How do I specify the overall frequency stability of an Ecliptek EMO™ oscillator?
Ecliptek offers a frequency stability of ±50ppm over an operating temperature range of -40°C to +85°C. Ecliptek specifies the frequency stability performance of the device inclusive of specific oscillator operating conditions. This is often called the “Inclusive Method”. Ecliptek specifies the following parameters for these series of products: • Calibration Tolerance at 25°C • Frequency Stability over Operating Temperature Range • Supply Voltage • Output Load • First Year Aging at 25°C • 260°C Reflow • Shock • Vibration Top of Page • What is oscillator aging and what are the aging specifications for these oscillator series? Aging is the systematic change in frequency with time due to internal changes in the MEMS resonator and/or oscillator. Aging is often expressed as a maximum value in parts per million per year [ppm/year]. The rate of aging is logarithmic in nature. The following factors effect oscillator aging: adsorption and desorption of contamination on the surfaces of the MEMS r
