Texas Instruments
CC1021RSSR - Narrowband FSK/OOK UHF Transceiver | TI
N.º de pieza: CC1021RSSR ✓ Activo
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32-pin VQFN (RSS) with exposed pad Package
402 MHz to 470 MHz Speed
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MOQ: 1 |
Precio actualizado: 2026-10-18
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CC1021RSSR Descripción general
The Texas Instruments CC1021RSSR is a true single-chip, low-power narrowband FSK/GFSK/OOK UHF RF transceiver operating in the 402 MHz to 470 MHz and 804 MHz to 960 MHz bands, supporting channel spacings of 50 kHz or higher, with a maximum data rate of 153.6 kBaud, packaged in a 32-pin VQFN (RSS) exposed-pad package rated from -40C to +85C.
A narrowband RF transceiver is a radio IC that transmits and receives digitally modulated data over a shared radio channel using narrow channels (here 50 kHz or more), maximizing spectral efficiency in congested license-free ISM/SRD bands. Within the system hierarchy, the CC1021 sits at the physical layer of a wireless link: it is a half-duplex transceiver - containing both a transmitter chain and a superheterodyne-style receiver chain - that pairs with an external MCU which configures it and feeds it data through its serial interface.
Key features include true single-chip integration (only the antenna matching network and crystal are external), multichannel operation with programmable channel spacing of 50 kHz or higher, three modulation schemes (FSK, GFSK, OOK), and very low power consumption aimed at battery-operated nodes. The supported data rate reaches 153.6 kBaud, sufficient for metering, alarm, and telemetry payloads. Output power is programmable, with -20 dBm listed among the supported output-power settings for short-range SRD compliance.
Technically, the CC1021 is fabricated in CMOS and integrates the complete frequency synthesis, modulation, demodulation, and baseband filtering functions on one die. It targets the 433, 868, 915, and 960 MHz ISM/SRD bands, making it suitable for regulatory environments in Europe, North America, and Asia. According to the TI datasheet (document SWRS045C), the device is optimized for very low voltage, very low power wireless applications.
Typical applications include Automatic Meter Reading (AMR) networks, wireless alarm and security systems, home automation, low-power telemetry, Remote Keyless Entry (RKE), Tire Pressure Monitoring Systems (TPMS), and general Short Range Device (SRD) links - all cases where narrowband channels and long battery life matter more than raw throughput.
Design consideration: because channel spacing is narrow (50 kHz class), crystal accuracy and proper frequency planning dominate link reliability; budget for crystal tolerance and use the datasheet frequency-programming registers rather than assuming fixed-band defaults.
This page synthesizes distributor availability data, datasheet-derived specifications, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, providing unique engineering value for sourcing and design decisions. Pricing and stock levels are quoted as of 2026-10-19 where available.
A narrowband RF transceiver is a radio IC that transmits and receives digitally modulated data over a shared radio channel using narrow channels (here 50 kHz or more), maximizing spectral efficiency in congested license-free ISM/SRD bands. Within the system hierarchy, the CC1021 sits at the physical layer of a wireless link: it is a half-duplex transceiver - containing both a transmitter chain and a superheterodyne-style receiver chain - that pairs with an external MCU which configures it and feeds it data through its serial interface.
Key features include true single-chip integration (only the antenna matching network and crystal are external), multichannel operation with programmable channel spacing of 50 kHz or higher, three modulation schemes (FSK, GFSK, OOK), and very low power consumption aimed at battery-operated nodes. The supported data rate reaches 153.6 kBaud, sufficient for metering, alarm, and telemetry payloads. Output power is programmable, with -20 dBm listed among the supported output-power settings for short-range SRD compliance.
Technically, the CC1021 is fabricated in CMOS and integrates the complete frequency synthesis, modulation, demodulation, and baseband filtering functions on one die. It targets the 433, 868, 915, and 960 MHz ISM/SRD bands, making it suitable for regulatory environments in Europe, North America, and Asia. According to the TI datasheet (document SWRS045C), the device is optimized for very low voltage, very low power wireless applications.
Typical applications include Automatic Meter Reading (AMR) networks, wireless alarm and security systems, home automation, low-power telemetry, Remote Keyless Entry (RKE), Tire Pressure Monitoring Systems (TPMS), and general Short Range Device (SRD) links - all cases where narrowband channels and long battery life matter more than raw throughput.
Design consideration: because channel spacing is narrow (50 kHz class), crystal accuracy and proper frequency planning dominate link reliability; budget for crystal tolerance and use the datasheet frequency-programming registers rather than assuming fixed-band defaults.
This page synthesizes distributor availability data, datasheet-derived specifications, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, providing unique engineering value for sourcing and design decisions. Pricing and stock levels are quoted as of 2026-10-19 where available.
Alternativas directas para CC1021RSSR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
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Solicitar alternativasCC1021RSSR Especificaciones
| Product Type | Single-chip narrowband UHF RF transceiver |
| Frequency Range (Low Band) | 402 MHz to 470 MHz |
| Frequency Range (High Band) | 804 MHz to 960 MHz |
| Modulation | FSK, GFSK, OOK |
| Maximum Data Rate | 153.6 kBaud |
| Channel Spacing | 50 kHz or higher |
| Output Power | -20 dBm (programmable) |
| ISM/SRD Bands Supported | 433, 868, 915, 960 MHz |
| Encapsulado | 32-pin VQFN (RSS) with exposed pad |
| Temperatura de funcionamiento | -40C to +85C |
| Technology | CMOS |
| Applications | AMR, ISM, RKE, SRD, TPMS |
| Tipo de montaje | Surface Mount |
Guía de configuración de pines de CC1021RSSR 32-pin vqfn (rss) with exposed pad
Configuración de pines para CC1021RSSR (encapsulado 32-pin vqfn (rss) with exposed pad). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para CC1021RSSR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
CC1021RSSR es adecuado para 3 aplicacións: Sistemas embebidos, Dispositivos IoT, Control industrial.
Sistemas embebidos
Procesamiento central en aplicaciones embebidas usando CC1021RSSR.
Dispositivos IoT
Dispositivos inteligentes conectados alimentados por CC1021RSSR.
Control industrial
Sistemas de automatización y control usando CC1021RSSR.
What frequency bands does the CC1021RSSR support?
The CC1021RSSR operates in two bands: 402 MHz to 470 MHz and 804 MHz to 960 MHz. According to the TI datasheet (SWRS045C), this coverage includes the 433, 868, 915, and 960 MHz ISM/SRD bands used worldwide for license-free low-power wireless links. Channel spacing is programmable at 50 kHz or higher, allowing multichannel narrowband operation.
What is the maximum data rate of CC1021RSSR?
The CC1021RSSR supports a maximum data rate of 153.6 kBaud. This is sufficient for typical narrowband applications such as Automatic Meter Reading, telemetry, and wireless alarm systems, where payloads are small and link reliability matters more than throughput. According to the TI datasheet, the data rate is programmable together with the modulation format (FSK, GFSK, or OOK).
What modulation schemes does the CC1021RSSR support?
The CC1021RSSR supports FSK, GFSK, and OOK modulation. FSK and GFSK provide better sensitivity for battery-powered links, while OOK simplifies receiver design and suits simple ASK-style SRD systems. According to distributor specifications (DigiKey, FindIC), the device is a multichannel CMOS transceiver designed for narrowband systems with channel spacings of 50 kHz or higher.
What is the difference between CC1021RSSR and CC1020RSSR?
The CC1021 is the low-power, lower-output-power variant of the CC1020 family; both are single-chip narrowband UHF transceivers in the same 32-pin VQFN (RSS) package with an identical serial configuration interface. The CC1021 targets very low power applications with programmable output power including -20 dBm settings, while the CC1020 offers higher transmit output power for longer range. Designers needing maximum link budget should check the CC1020; those maximizing battery life should stay with the CC1021.
CC1021RSSR vs CC2511F16RSP - which should I choose?
Neither is a drop-in replacement for the other: the CC1021RSSR is a sub-GHz narrowband transceiver (402-470 MHz / 804-960 MHz, 153.6 kBaud) in a 32-VQFN, while the CC2511F16RSP is a 2.4 GHz SoC combining the CC2500 radio with an 8051 MCU, up to 500 kBaud, and up to +1 dBm output power. Choose the CC1021 for sub-GHz narrowband ISM/SRD bands with superior range per milliwatt; choose the CC2511 when you want an integrated MCU and 2.4 GHz operation.
Is there a drop-in replacement for CC1021RSSR?
The closest drop-in option is the CC1020 in the same 32-pin VQFN (RSS) package, which is pin-compatible within the same CC102x single-chip narrowband transceiver family; the main difference is transmit output power class. Beyond that family, no widely published pin-compatible cross-brand substitute exists in the verified cross-reference sources - most competitors (such as the CC251x family) are different packages and bands. Verify any substitution against the CC1021 datasheet pinout before layout.
When should I choose the CC1021RSSR over a 2.4 GHz transceiver?
Choose the CC1021RSSR when your regulatory environment, range requirement, or existing infrastructure dictates sub-GHz ISM/SRD bands (433/868/915/960 MHz). Sub-GHz signals propagate and diffract better than 2.4 GHz, giving longer range per milliwatt - important for AMR meters buried in metal enclosures or TPMS nodes. Also choose it when narrow 50 kHz-class channels are needed to coexist in congested bands. Choose a 2.4 GHz part instead when you need higher data rates or a global antenna compromise.
Is the CC1021RSSR suitable for Automatic Meter Reading (AMR)?
Yes. AMR is explicitly listed among the CC1021 target applications in the TI datasheet (SWRS045C) and distributor listings. The narrowband 50 kHz channel spacing supports dense frequency planning across many meters, and the low-power CMOS design suits battery-powered meter nodes. The 153.6 kBaud maximum data rate covers typical meter-reading payloads, and the 868 MHz (Europe) and 915 MHz (North America) bands are within the supported 804-960 MHz range.
Is the CC1021RSSR suitable for TPMS?
Yes, TPMS (Tire Pressure Monitoring Systems) is listed among the CC1021 applications in distributor specification data. The 433 MHz band covered by the 402-470 MHz range is the standard TPMS frequency in Europe and Asia, and the very low power operation suits coin-cell or energy-harvesting sensor nodes inside tires. Note that transmit output power settings such as -20 dBm allow compliance tuning for SRD regulations.
Where can I download the CC1021RSSR datasheet PDF?
The CC1021 datasheet PDF is available from the Texas Instruments product page at ti.com (document SWRS045C, titled CC1021 Single Chip Low Power RF Transceiver for Narrowband Systems). Third-party mirrors such as Alldatasheet and Datasheet.Support also host it, but TI.com is the authoritative source for the latest revision. The datasheet covers register programming, frequency planning, and application circuits for the 32-pin VQFN (RSS) package.
What package does the CC1021RSSR come in?
The CC1021RSSR is supplied in a 32-pin VQFN (RSS) package with an exposed pad, per the TI product page and DigiKey listing. The exposed pad should be soldered to the PCB ground plane for grounding and thermal performance. The suffix RSS denotes the VQFN-32 body, and the R in RSSR indicates tape-and-reel packaging. The operating temperature range for this package is -40C to +85C.
How much does CC1021RSSR cost and where can I buy it?
Pricing for the CC1021RSSR is not published in the verified data on this page; request a quote for current pricing and availability as of 2026-10-19. The part is distributed through major channels including DigiKey, Mouser, and IC-Components, with Octopart listing 10 distributors for price comparison. Because this is a mature narrowband transceiver, availability can vary - always confirm stock and lead time with the distributor before scheduling production.
Is CC1021RSSR in stock and what is the lead time?
Stock status for the CC1021RSSR is not fixed in the verified data on this page; DigiKey and Mouser listings exist, and Octopart aggregates availability from 10 distributors as of the last check (2026-10-19). Lead time depends on the distributor and order quantity. Submit a quote request through XAIPART for a confirmed stock position and lead time rather than relying on cached distributor pages.
What external components does the CC1021RSSR need?
The CC1021 is a true single-chip transceiver: the main external components are a crystal for the frequency synthesizer, an antenna matching network, decoupling capacitors, and loop-filter components for the PLL. According to the TI datasheet (SWRS045C), this minimal external count is a key selling point for cost-sensitive AMR, RKE, and SRD designs. Exact component values depend on the selected band and channel spacing, so follow the datasheet application section for your frequency plan.
What are the key specifications of CC1021RSSR that engineers should know?
The CC1021RSSR is a single-chip CMOS narrowband UHF transceiver covering 402-470 MHz and 804-960 MHz (433/868/915/960 MHz ISM/SRD bands), with FSK/GFSK/OOK modulation, up to 153.6 kBaud, channel spacing of 50 kHz or higher, programmable output power including -20 dBm, in a 32-pin VQFN exposed-pad package rated -40C to +85C. Applications per the datasheet include AMR, RKE, SRD, TPMS, wireless alarms, home automation, and low-power telemetry.
What is the best cross-brand equivalent for CC1021RSSR?
No verified pin-compatible cross-brand equivalent for the CC1021RSSR was found in the cross-reference sources checked (DigiKey and TI cross-reference tools return only parametric matches, not drop-in substitutes). Sub-GHz narrowband transceivers from other vendors exist in different packages and would require PCB redesign. Within TI, the same-family CC1020 (32-VQFN RSS) is the closest substitute with identical footprint. Any cross-brand move requires a layout and firmware redesign, so plan accordingly.
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