features low power, narrow-band transceiver frequency bands using dual vco 80 mhz to 650 mhz 862 mhz to 950 mhz modulation schemes 2fsk, 3fsk, 4fsk, msk spectral shaping gaussian and raised cosine filtering data rates supported 0.05 kbps to 32.8 kbps 2.3 v to 3.6 v power supply programmable output power −16 dbm to +13 dbm in 63 steps automatic pa ramp control receiver sensitivity −130 dbm at 100 bps, 2fsk −122 dbm at 1 kbps, 2fsk −113 dbm at 25 kbps, raised cosine 2fsk patent pending, on-chip image rejection calibration on-chip vco and fractional-n pll on-chip, 7-bit adc and temperature sensor fully automatic frequency control loop (afc) digital received signal strength indication (rssi) integrated tx/rx switch 0.1 μa leakage current in power-down mode applications narrow-band standards etsi en 300 220, fcc part 15, fcc part 90, fcc part 95, arib std-t67 low cost, wireless data transfer remote control/security systems wireless metering private mobile radio  wireless medical telemetry service (wmts) keyless entry  home automation process and building control pagers

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