ASTMKH-32.768KHZ-MP-D26-T3

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Oscillators are electrical circuits employing active components, usually transistors, and passive components such as resistors, inductors, and capacitors, to generate a sinusoidal output signal having a certain frequency range. Among oscillators are general-purpose ICs, timers, voltage-controlled oscillators, and quartz-crystal oscillators. This article focuses on Quartz-Crystal Oscillators, such as the ASTMKH-32.768KHZ-MP-D26-T3, discussing its application field and working principle.

Application Field

The ASTMKH-32.768KHZ-MP-D26-T3 is a Quartz Crystal Oscillator developed by KDS bearing and Components, and is best suited for applications in consumer electronics and mobile devices requiring high frequency accuracy and stability. It is suitable for telecommunication applications, such as cellular phones, and for high-fidelity audio applications, such as digital audio players. This product operates up to a frequency of 32.7KHz and has a low power consumption of 6 mW. The design is such that it is highly resistant to electrostatic discharge (ESD) and can withstand temperatures up to 105°C.

Working Principle

A Quartz Crystal Oscillator consists of an oscillator circuit surrounding a quartz resonator; the Quartz Crystal acts as the resonating element. When an AC voltage is applied to the crystal, it starts vibrating at its resonant frequency. This vibration oscillates the capacitor-inductor tank circuit, which is connected to the opposite end of the crystal. If the frequency of the voltage applied to the crystal is off the desired frequency, the oscillator circuit will adjust it, by adjusting the values of inductor and capacitor in the tank circuit, in order to match the circuit\'s resonant frequency to the crystal\'s natural frequency.

The ASTMKH-32.768KHZ-MP-D26-T3 consists of a 32.7K MHz Resonator, a Signal Buffer, and a PLL frequency synthesizer. The oscillator circuit output amplitude is controlled by the frequency synthesizer\'s circuitry and a pair of VCOs and the two modulation diodes in each package supply the amplitude stability. The circuit is very stable and reliable. It also provides a wide frequency range, from 5 to 124.7 MHz.

Conclusion

The ASTMKH-32.768KHZ-MP-D26-T3 is a Quartz Crystal Oscillator that is most suitable for applications in consumer electronics and mobile devices requiring high frequency accuracy and stability. It is highly resistant to electrostatic discharge (ESD) and can withstand temperatures up to 105°C. The circuit is very stable and reliable and provides a wide frequency range, from 5 to 124.7 MHz.

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