Abracon recommends a symmetrical PCB layout with the crystal oscillator placed close to the microcontroller or clock input, and using a ground plane to minimize noise and radiation. A 4-layer PCB with a dedicated ground plane is recommended for high-frequency designs.
To ensure frequency accuracy and stability, Abracon recommends using a high-quality crystal oscillator with a tight frequency tolerance (e.g., ±10 ppm), and following proper PCB layout and design guidelines. Additionally, consider using a crystal oscillator with a built-in capacitor or using external capacitors to optimize the oscillator circuit.
The ASFL1-32.768MHZ-EC-T crystal oscillator is rated for operation from -40°C to +85°C, but Abracon recommends derating the frequency tolerance and stability over temperature to ensure reliable operation in extreme environments.
While the ASFL1-32.768MHZ-EC-T crystal oscillator is designed to be rugged and reliable, Abracon recommends evaluating the oscillator's performance in the specific vibration or shock environment to ensure it meets the required specifications. Additional mechanical protection or mounting methods may be necessary to ensure reliable operation.
Abracon recommends following proper ESD handling and protection procedures when handling the ASFL1-32.768MHZ-EC-T crystal oscillator, including using an ESD wrist strap, mat, or workstation, and ensuring that the oscillator is properly grounded during assembly and testing.
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ASFL1-32.768MHZ-EC-T Overview
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