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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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CC2430-RTR1-F128 데이터시트(PDF) 17 Page - Texas Instruments |
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CC2430-RTR1-F128 데이터시트(HTML) 17 Page - Texas Instruments |
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17 / 234 page  CC2430 CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A Page 17 of 232 7.7 High Speed RC Oscillator TA=25°C, VDD=3.0V if nothing else is stated. Parameter Min Typ Max Unit Condition/Note Frequency 16 MHz Calibrated High Speed RC Oscillator frequency is XTAL frequency multiplied by 1/2 Uncalibrated frequency accuracy ±18 % Measured on Chipcon’s CC2430 EM reference design. Calibrated frequency accuracy ±0.6 ±1 % Start-up time 10 µs Temperature coefficient -325 ppm / °C Frequency drift when temperature changes after calibration Supply voltage coefficient 28 ppm / mV Frequency drift when supply voltage changes after calibration Initial calibration time 50 µs When the High Speed RC Oscillator is enabled, calibration is continuously done in the background as long as the crystal oscillator is running. Table 11: High Speed RC Oscillator parameters 7.8 Frequency Synthesizer Characteristics TA=25°C, VDD=3.0V if nothing else stated. Measured on Chipcon’s CC2430 EM reference design. Parameter Min Typ Max Unit Condition/Note Phase noise −107 −113 −119 −121 dBc/Hz dBc/Hz dBc/Hz dBc/Hz Unmodulated carrier At ±1 MHz offset from carrier At ±2 MHz offset from carrier At ±3 MHz offset from carrier At ±5 MHz offset from carrier PLL lock time 192 µs The startup time when the crystal oscillator is running and RX / TX turnaround time Table 12: Frequency Synthesizer Parameters |
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