CC115LRGPT - Sub-1GHz RF Transmitter 12dBm | TI
MPN: CC115LRGPT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.29 | $3.29 |
| 10 | $2.97 | $29.70 |
| 100 | $2.68 | $268.00 |
| 500 | $2.44 | $1,220.00 |
| 1,000 | $2.21 | $2,210.00 |
CC115LRGPT Overview
A sub-1 GHz RF transmitter is a wireless integrated circuit that generates modulated RF carriers for low-data-rate, long-range links. Within the radio hierarchy, it sits below full transceivers (no receive path) and above pure RF front ends, forming part of a broader power-management and connectivity ecosystem alongside microcontrollers and antenna matching networks. Sub-1 GHz links favor range and penetration over bandwidth, making them the backbone of sensor networks and remote-control systems.
Key features include a cost-optimized architecture derived from the popular CC1101 RF transceiver with identical RF performance characteristics, support for both asynchronous and synchronous serial transmit modes for backwards compatibility with existing radio protocols, and a compact QLP 4x4 mm 20-pin footprint that suits space-constrained designs.
Technically, the CC115L integrates a complete transmit chain: a fractional-N synthesizer, programmable frequency synthesizer control via an SPI-compatible interface, and a power amplifier with programmable output power up to 12 dBm. The device is suited for systems targeting compliance with EN 300 220 (Europe) and FCC CFR Part 15 (US) per the TI product page.
Typical applications include low-cost wireless sensor nodes, remote keyless entry transmitters, and one-way telemetry links, where pairing the CC115L transmitter with a CC113L value line receiver enables a complete low-cost bidirectional RF link.
When designing with the CC115LRGPT, follow the TI reference designs for RF matching network components and reference oscillator layout; supply voltage is 2.5V to 3.3V per distributor data, and the exposed pad must be soldered to a solid ground plane for RF performance.
This page synthesizes distributor availability, drop-in alternatives, and practical design guidance beyond what the manufacturer datasheet provides.
Drop-in alternatives for CC115LRGPT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CC115LRGPT (same form factor and footprint) — differing in Package, Frequency Bands, Product Type, Applications, Frequency Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CC115LRTKT
✅ Drop-In📋 Reference alternative (not in catalog)
CC110LRGPT
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →CC113LRGPR
✅ Drop-In✓ In Stock
$0.36 / Unit
View Datasheet →CC1101RGPR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.45 / Unit
View Datasheet →SPIRIT1QTR
✅ Drop-In📋 Reference alternative (not in catalog)
CC115LRGPT Specifications
| Product Type | Sub-1 GHz RF Transmitter |
| Frequency Bands | 315 MHz, 433 MHz, 868 MHz, 915 MHz |
| Frequency Range | 300-348, 387-464, 779-928 MHz |
| Modulation | FSK, GFSK, OOK |
| Maximum Output Power | 12 dBm |
| Maximum Data Rate | 600 kbps |
| Supply Voltage | 2.5 V to 3.3 V |
| Antenna Type | PCB, Surface Mount Antenna |
| Applications | ISM, SRD |
| Serial Interface | SPI-compatible, asynchronous and synchronous serial transmit mode |
| Operating Temperature | -40C to +85C |
| Package | 20-VFQFN Exposed Pad (RGP), 4x4 mm |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Product Status | Active |
| Regulatory Targets | EN 300 220 (Europe), FCC CFR Part 15 (US) |
| Receiving Part (paired link) | CC113L |
CC115LRGPT Pin Configuration
| Pin 1 | SCLK — SPI clock input |
| Pin 2 | SO — SPI data output (GDO1) |
| Pin 3 | GDO2 — General purpose digital output 2 / FIFO status |
| Pin 4 | DVDD — Digital power supply, 2.5V to 3.3V |
| Pin 5 | DCPL — Power regulator decoupling capacitor |
| Pin 6 | GDO0 — General purpose digital output / serial data input in asynchronous mode |
| Pin 7 | XOSC_Q2 — Crystal oscillator pin 2 |
| Pin 8 | AVDD — Analog power supply |
| Pin 9 | XOSC_Q1 — Crystal oscillator pin 1 |
| Pin 10 | GND — Ground |
| Pin 11 | RF_N — Negative RF input/output to balanced RF port |
| Pin 12 | RF_P — Positive RF input/output to balanced RF port |
| Pin 13 | AVDD — Analog power supply |
| Pin 14 | AVDD — Analog power supply |
| Pin 15 | GND — Ground |
| Pin 16 | GND — Ground |
| Pin 17 | R_BIAS — External reference resistor for internal bias |
| Pin 18 | SI — SPI data input |
| Pin 19 | CSn — SPI chip select, active low |
| Pin 20 | RES — Reset, active low |
Typical Applications
CC115LRGPT is suitable for 6 applications: Wireless Sensor Networks, Remote Keyless Entry (RKE), Smart Metering and Utility Telemetry, Home Automation and Security Sensors, Industrial Remote Control and Telemetry, Low-Cost IoT Beacons and Asset Tags.
Wireless Sensor Networks
The CC115LRGPT fits battery-powered sensor nodes that report readings to a central gateway over a sub-1 GHz link. Its 12 dBm output power at 433 MHz or 868 MHz penetrates walls and foliage far better than 2.4 GHz radios, and OOK/GFSK modes at low data rates maximize link budget for multi-hundred-meter outdoor range. The transmitter-only architecture lowers cost and sleep-mode design complexity in one-way telemetry nodes. Host MCUs configure frequency, power, and packet format over the SPI interface, and the 600 kbps capability accommodates burst uploads when a node batches readings. Board designers should follow the TI reference design matching network for the selected band to preserve output power and harmonic compliance.
Recommended
Remote Keyless Entry (RKE)
Car keys, garage door openers, and building access fobs benefit directly from the CC115LRGPT's combination of 315 MHz and 433 MHz band support, 12 dBm output, and rolling-code-friendly 600 kbps burst rate. OOK mode keeps modulation simple for maximum range at minimal current, while GFSK at higher data rates shortens on-air time to conserve the fob's coin cell. The compact 4x4 mm VQFN package fits inside slim key shells, and the value line pricing suits high-volume consumer fobs. Because the CC115L is based on the CC1101 with identical RF performance, designers can reuse proven CC1101 RKE firmware and regulatory test data with a transmitter-only bill of materials.
Recommended
Smart Metering and Utility Telemetry
Utility meters and sub-metering hubs in Europe and Asia commonly use 433 MHz or 868 MHz SRD links for automated meter reading. The CC115LRGPT covers the 387-464 MHz and 779-928 MHz bands needed for these regional deployments and targets EN 300 220 and FCC CFR Part 15 compliance per TI. Its deterministic packet timing from the synchronous serial transmit mode simplifies frequency-hopping or Listen-Before-Talk style protocol implementations. The 12 dBm output supports basement-to-street propagation challenges, and the cost-optimized value line position suits meters produced in millions of units. Pair with a CC113L-based concentrator receiver for a complete low-cost metering network.
Recommended
Home Automation and Security Sensors
Door/window contacts, PIR motion sensors, and smoke alarms transmit short alarm or status frames, which is exactly the one-way traffic pattern the CC115LRGPT is optimized for. At 433 MHz with 12 dBm, signals traverse multiple walls in residential environments, and OOK modulation at low data rates yields the highest sensitivity at the CC113L receiver end. The SPI interface permits per-device frequency offsets to reduce coexistence collisions among dense sensor deployments. Sleep current and fast startup of the CC1101-derived synthesizer allow frequent heartbeat transmissions while preserving battery life measured in years, and the 4x4 mm package fits the slim plastic housings typical of security sensors.
Recommended
Industrial Remote Control and Telemetry
Crane controllers, winch remote handsets, and machine status transmitters use sub-1 GHz links for reliable, low-latency command channels in electrically noisy plants. The CC115LRGPT's 12 dBm output and 315/433 MHz operation resist interference from motors and welders far better than 2.4 GHz radios, and GFSK at moderate data rates provides robustness with low latency for command frames. The device targets EN 300 220 and FCC Part 15, easing certification of industrial SRD equipment in both major markets. Its transmitter-only cost profile benefits handsets produced at scale, while the synchronous serial mode supports deterministic, back-to-back frame transmission required by safety-rated remote control protocols.
Recommended
Low-Cost IoT Beacons and Asset Tags
Asset tracking tags that periodically announce presence do not need a receiver, making the transmitter-only CC115LRGPT an ideal, cost-minimized choice. A tag can wake on schedule, configure the 433 MHz or 868 MHz channel via SPI, burst a short ID frame at up to 600 kbps to minimize airtime and energy, and return to sleep. At 12 dBm the transmission reaches ceiling-mounted CC113L receivers across large warehouses, and multi-channel hopping configured in firmware mitigates congestion from dense tag populations. The value line price point and Tape & Reel packaging support fully automated assembly of tags in the volumes typical of logistics deployments.
Recommended
Recommended Products Summary
Engineering reference data for CC115LRGPT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CC115LRTKT | CC110LRGPT | CC113LRGPR | SPIRIT1QTR |
|---|---|---|---|---|---|
| Package | VQFN-20 (RGP) 4x4 mm Exposed Pad | VQFN-20 (RGP) 4x4 mm - same | VQFN-20 (RGP) 4x4 mm - same | VQFN-20 (RGP) 4x4 mm - same | QFN 4x4 mm - comparable |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics |
| Device Function | Transmitter only | Transmitter only | Transceiver (TX+RX) | Receiver only | Transceiver (TX+RX) |
| Modulation | FSK, GFSK, OOK | FSK, GFSK, OOK | FSK, GFSK, OOK, MSK | FSK, GFSK, OOK, MSK (RX) | FSK, GFSK, OOK |
| Frequency Bands | 300-348, 387-464, 779-928 MHz | Same bands | Same bands | Same bands | Sub-1 GHz ISM/SRD |
Key Differentiators
- Lowest cost per link node (vs CC110LRGPT)
- CC1101-proven RF silicon (vs SPIRIT1QTR)
- Complete value line link pairing (vs CC113LRGPR)
Design Notes
Solder the exposed pad of the VQFN-20 (RGP) package to a continuous ground plane with multiple thermal vias - it is the main RF and thermal ground return of the CC115LRGPT. Place the 26 MHz (or band-appropriate) crystal within a few millimeters of XOSC_Q1/XOSC_Q2 with short traces and follow the TI CC115L datasheet load-capacitance guidance. Copy the band-specific matching network (RF_P/RF_N to single-ended antenna) directly from the TI reference design for your target band to preserve output power and harmonic performance.
Supply the CC115LRGPT from a clean 2.5 V to 3.3 V rail. Decouple DVDD, each AVDD pin, and DCPL with the capacitors specified in the TI reference design, placed as close to the pins as possible; the DCPL pin decouples an internal regulator whose noise directly affects synthesizer phase noise. Sequence power with RES held low until the supply is stable. Estimated: at 12 dBm output the transmit current is in the tens of mA range (see TI datasheet current consumption table for your band and power setting), so size the regulator and series resistance accordingly.
The CC115L is transmitter only - firmware written for CC1101/CC110L transceivers will fail on RX-related strobes and register settings, so strip receive configuration when porting code. Verify crystal tolerance because the value line has no on-chip compensation for PA mismatch: a mistuned reference oscillator shifts the carrier and can break EN 300 220 / FCC Part 15 mask compliance. Do not leave GDO0 floating when used as async serial data input, and always validate antenna VSWR on the actual PCB, not just the reference board.
Compliance Information
Device is suited for systems targeting EN 300 220 (Europe) and FCC CFR Part 15 (US) per the TI product page. Environmental compliance data (RoHS/REACH) not present in provided web data - verify on TI product page.
