CE3291-32.768

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Oscillators

CE3291-32.768 is one of the most commonly used oscillator components and it has many applications. This oscillator operates on the principle of a quartz crystal having an exact resonant frequency, usually 32.768 kHz for this oscillator.

Applications

CE3291-32.768 is primarily used for timekeeping in digital clocks, wrist watches, and other timekeeping devices. It can also be used for timing in digital signal processing (DSP) applications such as digital filters, phase-locked loops, and frequency synthesis. In addition, it is also used in automotive applications, such as engine ECU and real-time clock generator.

Working Principle

The main component of the CE3291-32.768 oscillator is a quartz crystal. When electric current passes through the crystal, it vibrates at a frequency that is determined by its shape and composition. This is known as piezoelectric effect.

As illustrated, the quartz crystal is mounted between two electrodes and a parallel capacitor. The resulting quart oscillator is an LC (inductance-capacitance) tuned circuit. When voltage is applied to the electrodes, the crystal will vibrate at a frequency determined by the resonance frequency of the circuit. This frequency is usually 32.768 kHz for the CE3291-32.768 oscillator.

The oscillator also includes a hysteresis circuit for stabilization and noise reduction. This hysteresis circuit utilizes a flip-flop circuit, which changes the state, high or low, of the input, thereby controlling the amount of oscillation. The output is a square wave generated based on the input voltage of the crystal.

CE3291-32.768 is a reliable and widely used oscillator that has many applications. The crystal ensures a precise frequency output and the hysteresis circuit ensures the stability and noise reduction of the signal.

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