Clike here to get datasheet of CC1101 - Elechouse

CC11014.5 Low Power RC OscillatorTc = 25°C, VDD = 3.0 V if nothing else is stated. All measurement results obtained using the CC1101EM reference designs ( [5]and [6]).Parameter Min Typ Max Unit Condition/NoteCalibrated frequency 34.7 34.7 36 kHz Calibrated RC Oscillator frequency is XTALfrequency divided by 750Frequency accuracy aftercalibration±1 %Temperature coefficient +0.5 % / °C Frequency drift when temperature changes aftercalibrationSupply voltage coefficient +3 % / V Frequency drift when supply voltage changes aftercalibrationInitial calibration time 2 ms When the RC Oscillator is enabled, calibration iscontinuously done in the background as long asthe crystal oscillator is running.Table 8: RC Oscillator Parameters4.6 Frequency Synthesizer CharacteristicsTc = 25°C @ VDD = 3.0 V if nothing else is stated. All measurement results are obtained using the CC1101EM referencedesigns ( [5] and [6]). Min figures are given using a 27 MHz crystal. Typ and max are given using a 26 MHz crystal.Parameter Min Typ Max Unit Condition/NoteProgrammed frequencyresolutionSynthesizer frequencytolerance412 Hz 26-27 MHz crystal.397 F XOSC /2 16 The resolution (in Hz) is equal for all frequencybands.±40 ppm Given by crystal used. Required accuracy(including temperature and aging) depends onfrequency band and channel bandwidth /spacing.RF carrier phase noise –92 dBc/Hz @ 50 kHz offset from carrierRF carrier phase noise –92 dBc/Hz @ 100 kHz offset from carrierRF carrier phase noise –92 dBc/Hz @ 200 kHz offset from carrierRF carrier phase noise –98 dBc/Hz @ 500 kHz offset from carrierRF carrier phase noise –107 dBc/Hz @ 1 MHz offset from carrierRF carrier phase noise –113 dBc/Hz @ 2 MHz offset from carrierRF carrier phase noise –119 dBc/Hz @ 5 MHz offset from carrierRF carrier phase noise –129 dBc/Hz @ 10 MHz offset from carrierPLL turn-on / hop time 85.1 88.4 88.4 µs Time from leaving the IDLE state until arriving inthe RX, FSTXON or TX state, when notperforming calibration.Crystal oscillator running.PLL RX/TX settling time 9.3 9.6 9.6 µs Settling time for the 1·IF frequency step from RXto TXPLL TX/RX settling time 20.7 21.5 21.5 µs Settling time for the 1·IF frequency step from TXto RXPLL calibration time 694 721 721 µs Calibration can be initiated manually orautomatically before entering or after leavingRX/TX.Table 9: Frequency Synthesizer ParametersSWRS061C Page 14 of 94