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CC1101QRHBRG4Q1

TICC1101QRHBRG4Q1

Texas Instruments
IC RF TxRx Only General ISM < 1GHz 310MHz ~ 348MHz, 420MHz ~ 450MHz, 779MHz ~ 928MHz 32-VFQFN Exposed Pad
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Overview

The CC1101QRHBRG4Q1 is an automotive-qualified (AEC-Q100) sub-1GHz RF transceiver designed for ultra-low-power wireless applications in the ISM and SRD bands. It supports multiple modulation formats including 2-FSK, GFSK, MSK, and OOK, operating across several frequency ranges between 310MHz and 928MHz. This device is specifically engineered for high reliability in harsh environments with an extended temperature range of -40C to 125C.

Why Choose This Part

This transceiver offers exceptional sensitivity of -114dBm at low data rates and an integrated frequency synthesizer for high flexibility. Its automotive qualification and wide operating voltage of 1.8V to 3.6V make it ideal for battery-powered vehicle sensors. The device also features a 64-byte FIFO for transmit and receive buffering, reducing the processing load on the host microcontroller.

Applications

Remote Keyless Entry (RKE)
Secure sub-1GHz communication between vehicle key fobs and internal control modules.
Tire Pressure Monitoring Systems (TPMS)
Low-power data transmission from wheel-mounted sensors to a central vehicle receiver.
Garage Door Openers
Reliable long-range signaling for residential and commercial gate and door access.
Vehicle Service Links
Short-range diagnostic or status updates for automotive service equipment.

Key Specifications

Type TxRx Only
Frequency 310MHz ~ 348MHz, 420MHz ~ 450MHz, 779MHz ~ 928MHz
Modulation 2FSK, GFSK, ASK, MSK, OOK
Sensitivity -114dBm
Mounting Type Surface Mount
Package / Case 32-VFQFN Exposed Pad
Power - Output 11dBm
Data Rate (Max) 250kBaud
Voltage - Supply 1.8V ~ 3.6V
Serial Interfaces SPI
RF Family/Standard General ISM < 1GHz
Current - Receiving 15.5mA ~ 19.3mA
Operating Temperature -40degC ~ 125degC
Current - Transmitting 12.1mA ~ 35.5mA
Supplier Device Package 32-VQFN (5x5)

Getting Started

Engineers should utilize the SmartRF Studio software from Texas Instruments to evaluate RF performance and generate configuration register values. For hardware prototyping, integrate the IC via its 4-wire SPI interface and ensure the RF layout follows TI reference designs for the balun and matching network to achieve optimal 11dBm output power.