SI4430-B1-FM

RF Transceiver ICS Overview

The SI4430-B1-FM is a highly integrated, single-chip wireless ISM transceiver from the EZRadioPRO family by Silicon Labs. It operates within the 900MHz to 960MHz frequency range and supports FSK, GFSK, and OOK modulation schemes. The device features a maximum output power of 13dBm and achieves a sensitivity of -118dBm. It communicates via an SPI interface and includes three GPIOs. Power consumption is specified at 18.5mA during reception and between 18mA to 28mA during transmission. It functions on a supply voltage of 1.8V to 3.6V, with a maximum data rate of 128kbps.

RF Transceiver ICS Feature Summary

• Highly integrated single-chip wireless ISM transceiver solution
• Supports FSK, GFSK, and OOK modulation techniques
• Includes programmable automatic gain control and frequency synthesizer
• Features low current consumption for battery-powered applications

RF Transceiver ICS Applications

• Automatic Meter Reading (AMR)
• Wireless sensor networks
• Security and alarm systems
• Remote keyless entry

RF Transceiver ICS Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific suffix matches the required operational specifications. Check for RoHS compliance status and ensure the package type aligns with PCB design requirements. Validate that the part number corresponds to the intended frequency band and modulation capabilities before procurement.

RF Transceiver ICS Selection Notes

Select this model for applications requiring operation in the 900MHz to 960MHz ISM bands. Consider the 13dBm output power and -118dBm sensitivity for link budget calculations. Ensure the system design accommodates the 1.8V to 3.6V supply voltage range. Verify that the SPI interface and GPIO count meet the microcontroller connectivity needs.

RF Transceiver ICS Part Context

This component belongs to the Si443x series of RF transceivers, designed for sub-1GHz ISM applications. It shares architectural similarities with the Si4431 and Si4432 models but differs in specific frequency coverage and performance metrics. The B1 revision indicates a specific manufacturing lot and feature set within the EZRadioPRO family.

RF Transceiver ICS Replacement Considerations

The SI4430-A0-FM is listed as a discontinued predecessor with a direct replacement available. Evaluate pin compatibility and software register mapping when transitioning between revisions.