SI4420-D1-FT

RF Transceiver ICS Overview

The SI4420-D1-FT is a single-chip, low-power FSK transceiver from Silicon Labs designed for sub-GHz ISM band applications. It supports operation in 315, 433, 868, and 915 MHz frequency bands, complying with FCC and ETSI standards. The device features a maximum data rate of 256 kbps and an output power of 8 dBm. Receiver sensitivity reaches -109 dBm. It utilizes an SPI serial interface for control and communication.

RF Transceiver ICS Feature Summary

• Single-chip integration for low-power FSK transmission and reception
• Multi-channel capability supporting multiple global ISM bands
• Compliance with FCC and ETSI regulatory standards

RF Transceiver ICS Applications

• Wireless sensor networks requiring sub-GHz connectivity
• Industrial monitoring and control systems
• Security alarm systems

RF Transceiver ICS Procurement Notes

Verify the specific suffix 'D1-FT' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the component matches the required regional frequency regulations for the target deployment area. Cross-reference the part number with authorized distributors to avoid counterfeit components.

RF Transceiver ICS Selection Notes

Select this component for applications requiring robust FSK modulation in sub-GHz bands. Consider the 8 dBm output power and -109 dBm sensitivity for range requirements. Verify that the SPI interface compatibility aligns with the host microcontroller. Evaluate power consumption profiles against battery life expectations for the intended use case.

RF Transceiver ICS Part Context

This part belongs to the Si442x family of universal ISM band transceivers. It shares architectural similarities with other members like the Si4421 but may differ in specific pin configurations or software compatibility. The D1-FT designation indicates a specific package and reel configuration within the broader product line.

RF Transceiver ICS Replacement Considerations

Consult official substitution guides for compatible parts such as the SI4421 series if pin-out or feature differences are acceptable. Verify electrical parameter equivalence before swapping components in existing designs.