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Texas Instruments CC1125RHBR
- Part No.:
- CC1125RHBR
- Manufacturer:
- Texas Instruments
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CC1125RHBR.pdf
- Description:
- IC RF TXRX+MCU ISM<1GHZ 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,715
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Product details
Overview
CC1125RHBR from Texas Instruments is an ultra-high-performance, single-chip narrowband RF transceiver IC for ISM/SRD bands (164–192 MHz, 410–480 MHz, 820–960 MHz). It delivers –129 dBm sensitivity at 300 bps, +16 dBm programmable output power with 0.4-dB steps, and supports 2-FSK/4-FSK/GFSK/MSK/OOK modulation up to 200 kbps - enabling long-range, low-power wireless metering and alarm systems.
For engineers reviewing the CC1125RHBR datasheet, CC1125RHBR pinout, CC1125RHBR application, or CC1125RHBR equivalent, this page provides verified technical context, validated pin functions, confirmed regulatory compliance (ETSI EN 300 220 Cat 1, FCC Part 15/90/101), real-world current consumption data (2 mA RX Sniff, 47 mA TX @ +14 dBm), and two rigorously cross-checked alternative transceivers.
Technical Context
The CC1125RHBR integrates a fractional-N synthesizer with <15 Hz frequency resolution in 410–480 MHz band, a high-linearity LNA (IIP3 = –14 dBm), and a 14 dBm PA with automatic ramping. Its digital signal processing includes WaveMatch sync detection, eWOR timer, and hardware-accelerated packet handling with separate 128-byte RX/TX FIFOs.
It operates from 2.0 V to 3.6 V, supports TCXO input via EXT_XOSC, and features dual clock domains: high-speed crystal/TCXO (32–40 MHz) and auto-calibrated 32-kHz RC oscillator. All RF filters are fully integrated, eliminating external SAW/IF components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity | –129 dBm @ 300 bps (enables sub-1 µV signal reception in utility AMR) |
| Output Power | +16 dBm max with 0.4-dB step size (supports ETSI Cat 1 & FCC Part 90 mask compliance) |
| Data Rate | 0–200 kbps in packet mode (covers IEEE 802.15.4g mandatory & optional rates) |
| Frequency Bands | 164–192 / 410–480 / 820–960 MHz (multi-band support without hardware change) |
| Current Consumption | 2 mA in RX Sniff mode; 47 mA TX @ +14 dBm, 868 MHz (enables >10-year battery life in wake-on-radio sensors) |
| Modulation Support | 2-FSK, 4-FSK, 2-GFSK, 4-GFSK, MSK, OOK (interoperable with legacy narrowband protocols) |
| Regulatory Compliance | ETSI EN 300 220 Cat 1, EN 301 166, FCC Part 15/24/90/101, ARIB STD-T30/T-67/T-108 |
Pinout & Package
RoHS-compliant 5-mm × 5-mm QFN-32 package (RHB) with exposed thermal pad; requires solid ground plane connection per TI specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA | TX output / RX switch node | Single-ended RF output requiring DC path to VDD; internally grounded during RX |
| LNA_P / LNA_N | Differential RX input | High-impedance differential antenna interface; requires DC path to GND |
| CSn, SI, SO, SCLK | SPI interface | 4-wire serial control/data bus; SO doubles as GPIO1 |
| RESET_N | Asynchronous reset | Active-low, level-sensitive input; must be held low ≥100 ns for full reset |
| EXT_XOSC | External clock input | Accepts TCXO or buffered clock; XOSC_Q1/Q2 grounded when used |
| GPIO0–GPIO3 | General-purpose I/O | Configurable digital I/O with interrupt capability; support antenna diversity control |
Key Features
| Feature | Design Value |
|---|---|
| WaveMatch DSP engine | Improves sync word detection reliability in fading channels without increasing preamble length |
| eWOR timer | Enables autonomous low-power receive polling with <15 µA average current at 1-second intervals |
| Integrated loop filter pins (LPF0/LPF1) | Allows external tuning of PLL bandwidth for optimal phase noise vs. lock time trade-off |
| Hardware packet handler | Offloads microcontroller with CRC-16/32, address filtering, auto-ack, and retransmission logic |
| Antenna diversity support | GPIO-controlled RF switch interface enables diversity reception without external logic |
Applications
| Smart Utility Metering | Wireless Security Alarms |
|---|---|
Use Scenario: Battery-powered gas/water/electricity meters transmitting hourly consumption data over 1–3 km in dense urban environments. IC Role / Device Role / Timing Role: Primary RF transceiver handling modulation, channel filtering, and packet framing; synchronized to TCXO for ±0.5 ppm frequency stability. Use Value: –129 dBm sensitivity and +16 dBm output enable reliable link budget >135 dB, meeting EN 13757-4 requirements without external PA. |
Use Scenario: Door/window sensors and panic buttons reporting intrusion events with <500-ms latency to central panel using sub-GHz mesh. IC Role / Device Role / Timing Role: Low-latency transceiver with automatic clear-channel assessment (CCA) and fast wake-up (<200 µs) from RX Sniff mode. Use Value: 2 mA RX Sniff current extends 2-AA battery life beyond 5 years; OOK/FSK flexibility ensures compatibility with legacy alarm panels. |
| Industrial Sensor Networks | Private Mobile Radio Systems |
Use Scenario: Wireless temperature/pressure nodes in oil refinery pipelines operating at 169 MHz with high EMI immunity. IC Role / Device Role / Timing Role: Narrowband transceiver with 67 dB adjacent-channel selectivity at 6.25 kHz offset and 104 dB blocking at 10 MHz. Use Value: Integrated high-linearity LNA (IIP3 = –14 dBm) rejects strong out-of-band interferers common in industrial RF environments. |
Use Scenario: License-free push-to-talk radios for warehouse logistics using 868/915 MHz with voice-grade 4-GFSK at 9.6 kbps. IC Role / Device Role / Timing Role: Full-duplex-capable transceiver supporting seamless TX/RX switching via TRX_SW control and built-in RSSI/carrier sense. Use Value: 9.6 kbps in 12.5-kHz channel meets FCC narrowbanding mandate while maintaining spectral efficiency >0.77 bps/Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar narrowband RF transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC1201RHBR | Lower max output (+14 dBm), reduced sensitivity (–120 dBm @ 1.2 kbps), no WaveMatch DSP | Better suited for cost-sensitive, medium-range (<1 km) sensor networks where ultra-low power dominates | Select CC1201RHBR if system budget constraints outweigh need for ETSI Cat 1 range or advanced sync detection |
| Si4463-B1B | +20 dBm output, –126 dBm sensitivity @ 1.2 kbps, integrated DC-DC converter, different SPI register map | Preferred for battery-powered devices requiring >10-year life with integrated power management | Choose Si4463-B1B when higher output power and on-chip buck regulator justify migration from TI ecosystem |
Compared with CC1125RHBR, CC1201RHBR trades sensitivity and DSP features for lower BOM cost, while Si4463-B1B adds DC-DC efficiency and higher output but requires full firmware rework due to non-compatible register architecture.
Availability
CC1125RHBR is available at Aetrix Electronics and suitable for smart utility metering, wireless security alarms, industrial sensor networks, private mobile radio systems, and IEEE 802.15.4g infrastructure requiring stable component supply across multi-year production cycles.
Supply support for CC1125RHBR 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, with decades of RF IC design heritage and broad industrial qualification.
The CC1125RHBR belongs to TI's CC112x ultra-narrowband transceiver family, engineered specifically for regulatory-compliant, long-range, low-power wireless systems in utility, security, and industrial markets.
FAQ
What is the maximum output power of the CC1125RHBR and under what conditions?
The CC1125RHBR achieves +16 dBm maximum output power at 868 MHz and 433 MHz when supplied with 3.6 V, and +15 dBm at 915/920 MHz under same conditions. This is enabled by its high-efficiency PA and fine 0.4-dB step control. The CC1125RHBR datasheet specifies these values in Section 4.11 with test conditions including TA = 25°C, VDD = 3.6 V, and fxosc = 40 MHz.
Does the CC1125RHBR support TCXO integration, and how is it configured?
Yes, the CC1125RHBR supports external TCXO via the EXT_XOSC pin. When used, XOSC_Q1 and XOSC_Q2 must be grounded, and the TCXO signal must meet voltage and slew-rate specifications in Section 4.15. This configuration enables ±0.5 ppm frequency stability required for ETSI EN 300 220 Category 1 compliance. The CC1125RHBR automatically detects and locks to the external clock source.
What are the key differences between CC1125RHBR and CC1120RHBR?
The CC1125RHBR offers superior RF performance versus CC1120RHBR: +3 dB higher sensitivity (–129 dBm vs. –126 dBm @ 300 bps), +2 dB higher output power (+16 dBm vs. +14 dBm), improved blocking (104 dB vs. 97 dB at 10 MHz), and enhanced WaveMatch DSP. The CC1125RHBR also adds dedicated TCXO support and extended frequency coverage into 169 MHz band.
Can the CC1125RHBR operate in low-power receive modes, and what is the typical current draw?
Yes, the CC1125RHBR supports multiple low-power RX modes. In RX Sniff mode, it draws just 2 mA while waking periodically to detect packets - ideal for battery-operated sensors. With eWOR enabled and 1-second polling interval, average current drops to 15 µA. These values are measured per Section 4.9.1 and confirmed across 868/915 MHz bands at VDD = 3.0 V.
Which modulation schemes does the CC1125RHBR natively support, and are they configurable via SPI?
The CC1125RHBR natively supports 2-FSK, 4-FSK, 2-GFSK, 4-GFSK, MSK, and OOK modulation schemes. All are fully configurable via SPI register writes - including deviation, channel filter bandwidth, data rate, and modulation index - without firmware changes. Configuration registers are documented in Section 5.5 of the CC1125RHBR datasheet SWRS120E.
CC1125RHBR 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:
- -129dBm
- Memory Size:
- 4kB ROM, 256B RAM
- Serial Interfaces:
- SPI
- GPIO:
- 4
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Receiving:
- 17mA ~ 27mA
- Current - Transmitting:
- 26mA ~ 56mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-VQFN (5x5)
CC1125RHBR FAQ
1.How can I place an order for CC1125RHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for CC1125RHBR 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 CC1125RHBR reliable?
The price and inventory of CC1125RHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CC1125RHBR is usually 5 days.
3.What payment methods are accepted for CC1125RHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CC1125RHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CC1125RHBR?
CC1125RHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CC1125RHBR 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 CC1125RHBR?
For technical support, including CC1125RHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CC1125RHBR requirements.
6.How does Aetrix verify that CC1125RHBR is sourced from the original manufacturer or authorized distributors?
All CC1125RHBR 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 CC1125RHBR meets industry standards.
7.What is the process for return or replacement of CC1125RHBR?
All CC1125RHBR units undergo pre-shipment inspection (PSI). If there is an issue with CC1125RHBR, 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 CC1125RHBR part is unused and in its original packaging.
Return procedure for CC1125RHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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