ABM2-40.000MHZ-D4YF-T Crystals, Oscillators, Resonators

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Crystals: ABM2-40.000MHZ-D4YF-T application field and working principle

A crystal oscillator is an electronic circuit composed of a quartz crystal and an amplifier. Crystalline materials have the unique property to vibrate at a predetermined frequency when an external electrical signal of the same frequency is applied to a quartz crystal. This unique behavior of quartz crystals is exploited to develop frequency sources that are stable and highly accurate. Although quartz crystals can be formed into many shapes and sizes,each crystal has the same basic structure of a quartz bar or plate suspended in a metal frame. The size and thickness of the quartz determine its resonant frequency.

One of the common crystal oscillators is the ABM2-40.000MHZ-D4YF-T series which is miniature and low-cost crystal oscillators with a wide frequency range, from 16 to 50 MHz. It is featured with excellent frequency resolution, good waveform with low phase noise, wide frequency temperature range and RoHS compliant.

Application Field of ABM2-40.000MHZ-D4YF-T

The ABM2-40.000MHZ-D4YF-T series crystal oscillators are widely used in various applications, such as clock oscillators, frequency dividers, PLL and high-speed logic. It is especially suitable for low-voltage applications, since they consume low power, are extremely accurate and provide good EMI noise suppression. Such crystal oscillator is employed in a variety of products and industries, including communication, automotive and civil aeronautical navigation.

Working Principle of ABM2-40.000MHZ-D4YF-T

The ABM2-40.000MHZ-D4YF-T series crystal oscillator is an electronic oscillator that employs a quartz crystal as the resonant element. The design of the oscillator is simple, consisting of an amplifier and an oscillator circuit. The amplifier boosts the power of the input signal from the quartz crystal. The amplified output is then fed back to the crystal, where the oscillator circuit determines the frequency at which the quartz crystal will vibrate. This oscillation frequency is determined by the properties of the quartz crystal and the design of the oscillator circuit.

The quartz crystal has certain discrete frequencies of vibration at which it tends to resonate (its "discrete resonance frequency"). When the amplified input matches one of these frequencies, a standing wave is set up in the quartz crystal which causes it to vibrate. This vibration produces an output signal at the same frequency as the input signal. This output signal is then fed back to the amplifier and thus the oscillator is self-sustaining.

The ABM2-40.000MHZ-D4YF-T series crystal oscillator is a standard device with a piezoelectric quartz crystal as its active device, a biasing circuit, an amplifier, and a feedback loop. The oscillator circuit compares the input and output pins and produces an output signal with a frequency equal to the input resonance frequency of the oscillator crystal.

The positive and negative electrodes of the oscillator crystal are connected to the negative and positive inputs of the oscillator circuit respectively. The amplifier amplifies the weak signal of the crystal and finally, the oscillator circuit aborts the signal to maintain the oscillation of the Oscillator Crystal at the same frequency.

ABM2-40.000MHZ-D4YF-T series crystal oscillator is usually packaged in the form of a miniature package, the oscillator has a size of 3.2mm*2.5mm*1.2mm and its basic performance index is close to that of conventional quartz crystals.

Conclusion

ABM2-40.000MHZ-D4YF-T series crystal oscillator is a miniature and low cost quartz crystal oscillator. It is typically used in applications such as clock oscillators, frequency dividers, PLL, and high-speed logic, and it is especially suitable for low-voltage applications. It has the properties of frequency resolution, waveform with low phase noise and wide frequency temperature range. The design of the oscillator is simple, it is composed of an amplifier and an oscillator circuit, and it mainly works by sustaining a standing wave in the quartz crystal.

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