Texas Instruments CC1121RHMR

Mfr. Part

CC1121RHMR

Manufacturer

Luminary Micro Texas Instruments

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Detailed Description

High performance sub 1 GHz RF transceiver with integrated control logic. Operates across multiple ISM bands from 164 to 960 MHz. Very high receive sensitivity down to minus 120 dBm and transmit power up to 16 dBm for long range links. Supports multiple modulations including 2FSK, 2GFSK, 4FSK, 4GFSK, MSK, and OOK. Compact 32 pin VQFN package with exposed pad for efficient thermal and RF grounding. SPI interface for simple host MCU connection. Industrial operating temperature range from minus 40 to 85 degrees Celsius. RoHS3 compliant. Stock available at Y-IC with 3715 pieces

Key Features

Frequency bands 164 to 192 MHz, 274 to 320 MHz, 410 to 480 MHz, 820 to 960 MHz

Data rate up to 200 kbps

Receive sensitivity typically minus 120 dBm

Transmit power up to 16 dBm

Supply voltage 2.0 to 3.6 V

Low current consumption 17 to 23 mA in RX and 26 to 54 mA in TX

SPI serial interface

4 GPIO pins for flexible control and interrupts

Memory 4 kB ROM and 256 B RAM for internal control functions

RF family General ISM sub 1 GHz

Mounting surface mount SMD

Package 32 VQFN 5 x 5 mm with exposed pad

RoHS3 compliant

Tape and Reel packaging option

Key Advantages

Long range thanks to high sensitivity and 16 dBm output power

Robust links with multiple modulation options and narrowband performance

Low power consumption helps maximize battery life

Wide frequency coverage fits global ISM bands below 1 GHz

Simple integration using SPI and flexible GPIOs

Small footprint 5 x 5 mm VQFN saves PCB space

Industrial temperature range for harsh environments

Ready stock at Y-IC for fast delivery

Packaging

Type Tape and Reel TR for automated assembly

Package style 32 pin VQFN 5 x 5 mm body with exposed thermal pad on bottom

Material Molded plastic package with copper leadframe typical of VQFN

Mounting Surface mount compatible with standard reflow processes

Pin configuration 32 perimeter pins plus center exposed pad. SPI pins for SCLK, MOSI, MISO, CSn. RF differential pins to matching network. 4 GPIO pins for interrupts and status

Thermal characteristics Exposed pad designed to be soldered to a large ground area for heat spreading and RF grounding. Use multiple vias to inner ground planes for best thermal and RF performance

Electrical properties Supply 2.0 to 3.6 V. RX current 17 to 23 mA. TX current 26 to 54 mA depending on output power. Sensitivity down to minus 120 dBm. Output power up to 16 dBm. Data rate up to 200 kbps

Lifecycle

Status Active and in production based on current market data

Not near discontinuation at this time

Equivalent and alternative models from TI for similar applications

- CC1120 Narrowband sub 1 GHz transceiver in the same family. Similar performance focus. Check pinout and package details

- CC1125 High performance sub 1 GHz transceiver with extended features and higher top data rates. Same general use cases. Verify footprint and pin mapping

- CC1200 Successor family with improved performance and flexible data rates. Great for advanced narrowband systems. Not pin compatible. Review layout changes

- CC1201 Variant of CC1200 with similar feature set. Evaluate based on frequency band needs

- CC1101 Low power sub 1 GHz transceiver for simpler links and lower cost designs. Lower performance than CC112x family but widely used

- CC1111 Sub 1 GHz transceiver with integrated 8051 MCU for single chip designs. Good when you need radio plus MCU together

If you need a drop in replacement or more tailored alternatives contact the Y-IC sales team through our website for expert guidance

Key Application Areas

Smart meters and AMR systems

Industrial monitoring and control

Building automation and smart city networks

Wireless sensor networks and data loggers

Long range telemetry and remote controls

Security systems and alarms

Agricultural monitoring and irrigation control

Asset tracking and logistics

Environmental sensing and weather stations

Home and commercial sub 1 GHz ISM devices

Datasheet

Y-IC hosts the most authoritative datasheet for CC1121RHMR on our product page. Download the datasheet here to get full specifications, design guidance, and layout recommendations

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