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MRF39RA Datasheet(PDF) 1 Page - Microchip Technology |
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MRF39RA Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 72 page  2015 Microchip Technology Inc. DS40001778B-page 1 MRF39RA 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, 100 nA register retention • Constant RF Performance over Voltage Range of Chip • FSK Bit Rates up to 300 kbps • Fully Integrated Synthesizer with a Resolution of 61 Hz • FSK, GFSK, MSK, GMSK and OOK Demodulation • Built-in Bit Synchronizer Performing Clock Recovery • Incoming Sync Word Recognition • 115 dB+ Dynamic Range Received Signal Strength Indicator (RSSI) • Automatic RF Sense with Ultra-Fast Automatic Frequency Control (AFC) • Packet Engine with CRC, AES-128 Encryption and 66-Byte First In First Out (FIFO) • Built-in Temperature Sensor and Low-Battery Indicator General Description The MRF39RA device is a highly integrated RF receiver capable of operation over a wide frequency range, including the 433, 868 and 915 MHz license-free Industry Scientific and Medical (ISM) frequency bands. Its highly integrated architecture enables for a minimum of external components while maintaining maximum design flexibility. All major RF communication parameters are programmable and most of these can be dynamically set. The MRF39RA offers the unique advantage of programmable narrow-band and wide-band communication modes without the need of modifying external components. The MRF39RA is optimized for low-power consumption while offering high sensitivity and channelized operation. TrueRF™ technology enables a low-cost external component count (elimination of the SAW filter) while still satisfying the European Telecommunications Standards Institute (ETSI) and Federal Communications Commission (FCC) regulations. FIGURE 1: MRF39RA RECEIVER: LOW-POWER INTEGRATED UHF RECEIVER Typical Applications • Automated Meter Reading • Wireless Sensor Networks • Home and Building Automation • Wireless Alarm and Security Systems • Industrial Monitoring and Control • Wireless M-Bus Pin Diagram FIGURE 2: 24-PIN QFN Markets • Europe: EN 300-220-1 • North America: FCC Part 15.247, 15.249, 15.231 • Narrow Korean and Japanese Bands LNA Single to Differential Mixers Modulators SPI DIO0 RSSI AFC Division by 2, 4 or 6 Frac-N PLL Synthesizer XO 32 MHz XTAL Tank Inductor Loop Filter RFIN NC RESET Power Distribution System VBAT1&2 VR_ANA VR_DIG NC RC Oscillator GND GND NC DIO1 DIO2 DIO3 DIO4 DIO5 1 2 3 4 5 6 7 8 9 10 11 12 18 17 16 15 14 13 24 23 22 21 20 19 VBAT1 VR_ANA VR_DIG XTA XTB RESET NSS MOSI MISO SCK GND VBAT2 Low-Power, Integrated UHF Receiver |
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