SNAA390 july   2023 LMK6C , LMK6D , LMK6H , LMK6P

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Test Standards and Test Setup
    1. 2.1 Test Standards
    2. 2.2 Test Setup in Vibration Lab
  6. 3Sinusoidal Vibration, Random Vibration, and Mechanical Shock Tests
    1. 3.1 Sinusoidal Vibration Test
      1. 3.1.1 Procedure for Sinusoidal Vibration Test
      2. 3.1.2 Results From Sinusoidal Vibration Test
    2. 3.2 Random Vibration Test
      1. 3.2.1 Procedure for Random Vibration Test
      2. 3.2.2 Results From Random Vibration Test
    3. 3.3 Mechanical Shock Test
      1. 3.3.1 Procedure for Mechanical Shock Test
      2. 3.3.2 Results From Mechanical Shock Test
  7. 4Comparison of BAW Oscillator Vibration Performance With Crystal Oscillator
    1. 4.1 Comparison Test Setup
    2. 4.2 Comparison Test Results
  8. 5Summary
  9. 6References

Abstract

BAW (Bulk Acoustic Wave) oscillators are a new entry to oscillator technology. Crystal-based oscillators have existed for many years, even before the introduction of MEMS technology. BAW technology brings benefits to reliability over Crystal-based and MEMS-based oscillators. The high grade reliability of BAW in terms of improved vibration, mechanical shock and mean time between failure (MTBF) performance, alleviates system designer concerns about oscillator performance in harsh environments, allowing designers to focus more on the overall system performance. Unlike quartz or mechanical elements used in the quartz oscillators, TI’s piezoelectric BAW resonator is designed using a semiconductor process.

Mechanical shock and vibration can damage oscillators and degrade performance. Vibrations can result in increased phase noise or jitter and mechanical shocks can result in frequency shifts or spikes. This application note provides more details on BAW oscillator performance under stringent sinusoidal, random vibration, and mechanical shock conditions and describes various MIL-STD-883 test methods, test setup, and performance results.