NX71C50003

Oscillators: NX71C50003 Application Field and Working Principle

Oscillators are circuit components, commonly divided into tuned circuits and frequency synthesisers, designed to generate electrical signals at a required frequency. They are used in a variety of applications to create frequency signals of multiple types. This article will discuss the application field and working principle of NX71C50003, an industrial-level oscillator.

Application Field

NX71C50003 is an industrial-level oscillator developed by Oven Industries, Inc. It’s a low phase-noise digital oscillator for frequency synthesizer with a nominal tuning range of +90 ppm to -90 ppm under +5℃ to +85℃. This intelligent oscillator is ideal for applications requiring precise frequency control over a wide range of temperatures. It also offers extremely low current drain, making it ideal for mobile and wireless communications.

NX71C50003 can be used in a wide range of applications, such as radio frequency (RF), microwave, communication systems, industrial control systems, and medical equipment. Its low power drain and versatile frequency control features also make it appealing to applications such as portable GPS tracking, charging stations, and engine control systems.

Working Principle

NX71C50003 uses a phased-locked loop (PLL) to detect frequency errors and make corrections as required. This ensures that the oscillator’s output frequency is precise and free of jitter. The oscillator’s PLL is driven by an on-chip temperature-compensating bandgap reference, providing both high-accuracy frequency control and thermal stability.

The principal components of the oscillator consist of a digital phase-frequency detector (PFD), a charge pump, a type-II third-order loop filter, a digitally controlled oscillator (DCO), and a frequency divider. The PFD compares the reference frequency and the feedback signal coming from the DCO to detect any frequency errors. The corrections determined by the PFD are then applied to the DCO\'s intentional frequency overflow and to its intrinsic frequency stability.

The loop filter works to eliminate any high-frequency noise that may be present in the signal being fed into the PLL. It\'s a type-II low-pass filter, composed of passive components configured in a specific topology. The frequency divider divides the reference frequency provided to the PLL by a user-defined divisor, allowing the user to select the appropriate frequency for operation. This arrangement, combined with the other components of the oscillator, allows the oscillator to accurately control its output frequency.

Conclusion

This article has discussed the application field and working principle of NX71C50003, an industrial-level oscillator. NX71C50003 is an intelligent oscillator suitable for a wide range of applications, with low power drain and precise frequency control features. The oscillator consists of a PFD, a charge pump, a type-II low-pass filter, a DCO, and a frequency divider, all configured to provide stable and accurate output.