Silicon Labs RF Transceiver IC Low IF/ISM 1Mbps SPI Interface QFN 20-Pin Si4461-C2A-GM

Silicon Labs Si4461-C2A-GM is a Low IF/ISM RF Transceiver Integrated Circuit housed in a 20-pin QFN package. It supports flexible wireless communication in the sub-1 GHz band, covering an operational frequency of up to 1050 MHz. Designed to meet the demands of sophisticated ISM band applications, this transceiver supports multiple modulation schemes such as GMSK, 4GSFK, GSFK, and OOK, enabling data rates up to 1 Mbps with reliable and efficient spectral usage.

The device features a robust SPI interface and surface mount technology, making it suitable for dense PCB layouts. It operates within supply voltages of 1.8 V to 3.8 V and withstands industrial temperature ranges from minus 40 degrees Celsius to 85 degrees Celsius, ensuring dependable operation under harsh conditions.

With a compact footprint measuring 4mm by 4mm and a height of only 0.85mm, the Si4461-C2A-GM fits well into space-constrained designs. It offers output power up to +16 dBm and sensitivity as low as -126 dBm, allowing for long-range wireless communication and enhanced link reliability.

This transceiver is part of the EZRadioPRO® series that supports IEEE 802.15.4g and wireless M-Bus standards, making it ideal for applications including industrial monitoring, automation, remote controls, and Internet of Things (IoT) devices requiring robust sub-GHz wireless communications.

The integration of features such as wake-up timer, low-battery detector, and FIFO data buffers enhances system power efficiency and user flexibility. Designed without automotive certification, it is best suited for industrial, commercial, and laboratory electronic systems where reliable wireless data transmission is essential.

This IC supports data rates up to 1 Mbps using modulation techniques including GMSK, 4GSFK, GSFK, and OOK. Operates with a minimum supply voltage of 1.8V and maximum of 3.8V, suitable for low power designs. Compact 20-pin QFN package with dimensions 4mm x 4mm x 0.85mm height.

Wide operating temperature range from -40°C to 85°C for industrial applications. Output power up to +16 dBm with receiver sensitivity down to -126 dBm for extended range. Supports SPI interface and surface mount technology for efficient PCB assembly.

Compatible with EZRadioPRO® technology and supports IEEE 802.15.4g and wireless M-Bus standards. Includes auxiliary features such as wake-up timer, low-battery detector, and FIFO buffers. Ideal for industrial, laboratory, commercial, and IoT wireless communication applications.

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