SI4032-B1-FM

RF Transmitter Overview

The SI4032-B1-FM is a sub-GHz RF transmitter from Silicon Labs, operating within the 240MHz to 930MHz frequency range. It supports FSK, GFSK, and OOK modulation schemes with a maximum data rate of 256kbps. The device delivers up to +20dBm output power and functions on a 1.8V to 3.6V supply. Packaged in a 20-VFQFN exposed pad, it utilizes an SPI interface for control.

RF Transmitter Feature Summary

• High-output power transmission capability up to +20dBm
• Supports multiple modulation formats including FSK, GFSK, and OOK
• Integrated single-chip solution for sub-GHz ISM bands

RF Transmitter Applications

• Wireless sensor networks
• Remote control systems
• Telemetry applications

RF Transmitter Procurement Notes

Verify component authenticity through authorized channels. Confirm package integrity and pin alignment against the 20-VFQFN specification. Check for RoHS compliance status and ensure storage conditions meet moisture sensitivity level requirements prior to assembly.

RF Transmitter Selection Notes

Select this component for designs requiring high transmit power in sub-GHz bands. Ensure the application utilizes FSK, GFSK, or OOK modulation. Verify voltage compatibility with the 1.8V to 3.6V range and confirm SPI interface availability for system integration.

RF Transmitter Part Context

This part belongs to the EZRadioPRO family by Silicon Labs. It serves as a dedicated transmitter variant, distinct from full transceivers like the SI4432. The B1 suffix indicates specific manufacturing revisions and performance characteristics defined by the manufacturer.

RF Transmitter Replacement Considerations

Public confirmed substitute: CC1101RGP (Texas Instruments). Note that the CC1101RGP is a transceiver, not a dedicated transmitter, which may require different firmware and circuit design adjustments.