CC1125RHBR - Sub-1GHz Narrowband RF Transceiver 16dBm | TI
MPN： CC1125RHBR ✓ 啟用中CC1125RHBR 概覽
An RF transceiver is an integrated circuit that combines a transmitter and a receiver sharing a single antenna interface and frequency synthesis path, forming the core of any half-duplex wireless link. Within the power management and connectivity hierarchy, the CC1125 belongs to the sub-1 GHz ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) radio family, sitting above simple RF front-end modules because it integrates the complete physical layer.
Key differentiating features include fully integrated IF filtering that eliminates costly external SAW filters, a high-performance narrowband architecture optimized for channels as tight as 12.5 kHz, very low-power and low-voltage operation, and an on-chip packet engine with CRC and address handling that offloads the host MCU. According to the TI product page, the device is designed for cost-effective wireless systems requiring long range and high link reliability.
Technically, the CC1125 uses a zero-IF receive architecture with integrated channel filters, a fractional-N synthesizer, and a programmable power amplifier reaching +16 dBm. The narrowband design maximizes spectral efficiency and interference rejection, which is the primary reason engineers select it over wideband FSK parts like the CC1101 family for professional telemetry and metering systems.
Typical applications include smart metering, industrial telemetry and SCADA links, professional wireless audio and intercom systems, alarm and security networks, and narrowband IoT backhaul, where the 200 kbps data rate and 16 dBm output extend link budgets well beyond wideband alternatives.
Design considerations: the exposed pad is the primary ground return and must be soldered to a solid ground plane with thermal vias, and RF matching networks must be band-specific per TI reference designs.
This page synthesizes distributor availability, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 CC1125RHBR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： CC1125RHBR （相同外形與佔位） — 差異在於 Product Type, Package, Integrated Filters, Frequency Bands, Modulation.
CC1125RHBT
✅ 直接替換聯絡詢價
查看資料表 →CC1125RHMR
✅ 直接替換📋 參考替代品（不在目錄中）
CC1120RHBR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →CC1121RHBR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →CC1125RHBR 規格
| Product Type | Single-chip RF transceiver (TxRx) |
| Frequency Band 1 | 164 MHz to 192 MHz |
| Frequency Band 2 | 274 MHz to 320 MHz |
| Frequency Band 3 | 410 MHz to 480 MHz |
| Frequency Band 4 | 820 MHz to 960 MHz |
| Max Output Power | 16 dBm |
| Max Data Rate | 200 kbps |
| Architecture | Narrowband, fully integrated filters (no external SAW/IF filters) |
| Intended Bands | ISM and SRD sub-1 GHz |
| 封裝 | 32-VFQFN with exposed pad |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 |
| RoHS 狀態 | Compliant |
CC1125RHBR 32-vfqfn with exposed pad 腳位配置指南
CC1125RHBR（32-vfqfn with exposed pad 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： CC1125RHBR.
請參閱 資料表 以查看完整腳位配置。
典型應用
CC1125RHBR 適用於 6 應用s: Smart Metering Networks, Industrial Telemetry and SCADA, Professional Wireless Audio and Intercom, Alarm and Security Systems, Narrowband IoT Backhaul, Wireless Remote Control and Access.
Smart Metering Networks
The CC1125RHBR is a strong fit for smart electricity, water, and gas metering because narrowband operation concentrates transmit energy into tight channels, maximizing range per watt in congested sub-1 GHz ISM bands. With 16 dBm output power and integrated channel filtering, meters achieve reliable links to data concentrators hundreds of meters away, even in dense urban multipath. The on-chip packet engine handles CRC and address filtering, offloading the meter's host MCU and reducing firmware complexity. The transceiver's low-power modes preserve multi-year battery life in water and gas meters, while the fully integrated filters eliminate external SAW components, reducing BOM cost across fleets of millions of units.
推薦
Industrial Telemetry and SCADA
In industrial telemetry, the CC1125RHBR links remote sensors, PLC nodes, and RTUs back to supervisory systems across factory floors and utility sites. Its 200 kbps data rate supports periodic process-variable reporting, while narrowband channels resist interference from welding equipment, variable-frequency drives, and other industrial noise sources. The 410-480 MHz band is widely licensed for such use in many regions. With 16 dBm output and high receiver selectivity, the part sustains links where wideband transceivers drop out, and its low-voltage operation integrates directly into standard 3.3 V industrial electronics without additional power conditioning.
推薦
Professional Wireless Audio and Intercom
Narrowband digital audio links such as wireless intercoms, in-ear monitoring, and tour-guide systems benefit from the CC1125RHBR's 164-192 MHz and 820-960 MHz coverage and its tight integrated filtering, which suppresses adjacent-channel interference in crowded venues. The 200 kbps data rate accommodates compressed digital audio streams with forward-error protection, and the fractional-N synthesizer supports precise channel assignment required for licensed professional audio operation. The high linearity and stable frequency synthesis minimize spurious emissions into the audio band, while TI's reference designs for band-specific matching reduce time to market for audio equipment manufacturers.
推薦
Alarm and Security Systems
Professional alarm panels, panic transmitters, and gate-control receivers use the CC1125RHBR in 433 MHz and 868 MHz SRD bands, where its narrowband selectivity prevents false alarms from adjacent-channel congestion. The 16 dBm output keeps perimeter sensors in contact across large sites, and the integrated packet engine's CRC detection ensures command authenticity at the link layer. Fast startup and low quiescent operation suit battery-powered door contacts and PIR detectors that must sleep for years. Because all filters are on-chip, security equipment makers keep receiver BOM cost low while meeting EN regional radio regulatory requirements for SRD operation.
推薦
Narrowband IoT Backhaul
For narrowband IoT deployments such as utility mesh networks and smart-city sensor backhaul, the CC1125RHBR provides the physical layer: its high-performance narrowband receiver pulls weak signals out of dense 868/915 MHz spectrum, and its 200 kbps rate aggregates many low-rate sensor payloads per hop. The zero-IF architecture with integrated channel filters reduces component count in compact gateway hardware, while the exposed-pad VFQFN-32 keeps the footprint small on multi-layer gateway boards. Designers pair it with an external front-end module for gateways needing extra transmit power or receive sensitivity beyond the 16 dBm baseline, using TI's documented front-end reference designs.
推薦
Wireless Remote Control and Access
Two-way remote controls, keyless entry receivers, and garage/gate access systems leverage the CC1125RHBR's sub-1 GHz bands and packet-level security support for rolling-code style protocols executed on the host MCU. The 200 kbps rate gives fast, low-latency command exchange with acknowledgement, improving perceived responsiveness versus legacy 2-5 kbps ASK systems, while narrowband reception dramatically cuts co-channel false triggering in parking structures. The low-power receive mode and integrated wakeup handling let receiver units idle economically, and the 32-VFQFN package allows compact receiver PCBs that fit within sealed actuator housings typical of access-control installations.
推薦
推薦產品摘要
工程參考資料，適用於 CC1125RHBR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | CC1125RHBT | CC1125RHMR | CC1120RHBR |
|---|---|---|---|---|
| Package | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad - same | 32-VFQFN Exposed Pad - same | 32-VFQFN Exposed Pad - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Integrated Filters (no SAW) | Yes | Yes | Yes | Yes |
| Narrowband Performance Tier | Ultra-high performance | Ultra-high performance (same die) | Ultra-high performance (same die) | High performance (lower selectivity) |
主要差異化特點
- Ultra-high-performance narrowband selectivity (對比CC1120RHBR)
- Fully integrated IF filtering (對比External-SAW architectures)
- Same-footprint performance/price ladder (對比CC1125RHBT)
設計說明
The exposed pad on the 32-VFQFN package is the primary RF ground and thermal path. Connect it to a solid ground plane through a grid of stitching vias (at least 9, per TI CC1125 reference design). Keep the 32 MHz crystal within 5 mm of its pins and guard it with ground. Follow the band-specific matching network in the CC1125 RF user guide exactly - changing matching component values without re-simulation degrades output power and harmonic performance.
Decouple each supply pin with 100 nF ceramics placed within 2 mm, plus a bulk 10 uF. During full +16 dBm transmit bursts, supply current peaks are significant; a locally placed bulk capacitor prevents supply droop that would show up as frequency error and degraded modulation. Estimated: at 16 dBm, PA current draw is on the order of tens of milliamps, so size the 3.3 V regulator with adequate burst headroom and low transient impedance.
Register configuration is not portable across CC112x family members - settings exported for CC1120 will not be optimal on CC1125. Always regenerate RF settings with TI SmartRF Studio for the exact chip and band. Also verify regional regulatory limits: 16 dBm is above the permitted ERP in some 868 MHz SRD sub-bands, so antenna gain and duty-cycle management must be checked per market before certification.
合規資訊
RoHS compliant per PartGenie compliance notes for CC1125RHBR. REACH, halogen-free, and conflict-minerals status not stated in verified data - confirm on TI compliance portal.
