SI4461-B1B-FMR

RF Transceiver ICS Overview

The SI4461-B1B-FMR is a sub-GHz RF transceiver from Silicon Labs, designed for ISM band applications between 119 MHz and 1.05 GHz. It features a maximum output power of 16 dBm and a sensitivity of -126 dBm. The device supports data rates up to 1 Mbps with modulation formats including FSK, GFSK, GMSK, MSK, and OOK. Operating on a supply voltage of 1.8 V to 3.6 V, it consumes 10.7 mA to 13.7 mA during reception and 29 mA to 43 mA during transmission. Packaged in a 20-VFQFN exposed pad, it operates within a temperature range of -40°C to 85°C.

RF Transceiver ICS Feature Summary

• Supports multiple modulation schemes including FSK, GFSK, GMSK, MSK, and OOK for versatile communication protocols.
• Delivers industry-leading receiver sensitivity and high output power for reliable long-range connectivity.
• Integrates an SPI interface for efficient digital control and configuration.

RF Transceiver ICS Applications

• Wireless sensor networks
• Remote keyless entry systems
• Industrial telemetry

RF Transceiver ICS Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches project requirements. Check for recent Product Change Notifications regarding assembly sites or packaging updates. Ensure compliance with RoHS standards and environmental regulations applicable to your region. Validate that the package type aligns with existing PCB footprints.

RF Transceiver ICS Selection Notes

Choose this model for applications requiring robust sub-GHz performance with moderate output power. Consider the 16 dBm limit when designing antenna systems. Evaluate current consumption against battery life requirements. Ensure the operating frequency range covers all target regulatory bands. Verify compatibility with existing microcontroller SPI interfaces.

RF Transceiver ICS Part Context

This component belongs to the SI446x family of wireless transceivers. It shares architectural similarities with other members like the SI4463 and SI4464 but differs in output power specifications. The family utilizes EZRadioPro technology for simplified integration. Designers often select this part for cost-sensitive applications needing reliable short-to-medium range communication.

RF Transceiver ICS Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Silicon Labs resources for potential alternatives.