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Oscillators

The EG-2101CA 78.1250M-DCHB device is a quartz crystal oscillator package offered by Ecliptek designed to operate at a nominal frequency of 78.1250MHz. The oscillator is made with a quartz crystal and an internal CMOS based oscillator design that provides design flexibility, low power consumption and full frequency accuracy. “ECLIPSE” technology offers excellent performance and stability in temperature, voltage and load conditions.

Application Field

The EG-2101CA 78.1250M-DCHB is an ideal device for various frequency regulates, timing and oscillator requirements in commercial and industrial applications that need a source of precision timing and frequency. Examples of such applications include, but are not limited to:

• Wireless applications for cellular phones and data communications
• Frequency Measurement
• Timekeeping applications for network equipment
• Computer and communication equipment
• Telecommunication infrastructure
• Instrumentation and control
• Wireless portable devices
• Consumer electronics such as DVD players

Working Principle

The EG-2101CA 78.1250M-DCHB works according to a stable quartz crystal oscillator design where a quartz crystal is coupled to a transistor in parallel with a capacitor in the resonator circuit. This design makes use of the electrical properties of the quartz crystal and its reluctance to store electrical energy so that it is only capable of supporting stable waves within a certain range of frequencies.

When a positive voltage is applied to the two electrodes of the quartz crystal, an electric current flows through it due to its piezoelectric properties. This current is oscillatory in nature and produces a sine wave output that is stable within a certain range of frequencies determined by the transistor-capacitor network. The frequency of the output signal is determined by the resonant frequency of the quartz crystal.

The ECLIPSE technology used by the EG-2101CA 78.1250M-DCHB offers excellent performance and stability in temperature, voltage and load conditions. This technology provides full frequency accuracy, aged frequency stability, and superior supply voltage/temperature logic performance, making it an ideal device for frequency regulation and timing purposes in a variety of applications.

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