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Microchip MRF49XA Sub GHz Transceiver Radio

Ideal for bi-directional, short-range wireless applications; provides cost-effective, easy integration with PIC MCUs

The Microchip Technology MRF49XA is a fully integrated Sub-GHz RF transceiver supporting the 434/868/915MHz ISM frequency band and FSK modulation with FHSS capability. The Microchip Technology MRF49XA is ideal for two-way, short-range wireless applications, and is easy to integrate with any Microchip 8-, 16-, or 32-bit PIC® MCU. The MRF49XA RF transceiver is also available on a PICtail™ / PICtail Plus daughter board for easy integration with the 8-bit PIC18 Explorer and 16-/32-bit Explorer 16 modular microcontroller development boards.

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  • Fully Integrated Sub-GHz Transceiver
  • Supports Proprietary Sub-GHz Wireless Protocols
  • 4-Wire Serial Peripheral Interface (SPI)
    Compatible Interface
  • CMOS/TTL Compatible I/Os
  • Clock and Reset Signals for Microcontroller
  • Integrated 10 MHz Oscillator Circuitry
  • Integrated Low Battery Voltage Detector
  • Supports Power-Saving Modes
  • Operating Voltage: 2.2V-3.8V
  • Low-Current Consumption, Typically:
    - 11mA in RX mode
    - 15mA in TX mode
    - 0.3μA in Sleep mode
  • Industrial Temperature Range
  • 16-Pin TSSOP Package
Baseband Features:
  • Supports Programmable TX Frequency Deviation
    and RX Baseband Bandwidth
  • Analog and Digital RSSI Outputs with Dynamic
  • RX Synchronous Pattern Recognition
  • 16-Bit RX Data FIFO
  • Two 8-Bit TX Data Registers
  • Low-Power Duty Cycle Mode
  • Advanced Adjacent Channel Rejection/Blocking
  • Internal Data and Clock Recovery
  • Supports Data Filtering
  • Data Quality Indicator
RF/Analog Features:
  • Supports ISM Band Sub-GHz Frequency Ranges
    (433, 868 and 915 MHz)
  • Modulation Technique: FSK with FHSS Capability
  • Supports High Data Rates:
    - Digital mode 115.2 kbps, max.
    - Analog mode 256 kbps, max.
  • Differential RF Input/Output:
    - -110 dBm Typical Sensitivity with 0 dBm
    Maximum Input Level
    - +7 dBm Typical Transmit Output Power
  • High-Resolution Programmable PLL Synthesizer
  • Integrated Power Amplifier
  • Integrated Low Phase Noise VCO Frequency
  • Synthesizer and PLL Loop Filter
  • Automatic Frequency Control
Typical Applications:
  • Home/Industrial Automation
  • Remote Control
  • Wireless PC Peripherals
  • Remote Keyless Entry
  • Vehicle Sensor Monitoring
  • Telemetry
  • Data Logging Systems
  • Remote Automatic Meter Reading
  • Security Systems for Home/Industrial Environment
  • Automobile Immobilizers
  • Sports and Performance Monitoring
  • Wireless Toy Controls
  • Medical Applications

MRF49XA Block Diagram

  • Microchip Technology
  • Wireless
  • Semiconductors|IC-RF