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Texas Instruments CC1021-RTR1
- Part No.:
- CC1021-RTR1
- Manufacturer:
- Texas Instruments
- Category:
- RF Transceiver ICs
- Package:
- 32-VQFN Exposed Pad
- Datasheet:
-
CC1021-RTR1.pdf
- Description:
- IC RF TXRX ISM<1GHZ 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,870
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Product details
Overview
CC1021-RTR1 from Texas Instruments is a single-chip UHF RF transceiver for narrowband ISM/SRD systems, operating in 402–470 MHz and 804–930 MHz bands with programmable output power (–20 to +10 dBm at 433 MHz), –109 dBm receiver sensitivity at 38.4 kHz filter bandwidth, and support for OOK/FSK/GFSK modulation up to 153.6 kBaud. It serves as the RF front-end in low-power telemetry and AMR systems.
For engineers reviewing the CC1021-RTR1 datasheet, CC1021-RTR1 pinout, CC1021-RTR1 application, or CC1021-RTR1 equivalent, this page delivers verified functional identity, QFN-32 package mapping, SPI-configurable RF parameters, EN 300 220/FCC Part 15 compliance context, and validated alternative transceivers for narrowband sub-GHz designs.
Technical Context
The CC1021-RTR1 integrates a direct-conversion receiver with I/Q demodulation, image-rejection mixer, and digital channel filtering (38.4–307.2 kHz bandwidth), plus a fractional-N PLL synthesizer with AFC and programmable loop bandwidth (up to 15 kHz). Its architecture supports synchronous and asynchronous data modes via DIO/DCLK interface.
It features dual-mode RF frontend control: internal PA/LNA stages with external biasing (R_BIAS, PA_EN, LNA_EN), VCO tuning via VC input, and charge-pump output (CHP_OUT) for external loop filter implementation. Crystal oscillator supports 4.9152–19.6608 MHz parallel-resonant crystals with programmable bypass mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 402–470 MHz and 804–930 MHz; programmable in <300 Hz/600 Hz steps for multichannel narrowband operation. |
| Receiver Sensitivity | –109 dBm at 433 MHz, 38.4 kHz filter BW (FSK, BER=10⁻³); enables robust reception in low-SNR AMR environments. |
| Output Power | –20 to +10 dBm at 433 MHz; digitally programmable via register writes, with hardware limits preventing >+10 dBm violation. |
| Data Rate | 0.45–153.6 kBaud NRZ; supports Manchester encoding and bit-synchronization offset tolerance up to ±8000 ppm. |
| Modulation Schemes | OOK, FSK, GFSK; integrated bit synchronizer and digital demodulator eliminate need for external baseband processing. |
| Supply Voltage | 2.3–3.6 V; single-supply operation with shared DVDD/AVDD rails simplifies power design in battery-powered nodes. |
| RSSI Accuracy | ±3 dB over 55 dB dynamic range; enables reliable link quality estimation without external ADC or calibration. |
Pinout & Package
CC1021-RTR1 uses a 7.00 mm × 7.00 mm VQFNP-32 (QFN) package with exposed die-attach pad soldered to solid ground plane per TI specification. All 32 pins are electrically defined and functionally validated per SWRS045F Rev. F.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PSEL, PDI, PDO, PCLK | SPI configuration interface | 4-wire serial bus for register programming; PSEL active-low chip select with internal pullup enables daisy-chaining. |
| DIO, DCLK, LOCK | Asynchronous/synchronous data interface | DIO carries RX/TX data; DCLK outputs bit clock; LOCK indicates PLL lock status (active-low) or serves as general-purpose output. |
| RF_IN, RF_OUT | RF signal paths | Single-ended 50 Ω RF_IN (433 MHz: 58–j10 Ω matched) and RF_OUT (433 MHz: 54+j44 Ω optimum load) require external matching networks. |
| XOSC_Q1, XOSC_Q2 | Crystal oscillator terminals | Support parallel-resonant crystals (4.9152–19.6608 MHz); XOSC_Q1 accepts external clock (300 mVpp sine or full-swing digital). |
| PA_EN, LNA_EN | External device control outputs | Digital outputs to enable external PA/LNA; decouples internal gain staging from system-level RF chain optimization. |
| VC, CHP_OUT | VCO control interface | VC accepts analog tuning voltage; CHP_OUT drives external loop filter-enables custom PLL stability and phase-noise tradeoffs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IF channel filter | Programmable 6 dB bandwidth (38.4–307.2 kHz) replaces external SAW filters and reduces BOM count in narrowband receivers. |
| Digital RSSI and carrier sense | On-chip 10-bit ADC-based RSSI with ±3 dB accuracy and 40 dB programmable carrier sense threshold eliminates external detector diodes. |
| Automatic Frequency Control (AFC) | Corrects LO drift during temperature/voltage variation by adjusting synthesizer frequency in real time-critical for long-duration AMR reads. |
| Image rejection mixer | 25 dB native image rejection (uncalibrated), rising to 50 dB with I/Q gain/phase calibration-reduces need for high-selectivity pre-filters. |
| EN 300 220 / FCC Part 15 compliance support | Built-in spurious emission suppression (<–60 dBm radiated), harmonic attenuation (–50 dBc), and adjacent channel power (–46 dBc) meet regulatory test limits. |
Applications
| AMR – Automatic Meter Reading | Wireless Security Systems |
|---|---|
Use Scenario: Battery-powered gas/water meters transmitting consumption data hourly over 100–300 m distances in residential neighborhoods. IC Role / Device Role / Timing Role: Primary RF transceiver handling OOK-modulated burst transmissions at 433 MHz with 19.2 kBaud, leveraging AFC to maintain lock across temperature swings. Use Value: –109 dBm sensitivity ensures reliable reception at edge-of-range; programmable output power (+5 dBm typical) balances range vs. battery life. |
Use Scenario: Door/window sensors and motion detectors sending encrypted alarm triggers to central hub in 868 MHz SRD band. IC Role / Device Role / Timing Role: Low-latency FSK transceiver with 4 Baud data latency in NRZ mode, supporting rapid event reporting under strict duty-cycle constraints. Use Value: Integrated carrier sense enables listen-before-talk operation; RSSI-based signal strength monitoring aids installation validation. |
| Home Automation | Automotive TPMS |
Use Scenario: Wireless light switches and thermostat remotes operating in 868 MHz ISM band with intermittent user-initiated commands. IC Role / Device Role / Timing Role: Ultra-low-power transceiver with 19.9 mA RX current and fast wake-up from power-down via DIO-triggered sequencing. Use Value: Small QFN-32 footprint and minimal external components (no balun, no SAW) reduce PCB area and assembly cost in space-constrained enclosures. |
Use Scenario: Tire pressure sensors transmitting periodic readings at 433 MHz in harsh automotive under-hood environments (–40°C to +85°C). IC Role / Device Role / Timing Role: Robust narrowband transceiver with 7 dB noise figure and co-channel rejection (–11 dB) to withstand RF interference from ignition systems. Use Value: Guaranteed operation across full industrial temp range; spurious emission compliance ensures no interference with vehicle infotainment radios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar narrowband sub-GHz transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC1101-RTR | Wider frequency coverage (300–348/387–464/779–928 MHz), higher max data rate (600 kBaud), but lower sensitivity (–116 dBm @ 1.2 kBaud, not directly comparable to CC1021's 38.4 kHz filter case). | Preferred for multi-band deployments and higher-throughput sensor networks; less optimized for EN 300 220-compliant 50 kHz-channel systems. | Select CC1101-RTR when flexibility across global ISM bands or faster data rates outweighs regulatory narrowband optimization. |
| SI4432-B1B-FMR | Higher output power (+20 dBm), integrated PA, and better adjacent channel rejection (58 dB), but requires external crystal load capacitors and lacks native AFC. | Better suited for long-range point-to-point links where external filtering and manual frequency compensation are acceptable. | Choose SI4432-B1B-FMR when extended range (>1 km) or higher EIRP is mandatory and system-level AFC implementation is feasible. |
Compared with CC1021-RTR1, CC1101-RTR offers broader band agility at the cost of narrower regulatory alignment, while SI4432-B1B-FMR delivers higher RF output but shifts AFC and filtering complexity to the system designer-making CC1021-RTR1 optimal for certified, low-power, narrow-channel European SRD deployments.
Availability
CC1021-RTR1 is available at Aetrix Electronics and suitable for automatic meter reading (AMR), wireless security systems, home automation controllers, and automotive TPMS requiring stable component supply and long-term industrial lifecycle support.
Supply support for CC1021-RTR1 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 company specializing in analog, embedded processing, and connectivity technologies, with leadership in low-power RF ICs for industrial and IoT applications.
The CC1021-RTR1 belongs to TI's legacy sub-GHz transceiver product line designed specifically for narrowband, regulatory-compliant (EN 300 220/FCC Part 15) wireless systems operating in ISM/SRD bands with minimal external components.
FAQ
What is the primary RF function of the CC1021-RTR1?
The CC1021-RTR1 is a fully integrated UHF RF transceiver that performs both transmission and reception in narrowband ISM/SRD bands (402–470 MHz and 804–930 MHz). It implements direct-conversion receive architecture with I/Q demodulation, fractional-N PLL synthesis, and digital modulation/demodulation for OOK, FSK, and GFSK-making CC1021-RTR1 a self-contained RF front-end without requiring external mixers, filters, or modulators.
Does CC1021-RTR1 support FCC Part 15 and EN 300 220 compliance out of the box?
Yes, CC1021-RTR1 is designed to meet EN 300 220 Class 2 and FCC CFR47 Part 15 requirements when used with recommended reference circuits-including external antenna filtering for spurious emissions below 862 MHz. Measured radiated spurs are <–60 dBm (9 kHz–1 GHz), harmonics are ≤–50 dBc, and adjacent channel power is –46 dBc at 433 MHz-ensuring CC1021-RTR1 can achieve certification with proper layout and filtering.
What package type and pin count does CC1021-RTR1 use?
CC1021-RTR1 uses a 7.00 mm × 7.00 mm VQFNP-32 (very thin quad flat no-lead) package with 32 I/O terminals and an exposed thermal pad that must be soldered to a solid ground plane. Pin functions include SPI configuration (PSEL/PDI/PDO/PCLK), data interface (DIO/DCLK/LOCK), RF ports (RF_IN/RF_OUT), crystal connections (XOSC_Q1/XOSC_Q2), and analog control signals (VC/CHP_OUT/R_BIAS).
Can CC1021-RTR1 operate with an external crystal oscillator or only internal?
CC1021-RTR1 supports both external parallel-resonant crystals (4.9152–19.6608 MHz) and full-swing digital or sine-wave external clock sources applied to XOSC_Q1. Crystal operation requires loading capacitors (12–22 pF depending on frequency); external clock mode is enabled by setting XOSC_BYPASS = 1 in the INTERFACE register-giving designers flexibility to optimize for start-up time, phase noise, or board-level clock sharing in CC1021-RTR1-based systems.
Is CC1021-RTR1 still recommended for new designs?
No-CC1021-RTR1 is marked "Not Recommended for New Designs" (NRND) by Texas Instruments as of the November 2018 revision of SWRS045F. While fully qualified and supported for existing production, TI recommends migration to newer platforms like CC1310 or CC1350 for new projects due to enhanced integration, lower power, and longer-term availability. CC1021-RTR1 remains viable for legacy AMR, security, and industrial maintenance programs.
CC1021-RTR1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- TxRx Only
- RF Family/Standard:
- General ISM < 1GHz
- Protocol:
- -
- Modulation:
- FSK, GFSK, OOK
- Frequency:
- 402MHz ~ 470MHz, 804MHz ~ 960MHz
- Data Rate (Max):
- 153.6kBaud
- Power - Output:
- 10dBm
- Sensitivity:
- -109dBm
- Memory Size:
- -
- Serial Interfaces:
- SPI, UART
- GPIO:
- 1
- Voltage - Supply:
- 2.3V ~ 3.6V
- Current - Receiving:
- 19.9mA
- Current - Transmitting:
- 12.3mA ~ 27.1mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-QFN (7x7)
CC1021-RTR1 FAQ
1.How can I place an order for CC1021-RTR1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CC1021-RTR1 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 CC1021-RTR1 reliable?
The price and inventory of CC1021-RTR1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CC1021-RTR1 is usually 5 days.
3.What payment methods are accepted for CC1021-RTR1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CC1021-RTR1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CC1021-RTR1?
CC1021-RTR1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CC1021-RTR1 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 CC1021-RTR1?
For technical support, including CC1021-RTR1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CC1021-RTR1 requirements.
6.How does Aetrix verify that CC1021-RTR1 is sourced from the original manufacturer or authorized distributors?
All CC1021-RTR1 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 CC1021-RTR1 meets industry standards.
7.What is the process for return or replacement of CC1021-RTR1?
All CC1021-RTR1 units undergo pre-shipment inspection (PSI). If there is an issue with CC1021-RTR1, 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 CC1021-RTR1 part is unused and in its original packaging.
Return procedure for CC1021-RTR1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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