TXC recommends a symmetrical PCB layout with a ground plane underneath the oscillator to minimize noise and radiation. Keep the oscillator away from high-frequency signals and ensure a clear return path for the crystal.
The 7Q-40.000MDS-T has a typical start-up time of 2-5 ms. Ensure that your system design allows for this start-up time before expecting a stable clock signal. You can also consider adding a reset circuit to hold your system in reset until the oscillator is stable.
The recommended drive level for the 7Q-40.000MDS-T is 1-10 μW. Exceeding this drive level can reduce the oscillator's lifespan or cause it to malfunction.
The 7Q-40.000MDS-T has a specified frequency stability of ±20 ppm over the operating temperature range of -40°C to +85°C. However, the oscillator's frequency may vary by up to ±50 ppm over the full temperature range. Consider this variation when designing your system's clock circuitry.
While the 7Q-40.000MDS-T is designed to be rugged, it's still susceptible to vibration-induced frequency shifts. If your system will be exposed to high vibrations, consider using a vibration-resistant oscillator or adding mechanical dampening to minimize the effects of vibration.
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