In recent years, smart devices such as sweeping robots and drones have developed rapidly, and the functions of the devices have become more and more intelligent. Among them, the obstacle avoidance function is a main embodiment of the intelligence of such products, and the application of crystal oscillators is also increasing. The high-quality crystal oscillator is characterized by high accuracy, stability and reliability. Next, Jiake recommends a SG-210STF crystal oscillator to share with you. In the application of the PCB motherboard of the sweeping robot, the main function of the SG-210STF 24.576M active crystal oscillator is to connect Enter the image processing MCU to provide it with a precise clock output signal. The main frequency of this Epson crystal oscillator is 24.576MHz, the part number is: X1G0041710245 Add link description 00, the initial error is 50ppm, in the temperature range of -40~85℃, completely Meet the requirements of base station and automobile operating temperature range, the frequency is aging at 3ppm/year at room temperature, the oscillation start time is only 3ms, and it supports output enable control.
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SG-210STF active crystal oscillator is mainly equipped with a maximum load capacitance of 15pF, its output frequency is 1m～75m, it supports 1.8V~3.3V voltage power supply, and the maximum working temperature range is -40～105℃ (the working temperature range can be selected according to customer needs , Such as -40～85). Industrial temperature range) Its stability is better than ordinary crystal oscillators, it solves the vibration problem caused by low-frequency stability of crystal oscillators. It has a backup function to meet the needs of low-power applications. The maximum aging rate of crystal frequency is only ±3×10 -6/year, long service life. Solve the problem of large vibration aging frequency of traditional crystal. In terms of miniaturization design, the size parameter is 2.5×2.0×0.8mm, which can meet the needs of miniaturization. The crystal oscillator is generally powered by the single-chip microcomputer. The startup engineer can be based on the actual power supply voltage of the single-chip microcomputer. Need to choose a crystal oscillator.
Under different frequencies and ambient temperatures (-40°C to +105°C), SG-210STF supports different power supply voltage VCC inputs, including 1.60v-3.63v, 1.71v-3.63v and 2.25v-3.63v . In addition, the start-up time of the oscillation does not exceed 3MS (as low as 0s at 90% VCC), the rise/fall time is not more than 3ns/3.5ns (1.8V±10%), and the start-up speed is fast, which can meet the requirements of the oscilloscope system. In addition, SG- The load capacitance of 210STF is not more than 15pF, which helps to avoid system misoperation. The frequency aging rate does not exceed ±3×10-6/year (+25℃, the first year), the frequency stability can be as low as ±100×10-6, and the output accuracy is high, which can basically meet the design of all oscilloscope systems on the market demand.