SG-9101CB 66.6667M-C20PHAAA5 Crystals, Oscillators, Resonators

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Oscillators

SG-9101CB 66.6667M-C20PHAAA5 Application Field and Working Principle

The SG-9101CB 66.6667M-C20PHAAA5 component is an oscillator that is suitable for applications such as precision timing, communications and consumer electronics. This monolithic device is fabricated with the aid of surface-mount technology. To ensure stable operation over a wide range of frequencies, the SG-9101CB contains a number of frequency-controlling elements which together form a phase-locked loop. The phase-locked loop controls the frequency of a crystal oscillator reference to ensure accuracy and low jitter. In addition, the phase-locked loop has the benefit of automatically locking onto the crystal oscillator reference, which eliminates the need for precision trimmers on the circuit board.

The external components of the SG-9101CB 66.6667M-C20PHAAA5 consist of a parallel resonant 30pF crystal, two 20pF load capacitors, two 0µH inductors, and two 1k resistors. The 30pF crystal controls the oscillator\'s frequency stability by providing a precisely calibrated frequency reference signal for the phase-locked loop. The two 20pF load capacitors, when properly matched to the crystal, allow the crystal to oscillate at its correct fundamental frequency. The two 0µH inductors and the two 1k resistors make up the tank circuit, which acts as a filter to ensure stable operation over a wide range of frequencies.

The operation of the SG-9101CB 66.6667M-C20PHAAA5 is based on the principle of phase-locked loops. In phase-locked loops, the device senses the phase of the crystal oscillator reference and compares it to a feedback signal from an internal frequency divider. This process is repeated continuously, with the frequency divider rapidly adjusting its output until the incoming signal and the feedback signal are in phase. Once the two signals are in phase, the frequency divider will then gradually adjust its output to maintain the phase lock and keep the oscillator running at its desired frequency.

The SG-9101CB 66.6667M-C20PHAAA5 offers superior performance in terms of low jitter, low power consumption and wide frequency range. In addition, its external components are easily replaceable for calibration and tuning purposes. This makes the device an ideal choice for precision timing applications in communications and consumer electronics.

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