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Si4464-B1B-FMR

SiLSi4464-B1B-FMR

MPN: SI4464-B1B-FMR
Silicon Labs
IC RF TxRx Only General ISM < 1GHz 119MHz ~ 1.05GHz 20-VFQFN Exposed Pad
4,586 in stock
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Overview

The Si4464-B1B-FMR is a high-performance, low-current transceiver belonging to Silicon Labs EZRadioPRO family, covering the sub-GHz frequency range from 119 MHz to 1.05 GHz. It is designed for long-range applications, offering high sensitivity of -126 dBm and a powerful +20 dBm maximum output power. This device supports multiple modulation schemes including GFSK and OOK while maintaining extremely low standby and shutdown currents for battery-operated devices.

Why Choose This Part

This transceiver provides an industry-leading link budget due to its +20 dBm output power and -126 dBm sensitivity. Its ultra-low standby current of 0.05 uA and shutdown current of 0.03 uA significantly extend battery life in periodic wake-up applications. Additionally, the wide frequency range and support for data rates up to 1 Mbps offer high design flexibility across different global regulatory regions.

Applications

Smart Metering
Ideal for gas and water meters requiring long-range communication and multi-year battery life using low-power sleep modes.
Home Security Systems
Used in wireless door sensors and alarm panels where reliable sub-GHz penetration through walls is critical.
Industrial Telemetry
Facilitates remote monitoring of sensors in industrial environments across distances exceeding several kilometers.
Asset Tracking
Enables long-range tracking of equipment using the 119 MHz to 1.05 GHz bands with minimal power overhead.

Key Specifications

GPIO 4
Type TxRx Only
Frequency 119MHz ~ 1.05GHz
Modulation 4GFSK, GFSK, GMSK, OOK
Sensitivity -126dBm
Mounting Type Surface Mount
Package / Case 20-VFQFN Exposed Pad
Power - Output 20dBm (Max)
Data Rate (Max) 1Mbps
Voltage - Supply 1.8V ~ 3.6V
Serial Interfaces SPI
RF Family/Standard General ISM < 1GHz
Current - Receiving 10.7mA ~ 13.7mA
Operating Temperature -40degC ~ 85degC
Current - Transmitting 70mA ~ 85mA
Supplier Device Package 20-QFN (4x4)

Getting Started

Engineers can evaluate this part using the Silicon Labs Wireless Development Suite (WDS) to configure radio parameters and generate header files. Hardware development typically begins with the 4464-PCE20C915-EK evaluation kit or similar 915 MHz / 434 MHz reference designs. Interface the transceiver to a host MCU via the 4-wire SPI bus and utilize the four programmable GPIOs for interrupt handling or antenna diversity control.

Also Consider

CC1120 TITexas Instruments - A high-performance sub-GHz transceiver known for excellent selectivity and blocking performance in crowded RF environments.
SX1276 Semtech - Consider this if LoRa spread-spectrum modulation is required for even greater range at lower data rates.