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Semtech SX1282

Semtech SX1282

Transceiver/MCU/ADC System-on-Chip with RISC CPU for Battery-Powered Ultra-Low Power Applications

The SX1282 transceiver with embedded CoolRISC® MCU, dual 10 and 16-bit ADC and peripherals provides a highly-integrated single-chip acquisition processing and RF solution.

For more information contact: Support_RF@semtech.com

Features

  • Operating voltage down to 1.0V
  • Supply voltage range from 1.0V to 1.6V
    • Entire circuit can operate on a single AA battery
  • Transceiver Chain
    • Dual-Band operation, 434 MHz and 868 MHz
    • Multi-channel, on-chip PLL,12.5 kHz steps
    • FSK and OOK modulation
    • Data rate up to 80 kbit/s FSK
    • Sensitivity of -102 dBm @ 25 kbit/s, FSK, 10-3 BER
    • Receive current 2.5 mA
    • Autonomy up to four years from a single AA battery in wireless sensing
    • Transmit power +10 dBm differential (35 mA supply current)
    • Integrated RX-TX switch
    • Super heterodyne architecture
    • First conversion: IF @ 96 MHz for 868 MHz band
    • Second conversion: zero IF
    • HW support for symbol synchronization and clock recovery
  • Power Management
    • High-current step-up for external EEPROM supply @ 2.7V
    • Low-current step-up for the supply of the data acquisition chains
    • POR and brown-out detector
    • Sophisticated Power Management
    • Unused blocks are powered down
    • Standby current down to 4.0uA typical (23μA maximum)
    • Oscillators
    • Integrated programmable RC oscillator
    • Start-up and μC operation
    • 12.8 MHz crystal oscillator:
    • Transceiver operation
    • Low-power 32 kHz crystal oscillator
    • μA level Time-keeping operation
    • Analog watchdogs detect crystal oscillator failures
  • Data Acquisition
    • Pyroelectric acquisition chain
    • 80 dB PSRR on the full chain
    • 10 μV/LSB
    • 16 bits ADC, 8 Hz bandwidth
    • Auxiliary 10 bits ADC
    • 10k samples/s
    • Multiple signal sources
    • Programmable input attenuation
    • Integrated thermometer function, 2°C accuracy
  • Embedded Core
    • Ultra Low-power
    • 1.3 mA power consumption at 6.4 MIPS
    • CoolRISC technology
    • Energy-efficient RISC architecture
    • Integrated 8x8 multiplier
    • Program loads into and executes from RAM
    • Memory resources
      • 1 kbytes boot ROM
      • 22 kbytes Instruction RAM
      • 1 kbytes data RAM

Applications

  • Alarm and security systems
  • Wireless Sensor Networks
  • Home Automation
  • Wireless computer peripherals
  • Telemetry
  • Sports and Leisure Equipment
  • Industrial Sensing

Packaging

60-pin QFN (7x7mm)

Order Codes

  • SX12821075: