Car mounted crystal oscillator FC-13A suitable for automotive navigation systems

Apr 03,2024
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32768KHz high-temperature resistant onboard crystal oscillator FC-13A for automotive navigation systems. In fact, the FC-13A car mounted crystal oscillator has many characteristics. FC-13A is a 32768KHz high-temperature resistant crystal oscillator with a size of 3215. FC-13A meets the AEC-0200 passive component automotive quality standard certification and is an upgraded version of FC-135 car mounted crystal oscillator equipment. The difference mainly includes two aspects: first, the working temperature has been increased from industrial grade 85 ℃ to automotive grade 125: ℃, so it can also be called a wide temperature crystal oscillator; second, the surface material of the crystal oscillator has been upgraded from glass to all metal, which has improved resistance to harsh working environments. In the design principle of the car navigation system, the FC-13A onboard crystal oscillator, when connected to the microcontroller, provides accurate clock reference for the microcontroller. The MCU can be externally connected to LCD displays, memory and other devices to complete the instrument indication function. The most vibration requires the configuration of filtering capacitors for use, and the FC-13A high-temperature resistant crystal oscillator can be configured with load capacitors of 9pF and 12.5pF for use.

In order to meet the stability of the output signal while ensuring miniaturization design. EPSON has specifically designed FC-13A. In terms of output stability and low power, the operating temperature range of the onboard crystal oscillator FC-13A is -40-125 '℃, which meets the temperature requirements of automotive grade use and is a true high-temperature resistant crystal oscillator. It can provide a stable output frequency of 32.768kHz, with a frequency temperature coefficient of only -0.04ppm/℃. The output frequency is less affected by temperature, and its crystal aging rate is only+3x106/year, which has a long service life and meets the needs of automotive navigation stability applications. The driving power of FC-13A is 1uW, which can meet the low-power application requirements of automobiles. In terms of miniaturization design, the size parameter of FC-13A is 3.2x1.5x0.9mm, using a small SMD package. Currently, most MCUs in car navigation systems use external crystal oscillators. In the circuit design of car navigation systems, it can be said that every inch of land is worth every penny. Therefore, using a highly stable and high-temperature resistant car mounted crystal oscillator is a relatively important thing. FC-13A meets the above requirements in all aspects.