SIT3809AI-D-18NZ

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Programmable Oscillators are used as a wide range of timing devices across many modern applications, providing precise frequency control with a digital interface. The SIT3809AI-D-18NZ is one such type of oscillator, a digital Precision Programmable Oscillator. It is an encapsulated quartz crystal based frequency source ideally suited for short term applications, including highly precise frequency, phase distribution circuits and high-frequency control networks.

The SIT3809AI-D-18NZ oscillator combines two elements, namely the quartz crystal and an advanced programmable digital phase-locked loop (PLL) circuit. At the heart of the oscillator is a temperature stable quartz crystal resonator, which is designed for applications where frequency stability is critical. This precision crystal precisely controls the oscillator frequency, typically down to 8 ppm over the full operating temperature range. The capacitance and load capacitance control the frequency, thus ensuring that the oscillator is frequency agile.

The oscillator utilizes a programmable digital PLL circuit driven by external programming that allows the user to select the desired frequency with high accuracy. This PLL circuit helps sustain a constant frequency difference between the programmed output frequency and the reference frequency of the crystal, and also helps to reject any jitter noise away from the desired output frequency. The design of the PLL circuit also provides a high level of spectral purity, providing superior transient performance and better immunity to EMI/RFI and power supply noise than other conventional oscillators.

The SIT3809AI-D-18NZ includes a voltage regulator that allows the oscillator to be operated with a wide range of voltage levels and provides excellent thermal stability performance. The oscillator also features a fast lock-in time, along with low power consumption for extended operation time. It is designed for maximum versatility, with a wide selection of frequency range options, programming modes (RS232, SPI, etc.), and user programmable options.

The SIT3809AI-D-18NZ oscillator offers excellent performance for a wide range of applications, including test and measurement, communications, instrumentation, defense, military, and avionics systems. The oscillator provides reliable and precise frequency control for maintaining synchronization in multi-core infrastructure and telecom networks, as well as in critical applications that require high stability, such as wireless communication systems. The programmable frequency output of the oscillator also ensures compatibility with a wide variety of digital systems and interfaces, such as microcontrollers, GSM/CDMA systems, digital signal processing systems, Ethernet networks, and more.

The SIT3809AI-D-18NZ programmable oscillator is an ideal choice for a variety of applications requiring highly precise frequency control and reliability. Its combination of a quartz crystal and an advanced PLL circuit ensures stable frequency operation and exceptional performance for a wide range of applications. Moreover, the oscillator’s small size and low power consumption make it a great solution for portable and battery-powered applications.

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