Si24R1 Datasheet: In-Depth Guide to the Ultra-Low-Power 2.4GHz GFSK Transceiver Chip

The Si24R1 datasheet is an essential resource for engineers and developers working with 2.4GHz wireless communication. The Si24R1 is a high-performance, ultra-low-power GFSK transceiver chip that offers excellent value for IoT, smart home, and remote control applications. This article breaks down the Si24R1 datasheet key highlights, features, and applications to help you get started quickly.

Si24R1 Datasheet Key Features

From the Si24R1 datasheet (V1.5), the chip operates in the 2.4GHz ISM band with GFSK/FSK modulation and data rates up to 2 Mbps. Standout specs include:

• Ultra-low shutdown current: 1 µA

• Standby current: 15 µA

• RX sensitivity: -83 dBm @ 2 Mbps

• Max TX power: +7 dBm

• RX current (2 Mbps): 15 mA

• TX current (2 Mbps, 0 dBm): 12 mA

• Integrated high PSRR LDO for stable 1.9–3.6 V operation

• Wide digital I/O voltage: 1.9–5.25 V

• Fast startup: ≤130 µs

• 10 MHz 4-wire SPI interface

• Built-in intelligent ARQ baseband protocol engine

• Hardware interrupts for TX/RX data

• 1-bit RSSI output

• Low-cost 16 MHz ±60 ppm crystal

• Minimal external components for reduced BOM cost

• QFN20 or COB package

These features make the Si24R1 ideal for power-sensitive designs.

Applications from the Si24R1 Datasheet

The Si24R1 datasheet lists applications such as:

• Wireless mouse/keyboard

• Wireless remotes & motion-sensing devices

• Active RFID

• Smart grid/smart home

• Wireless audio

• Wireless data transmission modules

• Low-power mesh sensor networks

The block diagram shows integrated PA/LNA, GFSK modulator, and ARQ engine for reliable performance.

Why Choose Si24R1 Based on the Datasheet

The Si24R1 datasheet highlights its advantages as a cost-effective NRF24L01 alternative with higher TX power, wider I/O tolerance, and simpler peripherals. It's perfect for rapid prototyping and volume production.

Download the Si24R1 datasheet for full pinouts, registers, and protocol details — it's your blueprint for successful wireless projects.

Conclusion

The Si24R1 datasheet reveals a powerful, efficient 2.4GHz transceiver ready for modern IoT challenges. Start building with Si24R1 today!

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