SI4421-A1-FTR - Silicon Labs

Manufacturer Part Number

SI4421-A1-FTR

Manufacturer

Energy Micro (Silicon Labs)

Introduction

Highly Integrated RF Transceiver IC for 315/434/868/915 MHz ISM Bands

Product Features and Performance

Operates in 315/434/868/915 MHz ISM frequency bands

Transmit Power: 7 dBm

Receive Sensitivity: -110 dBm

Data Rates up to 256 kbps

Highly Integrated Architecture with Embedded MCU and Analog Front-End

Low Power Consumption: 15-24 mA Tx, 11-13 mA Rx

Product Advantages

Compact 16-TSSOP package

Wide supply voltage range: 2.2V to 3.8V

Extended temperature range: -40°C to +85°C

Flexible SPI serial interface

Key Technical Parameters

Frequency: 315 MHz, 434 MHz, 868 MHz, 915 MHz

Operating Voltage: 2.2V to 3.8V

Operating Temperature: -40°C to +85°C

Modulation: FSK

Transmit Current: 15-24 mA

Receive Current: 11-13 mA

Quality and Safety Features

RoHS Compliant

Tape & Reel (TR) packaging

Compatibility

Surface Mount Technology (SMT) compatible

Application Areas

Wireless sensor networks

Home and building automation

Alarm and security systems

Industrial remote control

Product Lifecycle

The SI4421 is an active and widely available product from Silicon Labs.

There are no immediate plans for product discontinuation.

Upgrades and replacements may become available in the future as technology evolves.

Several Key Reasons to Choose This Product

Broad frequency band support (315/434/868/915 MHz) for global flexibility

Excellent RF performance with up to 7 dBm transmit power and -110 dBm receive sensitivity

Low power consumption for battery-powered applications

Integrated microcontroller and analog front-end for a compact solution

Wide operating voltage and temperature range for diverse deployment environments

Flexible SPI interface for easy integration into system designs