SWRA495L December   2015  – April 2025 CC1310 , CC1350 , CC2620 , CC2630 , CC2640 , CC2640R2F , CC2640R2F-Q1 , CC2642R-Q1 , CC2650 , CC2662R-Q1

1.   1
2.   Abstract
3.   Trademarks
4. 1 Oscillator and Crystal Basics
   1. 1.1 Oscillator Operation
   2. 1.2 Quartz Crystal Electrical Model
      1. 1.2.1 Frequency of Oscillation
      2. 1.2.2 Equivalent Series Resistance
      3. 1.2.3 Drive Level
      4. 1.2.4 Crystal Pulling
   3. 1.3 Negative Resistance
   4. 1.4 Time Constant of the Oscillator
5. 2 Overview of Crystal Oscillators for CC devices
   1. 2.1 24MHz and 48MHz Crystal Oscillator
   2. 2.2 24MHz and 48MHz Crystal Control Loop
   3. 2.3 32.768kHz Crystal Oscillator
6. 3 Selecting Crystals for the CC devices
   1. 3.1 Mode of Operation
   2. 3.2 Frequency Accuracy
      1. 3.2.1 24MHz and 48MHz Crystal
      2. 3.2.2 32.768kHz Crystal
   3. 3.3 Load Capacitance
   4. 3.4 ESR and Start-Up Time
   5. 3.5 Drive Level and Power Consumption
   6. 3.6 Crystal Package Size
7. 4 PCB Layout of the Crystal
8. 5 Measuring the Amplitude of the Oscillations of Your Crystal
   1. 5.1 Measuring Start-Up Time to Determine HPMRAMP1_TH and XOSC_HF_FAST_START
9. 6 Crystals for CC13xx, CC26xx, CC23xx and CC27xx
10. 7 High Performance BAW Oscillator
11. 8 CC23XX and CC27XX Software Amplitude Compensation
12. 9 Internal Capacitor Array for CC23XX and CC27XX
13. 10Internal Capacitor Array for CC13xx and CC26xx
14. 11Summary
15. 12References
16. 13Revision History