CC1120RHBT - Sub-1GHz RF Transceiver, +16dBm | Texas Instruments
MPN: CC1120RHBT ✓ Hoạt độngCC1120RHBT Tóm tắt
A narrowband RF transceiver is an integrated radio chip that transmits and receives wireless data in narrow frequency channels, typically within the industrial, scientific, and medical (ISM) and short range device (SRD) bands. Within the wireless system hierarchy, a transceiver sits between the host microcontroller and the antenna, combining a low-IF or zero-IF receiver, a fractional-N synthesizer, and a power amplifier into a single power management and connectivity IC.
Key differentiating features include fully integrated channel filters that remove the need for costly external SAW and IF filters, exceptionally high receiver selectivity for operation in dense RF environments, and link budgets that support multi-kilometre range at narrow channel spacing. The device supports Wireless M-Bus (S, C, and N modes) and proprietary protocols, and offers low-power and low-voltage operation for cost-effective wireless systems.
Architecturally, the CC1120 integrates a low-IF receiver with high dynamic range, programmable narrowband filters, and an enhanced FIFO-based packet engine with an extended SPI interface for radio control. The integrated fractional-N PLL synthesizer covers all four frequency bands without external VCO components, and RSSI and link-quality indicators support channel assessment for frequency-agile network stacks.
Typical applications include smart metering (Wireless M-Bus), industrial remote control and telemetry, 169/433/868/915 MHz ISM sensor networks, and home/building automation where strong blocking performance and long range are required.
When designing, note that narrowband operation demands accurate crystal references; a low-phase-noise TCXO is often warranted for channels narrower than 12.5 kHz.
This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet, based on data verified as of 2026-10-19.
Bộ thay thế dễ dàng lắp đặt cho CC1120RHBT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với CC1120RHBT (cùng hình factor và footprint) — khác nhau ở Package, Integrated Filters, Modulation, Product Type, RF Family / Standard.
CC1120RHBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →CC1121RHBT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →CC1125RHBT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →CC1120RHMR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CC1120RHBT Thông số kỹ thuật
| RF Band | General ISM < 1 GHz |
| Frequency Range | 164 MHz to 192 MHz, 274 MHz to 320 MHz, 410 MHz to 480 MHz, 820 MHz to 960 MHz |
| Modulation | 2FSK, GFSK, OOK |
| Maximum Output Power | +16 dBm |
| Receiver Sensitivity | -123 dBm (low data rate) |
| Maximum Data Rate | 200 kbps |
| Protocol Support | Proprietary, Wireless M-Bus (S, C, N mode) |
| Hộp | 32-VFQFN Exposed Pad (RHB) |
| Kiểu lắp đặt | Surface Mount |
| Giao diện | SPI |
| Điện áp cung cấp | 2 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C |
| Trạng thái RoHS | Compliant |
| Built-in MCU | No (transceiver, host controlled) |
| RF Family / Standard | General ISM < 1GHz |
| External Filters | Not required (integrated channel filters) |
Hướng dẫn cấu hình chân CC1120RHBT 32-vfqfn exposed pad (rhb)
Cấu hình chân cho CC1120RHBT (32-vfqfn exposed pad (rhb) gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho CC1120RHBT.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
CC1120RHBT phù hợp cho 6 Áp dụngs: Smart Metering (Wireless M-Bus), Industrial Telemetry and Remote Control, 169 MHz / 433 / 868 / 915 MHz Sensor Networks, Home and Building Automation, Alarm and Security Systems, Long-Range Narrowband Data Links.
Smart Metering (Wireless M-Bus)
The CC1120RHBT is purpose-built for Wireless M-Bus smart metering in S, C, and N modes. Its integrated narrowband channel filters deliver the high selectivity required to operate in congested 169 MHz and 868 MHz metering bands, while receiver sensitivity down to -123 dBm provides the link budget needed to reach meters in basements and metallic enclosures. In a typical meter node, the CC1120 sits behind the meter MCU over SPI, with the differential RF_N/RF_P outputs feeding a discrete or integrated matching network to a 169 MHz or 868 MHz antenna. Because all channel filtering is on-chip, no external SAW filters are needed at the IF, reducing BOM cost. Design consideration: use a TCXO reference for N-mode narrowband channels to keep frequency error within the sub-band mask over the full -40C to +85C temperature range.
Được đề xuất
Industrial Telemetry and Remote Control
In industrial telemetry - tank level monitoring, crane and gate remote control, and machine status reporting - the CC1120RHBT provides robust links in electromagnetically noisy plants. Its high blocking and selectivity performance rejects interference from variable-frequency drives and welding equipment, and OOK/2FSK modulation support matches legacy industrial radio protocols for retrofit projects. The 410-480 MHz and 820-960 MHz band coverage lets one PCB design serve regional frequency plans. The device's 200 kbps capability supports fast command channels while narrowband operation preserves coexistence with licensed users. The exposed-pad VQFN-32 offers a solid RF ground for reliable performance across vibration and temperature extremes. A typical design pairs the transceiver with an MCU implementing redundant packet acknowledgement, using GPIO interrupts for FIFO and packet-status signaling to keep latency predictable.
Được đề xuất
169 MHz / 433 / 868 / 915 MHz Sensor Networks
Sub-GHz mesh and star sensor networks benefit from the CC1120RHBT's combination of -123 dBm sensitivity and +16 dBm output, which yields multi-kilometre line-of-sight range at narrow channel bandwidths. The four-band coverage (164-192, 274-320, 410-480, 820-960 MHz) means a single hardware platform can be certified for North America (915 MHz), Europe (868 MHz), and Asia (433 MHz) with firmware changes only. RSSI and link-quality indicator outputs support dynamic channel selection in frequency-agile stacks. Battery-powered sensor nodes exploit the low-voltage 2-3.6 V operation and low standby current, waking over SPI only for scheduled transmissions. Layout care is important: keep the differential RF path matched to 50 ohms per the TI reference design and place a solid ground plane under the exposed pad to stabilize VCO performance at the band edges.
Được đề xuất
Home and Building Automation
Home and building automation systems - door locks, smoke detectors, blinds control, and HVAC sensors - use the CC1120RHBT where penetration through concrete and metal-framed walls matters more than data rate. Sub-GHz propagation at 868/915 MHz outperforms 2.4 GHz in building interiors, and the CC1120's selectivity keeps coexisting networks separated at 12.5 kHz channel spacing. OOK mode supports ultra-low-power wake channels: a low-cost OOK receiver can wake the main node, which then activates the CC1120 for a high-reliability FSK data exchange. The integrated packet engine with FIFOs offloads framing from the host MCU, allowing 8-bit controllers to manage the network. Design trade-off: at +16 dBm the PA draws significant current, so schedule transmissions and use adaptive output power per the TI datasheet power tables to maximize battery life.
Được đề xuất
Alarm and Security Systems
Wireless alarm panels, panic transmitters, and gateways rely on the CC1120RHBT's combination of range and message integrity. The -123 dBm sensitivity guarantees alarm delivery from remote perimeters where received signal levels fall below typical transceivers' floors, and the high selectivity prevents false loss of link in RF-dense urban environments. The 200 kbps maximum rate comfortably handles encrypted alarm frames with per-packet authentication overhead. Two-way communication with channel blacklisting - enabled by the RSSI and LQI readouts - allows the gateway to steer around jamming or interference, an important anti-tamper feature in security products. Regulatory compliance across 433, 868, and 915 MHz bands lets manufacturers build one radio platform for global security markets. The VQFN-32 exposed pad also aids EMC performance, keeping spurious emissions within EN 300 220-style masks when layout follows the TI reference design.
Được đề xuất
Long-Range Narrowband Data Links
Point-to-point and point-to-multipoint narrowband links - weather stations, reservoir monitoring, agricultural gateways - exploit the CC1120RHBT's headline strength: a very high link budget at narrow bandwidths. Combining +16 dBm transmit power with -123 dBm sensitivity gives roughly 139 dB of raw link budget, enough for tens of kilometres line-of-sight with proper antennas, or reliable non-line-of-sight service in difficult terrain. Narrow channels such as 12.5 kHz or 6.25 kHz concentrate energy and reject broadband interference, and the integrated synthesizer tunes across the 274-320 MHz and 410-480 MHz windows licensed for telemetry in many countries. When more range is required, the pin-compatible CC1125 upgrades output to +27 dBm on the same footprint, and the CC1190 front-end adds a PA/LNA stage to the CC1120 with a matched-reference layout from TI.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho CC1120RHBT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | CC1120RHBR | CC1121RHBT | CC1125RHBT |
|---|---|---|---|---|
| Package | VQFN-32 (RHB) | VQFN-32 (RHB) - same | VQFN-32 (RHB) - same | VQFN-32 (RHB) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Type | Transceiver | Transceiver | Transceiver | Transceiver |
| Max Output Power | +16 dBm | +16 dBm | +16 dBm (higher PA class) | +27 dBm (868/915 MHz) |
| Receiver Sensitivity | -123 dBm | -123 dBm | -123 dBm | -129 dBm |
| Frequency Bands | 164-192 / 274-320 / 410-480 / 820-960 MHz | Same bands | Same bands | 169 / 410-480 / 820-960 MHz |
| Packaging Option | Tray (RHBT) | Tape & Reel (RHBR) | Tray (RHBT) | Tray (RHBT) |
| Protocol Support | Proprietary, Wireless M-Bus (S, C, N) | Proprietary, Wireless M-Bus (S, C, N) | Proprietary, Wireless M-Bus | Proprietary, Wireless M-Bus |
Bảo phân biệt quan trọng
- Highest selectivity and blocking performance in the TI sub-1 GHz family (vsCC1125RHBT)
- External SAW/IF filters eliminated (vsCC1120RHBR)
- Tray packaging for prototyping and manual assembly (vsCC1120RHBR)
Ghi chú thiết kế
Solder the exposed thermal pad of the VQFN-32 (RHB) package to a grounded PCB pad with an array of thermal vias - this pad is the primary RF ground for the VCO and PA. Follow the TI CC1120 reference design layout: keep the differential RF_N/RF_P matching network compact, symmetric, and routed on the top layer with a solid ground plane beneath. Do not route digital SPI traces under the RF matching network. Place the 40 MHz crystal within 5 mm of the XOSC pins with short, symmetric traces and load capacitors sized per the crystal datasheet to hit the target load capacitance.
Supply the CC1120 from a clean 2-3.6 V rail; the PA at +16 dBm draws peak current in the range of tens of milliamps per TI reference designs, so decouple each VDD pin with 100 nF close to the pin plus a bulk 10 uF per the reference design BOM. Estimated: a metering node transmitting 10 ms packets every 10 s at +16 dBm averages well under 1 mA with the radio otherwise in IDLE or SLEEP, but battery sizing should use the datasheet current-consumption tables for your exact settings rather than this estimate.
Narrowband channels expose frequency-reference error: a standard +/-10-20 ppm crystal can shift the carrier out of a 6.25 kHz or 12.5 kHz channel mask over temperature, causing sensitivity loss or regulatory non-compliance. Use a TCXO (about +/-0.5 to +/-2 ppm) for channels narrower than 25 kHz. Also note the CC1120 is host-controlled - budget MCU SPI bandwidth and GPIO timing for FIFO servicing in your firmware, and verify antenna matching (50 ohm) with a VNA rather than copying reference design values to a different stack-up.
Thông tin tuân thủ
RoHS compliant per TI product data. Lead-free matte-finish VQFN package. REACH and conflict-minerals declarations should be obtained from TI's compliance portal.
