579L100CTT

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Oscillators

Oscillators are electronic circuits that use an external power source to generate electrical signals. This type of circuit is used in a variety of applications, such as the generation of radio waves, generation of audio signals, detection of radar signals, and generation of sine waves. Many oscillators use an amplifier to increase the output signal level, technology developed to allow engineers to precisely control the output frequency and phase of the generated output signals.

579L100CTT Application Field and Working Principle

The 579L100CTT oscillator from Fujitsu is a programmable crystal oscillator intended for use in communication equipment, router and network applications. The frequency range of the oscillator is from 8.25 MHz to 150 MHz, and the operating voltage range is from 2.7V to 3.6V. The device has a power supply rejection ratio (PSRR) of -95 dBc/V. The 579L100CTT oscillator is available in a variety of packages, including SSOP-8, TSSOP-8, and a surface-mount plastic package.

The 579L100CTT oscillator uses an external crystal as the resonator. The external crystal is typically a quartz crystal, which is selected for its high frequency accuracy and stability. The crystal is connected to the oscillator via two capacitors, which serve to isolate the crystal from the oscillator’s internal circuitry. The external crystal and capacitors form an LC tank circuit, which acts as an oscillator.

The 579L100CTT oscillator’s circuitry then amplifies the signal generated by the crystal resonance. The device has three operating modes: a low power mode, a normal mode, and a high power mode. The operating mode is selected through an I2C interface. Depending on the mode selected, the device will draw varying amounts of current from the power supply, allowing it to be used in a variety of applications without the need to compromise between performance and power efficiency.

The 579L100CTT oscillator is also equipped with an enable/disable pin, and it has a temperature range of -40 ºC to +85 ºC. The device is highly accurate, with a frequency stability of ±2ppm at 25 ºC over an operating temperature range of -40 ºC to +85 ºC. It also has an excellent phase noise performance, with a maximum phase noise of -100 dBc/Hz at 10 kHz offset.

The 579L100CTT oscillator is an ideal choice for designers looking to use the highest performance and most efficient oscillator for their application. With its high frequency accuracy, low current consumption, excellent phase noise, and wide supply voltage range, the device can be used in a variety of applications such as cellular base stations, routers, and network equipment.

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