DSC1001CI1-031.9488T

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Oscillators

Oscillators are devices or systems that produce periodic signals or oscillations, which are usually sinusoidal or nearly sinusoidal. In electronics, oscillators come in various types and shapes—from the simple one-transistor model to complex digital models. The most common types are LC (inductance-capacitance) and RC (resistance-capacitance)

DSC1001CI1-031.9488T Application Field and Working Principle

The DSC1001CI1-031.9488T oscillator is a phase-locked loop (PLL) based oscillator. It reaches the highest frequency in its range, with a frequency range from 250 kHz to 31.5 MHz. With a center frequency of 31.9488 MHz, it is optimized primarily for use in low-power portable electronics applications.

The key technical features of the DSC1001CI1-031.9488T are its low phase noise, low harmonic distortion, low power consumption and high stability. Its phase noise is typically less than −60 dBc/Hz at 1 kHz offset from the carrier for a 10 MHz carrier signal in the 30 MHz to 90 MHz range, and its harmonic distortion is typically better than −35 dBc into a 50 Ohm load. In addition, it only requires 0.4 mA of current, making it one of the most power-efficient PLL oscillators on the market.

How Does the DSC1001CI1-031.9488T Work?

The DSC1001CI1-031.9488T is based on a phase-locked loop (PLL) architecture. The PLL is a control system that compares the phase of a reference signal to a feedback or recovered signal and then adjusts the recovered signal to match the reference. This is done by using a voltage-controlled oscillator (VCO) to synchronize two alternating signals. In this case, the reference signal is generated by a crystal oscillator and the VCO is a digitally-controlled oscillator (DCO). The VCO is used to adjust the frequency of the feedback signal to match the frequency of the reference signal. The PLL, VCO, and DCO work together to maintain the required frequency and the output waveform.

The DSC1001CI1-031.9488T is then tuned to the specific frequency for the application. The tuning is done by a microcontroller, which uses a series of registers to adjust the tuning parameters. The microcontroller also monitors the tuning process and checks that the oscillator is running correctly.Once the tuning is complete, the oscillator is ready to provide a stable, low-noise signal.

In conclusion, the DSC1001CI1-031.9488T oscillator is an ideal choice for portable electronics applications, providing high frequency stability, low phase noise, and low power consumption. Its PLL-based architecture makes it easy to tune and provides a high level of flexibility and accuracy.

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