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Oscillators - 638P15553I3T Application Field and Working Principle

Oscillators have a wide range of applications, mostly in the field of electronics where they are used to regulate voltage and/or provide a constant frequency source. The 638P15553I3T oscillator is a pulse-width modulator that is used to generate accurate frequency and voltage signals for various applications such as frequency synthesis, digital-to-analog conversion, and power supply voltage regulation. This article outlines the 638P15553I3T application field and the working principle of oscillator.

Application Field

The 638P15553I3T oscillator operates in the range of 100 to 200MHz and is suitable for a wide range of applications that require an accurate and stable frequency source. These applications predominantly include:

• Digital-to-analog conversion (DAC)
• Digital phase-locked loops (DPLL)
• Power supply voltage regulators
• Voltage controlled oscillators (VCO)
• Voltage controlled crystal oscillators (VCXO)
• Frequency synthesizers
• Clock multipliers

The 638P15553I3T oscillator can be used to generate the required frequencies for these applications. It is most suitable for operation in a temperature range of -40°C to +85°C and from a single supply voltage, usually from 3-12V.

Working Principle

The 638P15553I3T oscillator is based on the principle of pulse-width modulation (PWM). This is also referred to as the ‘dead-time mechanism’. This mechanism works by having two pulse-width modulated waves, A and B, in which the duty-cycles of A and B modulate each other. Each pulse is a precise width according to a given equation depending on the input control voltage.

The PWM signal is fed to the 638P15553I3T oscillator and amplified by a high current amplifier. A feedback amplifier is also used, which takes the output of the pulse and feeds it back into the input of the device. This allows the device to maintain a constant frequency over a large range of operating voltages and temperatures. The resulting output is highly stable and is usually used as a reference frequency source for clock distribution in digital circuits.

Conclusion

The 638P15553I3T oscillator is a versatile device that offers accurate frequency control over a wide range of applications. It is typically used in digital circuits for clock distribution, frequency synthesis, and voltage regulated power supply. The working principle of the 638P15553I3T oscillator is based on the pulse-width modulation technique, which uses feedback to maintain a constant frequency irrespective of temperature and voltage variations.

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