CC115LRGPR - Sub-1GHz RF Transmitter 12dBm | Texas Instruments
N.º de pieza: CC115LRGPR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.07 | $1,07 |
| 10 | $0.98 | $9,80 |
| 100 | $0.88 | $88,00 |
| 500 | $0.79 | $395,00 |
| 1.000 | $0.71 | $710,00 |
CC115LRGPR Descripción general
A sub-1 GHz RF transmitter is a single-chip wireless device that converts baseband data into a modulated RF carrier for license-free industrial, scientific, and medical (ISM) or short-range device (SRD) bands. Within the wireless connectivity hierarchy, it sits below full transceivers (which add a receive path) and above complete modules, forming the transmit half of a low-cost RF link. Texas Instruments designed the CC115L value line transmitter to pair with the CC113L value line receiver, enabling a bidirectional-capable but cost-optimized radio system.
Key features include RF performance identical to the popular CC1101 RF transceiver, 12 dBm maximum output power for range-critical links, flexible FSK/GFSK/OOK modulation, and data rates up to 600 kbps. A fast wake-to-transmit latency of approximately 240 microseconds supports aggressive duty-cycling for battery-powered nodes. The device requires minimal external components: only a crystal, a few decoupling capacitors, and a simple antenna-matching network.
Technically, the CC115L shares its radio architecture and register map with the CC1101, which means SmartRF Studio configuration files and RF register settings developed for CC1101 transmit chains port directly to the CC115L. The standard SPI interface (SCLK, SI, SO, CSn) connects to virtually any low-cost microcontroller, and packet-oriented data FIFOs offload the host MCU from bit-level timing. TX-only operation reduces die area and cost compared with the CC1101 transceiver.
Typical applications include 433 MHz and 868/915 MHz remote controls and keyless entry, wireless alarm and security sensors, sub-1 GHz IoT sensor nodes for smart metering, and industrial telemetry where the 12 dBm output extends link range through building structures. According to Texas Instruments, the CC115L is EN 300 220 and FCC Part 15-friendly for SRD system designs.
Design consideration: RF matching networks are band-specific; use TI reference designs (e.g., the 433 MHz and 868/915 MHz matching networks in the CC115L datasheet) and place the exposed ground pad on a solid ground plane with multiple vias for RF ground integrity and thermal dissipation.
This page synthesizes distributor pricing, drop-in alternative analysis, pinout data, and practical RF layout guidance not found together in the manufacturer datasheet, with pricing verified as of 2026-10-19.
Alternativas directas para CC115LRGPR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con CC115LRGPR (mismo factor de forma y huella) — difiere en Package, Frequency Bands, Modulation Formats, Operating Temperature, Product Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
CC1101RGPR
✅ Sustitución directa✓ En stock
$4.45 / unidad
Ver hoja de datos →CC110LRGPR
✅ Sustitución directa✓ En stock
$0.88 / unidad
Ver hoja de datos →CC115LRGPR Especificaciones
| Product Type | Sub-1 GHz RF Transmitter |
| Frequency Bands | 300-348 MHz, 387-464 MHz, 779-928 MHz |
| Typical ISM Bands | 315 MHz, 433 MHz, 868 MHz, 915 MHz |
| Modulation Formats | FSK, GFSK, OOK |
| Maximum Output Power | 12 dBm |
| Maximum Data Rate | 600 kbps |
| RF Architecture | Based on CC1101 transceiver, TX-only |
| Wake-to-TX Latency | Approx. 240 us |
| Host Interface | SPI (SCLK, SI, SO, CSn) |
| Encapsulado | 20-VQFN (RGP) Exposed Pad |
| Recuento de pines | 20 |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40C to +85C |
| Receiver | None (pair with CC113L receiver) |
| Antenna | Differential RF_N / RF_P, PCB or SMD antenna |
| Compliance References | EN 300 220, FCC Part 15 (system-level design) |
Configuración de pines de CC115LRGPR
| Pin 1 | SCLK — SPI clock input from host MCU |
| Pin 2 | SO (GDO1) — SPI data output (configurable digital output GDO1) |
| Pin 3 | GDO2 — Configurable digital output (packet status / clock) |
| Pin 4 | DVDD — Digital power supply, 1.8 V-3.6 V nominal (per datasheet family) |
| Pin 5 | DCOUPL — Power regulator decoupling capacitor connection |
| Pin 6 | XOSC_Q1 — Crystal oscillator input |
| Pin 7 | AVDD — Analog power supply |
| Pin 8 | XOSC_Q2 — Crystal oscillator output |
| Pin 9 | AVDD — Analog power supply |
| Pin 10 | GND — Ground |
| Pin 11 | RF_N — Negative RF input/output to matching network/antenna |
| Pin 12 | RF_P — Positive RF input/output to matching network/antenna |
| Pin 13 | AVDD — Analog power supply |
| Pin 14 | AVDD — Analog power supply |
| Pin 15 | GND — Ground |
| Pin 16 | RESETn — Active-low digital reset input |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | SI — SPI data input from host MCU |
| Pin 19 | CSn — SPI chip select, active low |
| Pin 20 | GND — Ground |
Aplicaciones típicas
CC115LRGPR es adecuado para 6 aplicacións: Wireless Remote Controls and Keyless Entry, Wireless Alarm and Security Sensors, Smart Metering and Utility Telemetry, Industrial Telemetry and SCADA Sensor Nodes, Smart Home and IoT Sensor Nodes, Wireless Toys and Consumer Electronics.
Wireless Remote Controls and Keyless Entry
The CC115LRGPR is a natural fit for 315/433 MHz remote controls and keyless entry transmitters, where a coin-cell or small battery must last years and bill of materials cost is paramount. Its 12 dBm output power provides the link margin needed to operate through car bodies and building walls, while FSK/GFSK/OOK modulation matches the legacy receivers deployed in billions of such systems. The approximately 240 us wake-to-transmit latency means a button press triggers an immediate burst without visible delay, and the TX-only die keeps unit cost at roughly one dollar. TI's CC1101-compatible register map means rolling-code encoders and standard RKE protocol stacks port directly.
Recomendado
Wireless Alarm and Security Sensors
Battery-powered door/window contacts, PIR motion detectors, and smoke alarm modules benefit from the CC115LRGPR's low duty-cycle operation: the radio sleeps in shutdown, wakes in about 240 us, transmits an alarm frame, and powers down again, keeping average consumption in the microamp range. The 433/868 MHz bands penetrate residential and commercial construction far better than 2.4 GHz, ensuring alarms reach the panel through multiple walls. The 12 dBm maximum output covers large premises, and the packet FIFO handles message formatting without host MCU bit-banging. Pair the transmitter nodes with the CC113L-based central receiver for a complete, cost-optimized alarm link per TI's value line system concept.
Recomendado
Smart Metering and Utility Telemetry
Water, gas, and heat meters transmit consumption readings periodically over 470/868/915 MHz, and the CC115LRGPR covers these bands with its 779-928 MHz range. Its CC1101-identical RF performance supports the long link budgets and deep-indoor propagation that meter installations demand - meters are often in basements or buried pits. The SPI interface connects to any metering MCU, and OOK mode matches legacy pulse-counting receivers still common in utility networks. At roughly $0.71 per unit in 1000-piece volume as of 2026-10-19, it meets the aggressive cost targets of high-volume meter deployments while EN 300 220-aligned operation simplifies regional certification.
Recomendado
Industrial Telemetry and SCADA Sensor Nodes
In factories and utility substations, the CC115LRGPR transmits tank levels, temperature, and status data from unpowered or hard-to-wire locations over 433/868/915 MHz. The 600 kbps data rate accommodates multi-point telemetry frames, while the -40C to +85C operating range survives outdoor enclosures and unheated industrial spaces. Sub-1 GHz propagation tolerates the metal racking, concrete walls, and machinery interference that defeat 2.4 GHz links, and 12 dBm output extends range to cover plant perimeters from a single gateway. TI reference matching networks for each band reduce RF design risk, and the exposed-pad VQFN provides a solid RF ground for repeatable production tuning.
Recomendado
Smart Home and IoT Sensor Nodes
Sub-1 GHz IoT nodes for smart home sensors - occupancy, leak, air quality - use the CC115LRGPR to avoid the congestion and range limits of 2.4 GHz Wi-Fi/Bluetooth bands. The value line concept pairs it with the CC113L receiver at the hub, giving a two-chip proprietary network with hardware cost well below SoC transceiver solutions. With only a crystal, decoupling caps, and a simple antenna match required externally, PCB area stays minimal for retrofit sensor housings. TI's SmartRF Studio configuration flow, shared with the CC1101, lets firmware teams reuse validated register profiles for 868 MHz and 915 MHz regional variants, shortening time to market.
Recomendado
Wireless Toys and Consumer Electronics
RC toys, wireless peripherals, and interactive consumer products leverage the CC115LRGPR's one-dollar-class cost, simple SPI control from a toy-grade MCU, and responsive approximately 240 us wake-to-transmit time for real-time control feel. The 315/433 MHz bands used by toy remote controls worldwide are fully covered, and 12 dBm gives backyard-scale range for outdoor toys. FSK/GFSK modulation supports low-latency proportional control channels at 38.4-250 kbps, while the packet FIFO relieves the host MCU of protocol timing. Because the register map matches the CC1101, firmware engineers can reuse the large ecosystem of CC1101 toy-radio codebases and matching network designs.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para CC115LRGPR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | CC1101RGPR | CC110LRGPR |
|---|---|---|---|
| Package | 20-VQFN (RGP) Exposed Pad | 20-VQFN (RGP) Exposed Pad - same | 20-VQFN (RGP) Exposed Pad - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Device Type | Transmitter (TX only) | Transceiver (TX + RX) | Transceiver (TX + RX) |
| Frequency Bands | 300-348 / 387-464 / 779-928 MHz | 300-348 / 387-464 / 779-928 MHz | 300-348 / 387-464 / 779-928 MHz |
| Max Output Power | 12 dBm | 12 dBm | 12 dBm |
| Max Data Rate | 600 kbps | 600 kbps | 500 kbps (value line) |
| Modulation | FSK, GFSK, OOK | FSK, GFSK, OOK, MSK | FSK, GFSK, OOK |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
| Relative Cost | Lowest (TX-only die) | Higher (full transceiver) | Moderate (value-line transceiver) |
Diferenciadores clave
- Lowest-cost TX-only die with full CC1101 RF performance (frente a CC1101RGPR)
- Pin-compatible upgrade path to a transceiver (frente a CC110LRGPR)
- Fast wake-to-transmit latency (frente a CC1101RGPR)
Notas de diseño
Solder the exposed pad of the 20-VQFN (RGP) to a continuous ground plane with an array of at least 9-16 vias directly under the pad. This pad is the primary RF ground return for the internal PA and LNA-free TX chain; a poor ground connection degrades output power, harmonic performance, and consistency across production. Follow the TI reference layout for CC1101/CC115L, which the CC115L datasheet reproduces, including component placement for the DCoupling and XOSC decoupling capacitors.
The differential RF_N/RF_P output requires a band-specific balun/matching network - TI provides validated reference designs for 315 MHz, 433 MHz, 868 MHz, and 915 MHz in the datasheet. Do not reuse a matching network across bands; harmonics and output power will fail certification. Keep the RF trace short (<10 mm), route over a solid ground, and add series DC-blocking per the reference design. Verify FCC Part 15 / EN 300 220 conducted and radiated spurious emissions on a real prototype before release.
Decouple each AVDD/DVDD pin with 100 nF ceramic capacitors placed within 2 mm of the pin, plus bulk 4.7 uF near the supply entry. The internal PA draws supply-current bursts during transmit; inadequate decoupling causes spectral splatter and packet errors. Estimated: at 12 dBm output, TX current is on the order of tens of mA (per CC1101-family figures), so size the LDO/buck accordingly and keep supply impedance low across the TX burst.
Use TI SmartRF Studio to generate register settings rather than hand-calculating frequency parameters - the CC1101 register map of the CC115L includes fractional-N synthesizer values that are error-prone to compute manually. Also remember the CC115L has no receiver: if your protocol requires ACKs, either pair with a CC113L-based hub that transmits on a separate channel/time slot, or switch to the pin-compatible CC1101RGPR transceiver before PCB release to avoid respins.
Información de cumplimiento
RoHS/REACH status not stated in the provided web data; confirm on the TI.com product page quality section. Radio system designs must comply with EN 300 220 / FCC Part 15 for the target region.
