FC-13A crystal oscillator comprehensively enhances the application of in vehicle equipment

    At present, most microcontrollers in car navigation systems use external crystals. In the circuit design of car navigation systems, it can be said to be the golden place. Therefore, using highly stable and compact crystals is a relatively important matter. This article introduces that Epson's FC-13A crystal oscillator is very suitable for use in the design of car navigation systems. FC-13A crystal is an automotive industrial grade high-precision crystal with excellent frequency performance and AEC-Q200 standard certification. In the design principle of car navigation systems, FC-13A crystal oscillator is connected to a microcontroller to provide 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 crystal oscillator needs to be equipped with filtering capacitors, and FC-13A can be configured with load capacitors of 9pF and 12.5pF.

    In order to meet the stability of the output signal while ensuring miniaturization design. EPSON has designed FC-13A with targeted measures. In terms of output stability and low power, it meets the requirements of automotive grade temperature use, providing 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 maximum crystal aging rate is only ± 3x106/year, with a long service life, meeting the needs of automotive navigation stability applications. The maximum 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 Epson crystal oscillator FC-13A is 3.2 × 1.5 × 0.9mm, using an ultra small SMD package., In order to facilitate flexible configuration for customers. Its driving power is as high as 1.0 megawatt, making low-power design easier to implement.

    FC-13A has stable frequency output. When the excitation power is 0.1uw, the room temperature frequency tolerance is the lowest (+20ppm), and the output only contains the fundamental frequency component. The parabolic coefficient of the frequency temperature curve of FC-13A is -0.04ppm/c, and the inflection point temperature is 25+5c. The output frequency is less affected by temperature. In addition, the frequency aging rate of the crystal is only (+3ppm/year), with a long service life. The ultra-thin packaging can save limited design space in the car. FC-13A has advantages such as high stability, good temperature performance, and miniaturization. It has broad application prospects in the automotive field. Suitable for car audio, navigation systems and other in car devices, it greatly improves the clock accuracy of the system. The FC-13A crystal has a working temperature range of -40 ° C~+125 ° C, and when the excitation power is 0.1 µ W at 25 ° C, the standard frequency tolerance can be selected as ± 20 × 10-6, ± 30 × 10-6, ± 50 × 10-6, and users can choose according to their actual needs.