Description

The SX1231 is a highly integrated RF transceiver suitable for operation over various frequency ranges. It can operate over 433 MHz, 868 MHz, and 915 MHz license-free ISM bands, used mainly in the industrial scientific and medical industries. The device has an integrated architecture that requires a minimal number of external components while providing design flexibility. Most of the major communication parameters are programmable, and some of them can be dynamically set.

Specifications and features

• High Sensitivity: down to -120 dBm at 1.2 kbps
• High Selectivity: 16-tap FIR Channel Filter
• Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm, 80 dB Blocking Immunity, no Image Frequency response
• Low current: Rx = 16 mA, 100nA register retention
• Programmable Pout: -18 to +17 dBm in 1dB steps
• Constant RF performance over voltage range of chip
• FSK Bit rates up to 300 kb/s
• Fully integrated synthesizer with a resolution of 61 Hz
• FSK, GFSK, MSK, GMSK, and OOK modulations
• Built-in Bit Synchronizer performing Clock Recovery
• Incoming Sync Word Recognition
• 115 dB+ Dynamic Range RSSI
• Automatic RF Sense with ultra-fast AFC
• Packet engine with CRC, AES-128 encryption and 66-byte FIFO
• Built-in temperature sensor and Low Battery indicator

Application Scenarios

The SX1231 is suitable for a wide range of applications including:

• Automated Meter Reading
• Wireless Sensor Networks
• Home and Building Automation
• Wireless Alarm and Security Systems
• Industrial Monitoring and Control

Comparison

• The device supports multiple frequency bands making it versatile.
• The integrated architecture reduces the number of external components required.
• Most major communication parameters are programmable.
• Several modulation schemes are supported.

• The device is designed for specific frequency ranges, limiting its use in different industries.