SI2494-A-FM

Series:	--
Packaging:	Tray
Part Status:	Active
Data Format:	V.34, V.92
Baud Rates:	--
Voltage - Supply:	3 V ~ 3.6 V
Mounting Type:	Surface Mount
Package / Case:	38-VFQFN Exposed Pad
Supplier Device Package:	38-QFN (5x7)
Base Part Number:	SI2494

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Introduction

SI2494-A-FM is a family of ICs and Modems from Silicon Laboratories. It is a full solutions modem with embedded microcontroller, radio, transceiver, antenna, and power management unit, making it an ideal platform for industrial embedded applications. The SI2494-A-FM integrates various radio frequency (RF) modulations and multiple interfaces in one IC design, making it an ideal solution for a broad range of application fields that require radio communication. In this article, we will discuss the application field and working principle of the SI2494-A-FM.

Application Field

The SI2494-A-FM is used in a variety of application fields, ranging from consumer electronics to industrial automation. In consumer electronics, the SI2494-A-FM is widely used for remote control devices, home automation systems, sensing and monitoring solutions, human-computer interaction solutions, and medical devices. In industrial automation, it is widely used for asset tracking, safety checks, machine-to-machine (M2M) communication, machine health monitoring, and expected maintenance alerts. Other applications of the SI2494-A-FM include automotive infotainment, smart city infrastructure, security solutions, and satellite communication.

Working Principle

The working principle of the SI2494-A-FM is based on its radio frequency (RF) modulations. The modem employs various RF modulations, including FSK, GFSK, MSK, and OOK to transmit data at up to 250kbps. It also uses Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) protocols to improve communication reliability. The SI2494-A-FM integrates multiple interfaces in one IC design and these interfaces can be used to connect it to external systems. The interfaces include UART, SPI, I²C, USB, and proprietary asynchronous serial interfaces such as RISC and DIO. These interfaces allow for easy integration with microcontrollers or other embedded systems.The modem also features a power management unit (PMU) which allows for efficient power management. The PMU is able to automatically switch between different power modes such as standby, low-power listening, transmit, and full-power mode. This helps to reduce power consumption and extend the device’s battery life.

Conclusion

The SI2494-A-FM is an IC and modem from Silicon Laboratories that has a wide range of applications in various fields. It is based on radio frequency modulations and can achieve data rates of up to 250kbps. It integrates multiple interfaces, such as UART, USB, and SPI in one IC design and also features a power management unit that can reduce power consumption and extend the device’s battery life. This makes the SI2494-A-FM an ideal solution for many embedded and industrial applications that require radio communication.

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