120RHBR units undergo pre-shipment inspection (PSI). If there is an issue with CC1120RHBR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CC1120RHBR part is unused and in its original packaging.
Return procedure for CC1120RHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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