آر اف (فرکانس رادیویی) و بی‌سیم آی سی‌ فرستنده‌گیرنده آر اف

Product Attributes

Introduction

Si24R2F+ is a wireless transmission chip with embedded transmission baseband, operating in the 2.4GHz ISM frequency band, suitable for ultra - low power wireless applications. The operating frequency band from 2400MHz to 2525MHz is divided into 126 RF channels. Si24R2F+ uses GFSK/FSK digital modulation and demodulation. Both air data rate and PA output power are configurable. The air data rate can be programmed to 2Mbps, 1Mbps and 250Kbps. The higher data rate contributes the lower power consumption because it takes less time to transmit or receive signals. Si24R2F+ is especially optimized for low power applications. All the register values and FIFO values are maintained in Shutdown mode and the shutdown supply current is 1uA. In Standby mode, the clock still works and the standby supply current is 15uA. It takes less than 130us to start data transmitting. When Si24R2F+ enables automatic transmission function, internal watchdog and internal RCOSC clock works, internal timer starts timing and the chip works in Sleep state with only 1uA standby current. When internal timer is full, automatic transmission controller loads and transmits the data of NVM automatically. After transmitting data, chip enters Sleep state. The average power consumption of Si24R2F+ is very low, especially suitable for the application system of button cell power supply. Si24R2F+ is easy to use, and it can automatically load and transmit data without external MCU. NVM memory can store the configuration of registers and data transmitted. The data will not be lost after power failure and can be maintained for more than 10 years. Under the 3.3V power supply voltage, the external MCU can complete the NVM configuration programming through the 4 - wire SPI interface of the chip without external high voltage. The maximum programmable number of the chip is 64

Features

• 2.4GHz ISM band operation
• Built - in 64 programmable NVM memory
• Ultra - low power consumption
• automatic transmission function
• Low voltage automatic alarm function
• Integrated temperature alarm function
• Integrated NTC temperature acquisition function
• Border count function
• BLE4.2 broadcast package transmission function
• Tamper alarm function
• Integrated conflict prevention communication mechanism
• Built - in 3KHz RCOSC and Hardware Watchdog
• 3.3V programming voltage
• Modulation: GFSK
• Data rate: 2Mbps/1Mbps/250Kbps
• Ultra low shutdown current: 1.0uA
• Wide supply range: 2.1 - 3.6V
• Wide digital I/O voltage range: 1.9 - 3.6V
• Crystal: 16MHz±10ppm
• Maximum transmission power: 12dBm
• TX supply current (2Mbps): 20mA (1dBm)
• Maximum 10MHz, 4 - wire SPI
• Transmit data hardware interrupt output
• QFN20 package
• Compatible with Si24R1 and Si24R2 transmission function

Applications

• Ultra low power active RFID system
• Smart campus card management system
• Electric bicycle anti - theft system
• Fixed assets regulatory system
• The intelligent animal shepherd system