SI4463-C2A-GMR – RF Transceiver 3.3V IC QFN-20

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Datasheet
High-Performance Sub-GHz RF Transceiver IC with Flexible Modulation for Long-Range Wireless Communication
The SI4463-C2A-GMR is a highly integrated RF transceiver designed for reliable long-range wireless communication in sub-GHz frequency bands. Manufactured by Silicon Labs, this device operates with a 3.3V supply and provides excellent receiver sensitivity and programmable output power, making it suitable for low-power wireless systems. It is widely used in IoT devices, industrial automation, wireless sensor networks, and remote monitoring systems where stable and long-distance RF communication is required.
The transceiver supports multiple modulation schemes including FSK, GFSK, OOK, and ASK, allowing flexible wireless protocol implementation. It integrates essential RF components such as a synthesiser, power amplifier, packet handler, and modem, reducing external component requirements. Communication with the host microcontroller is handled through an SPI interface, enabling efficient configuration and data transfer. Packaged in a compact QFN-20 package, the SI4463 is ideal for compact wireless modules and embedded communication systems.
Key Features

Sub-GHz RF Transceiver Designed for reliable wireless communication in sub-1GHz frequency bands.
3.3V Operating Supply Suitable for low-power embedded systems and battery-powered devices.
Multiple Modulation Support Supports FSK, GFSK, ASK, and OOK modulation schemes.
High Receiver Sensitivity Enables long-range wireless communication in low-signal environments.
Programmable Output Power Allows optimisation of transmission range and power consumption.
Integrated Packet Handler Simplifies wireless protocol implementation and data handling.
SPI Communication Interface Provides simple integration with microcontrollers and embedded processors.
Compact QFN-20 Package Suitable for space-constrained RF module designs