SIT9002AC-23H33DG

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Programmable oscillators have become more prominent in recent years. These oscillators provide a versatile way of generating signals at frequencies determined both by parameter settings and by applied external voltages. A common type of programmable oscillator is SIT9002AC-23H33DG, a voltage-controlled crystal oscillator (VCXO) module featuring a programmable frequency range of 1kHz to 200MHz. The device largely consists of two components: an external crystal and integrated circuit (IC) with voltage-controlled oscillator (VCXO).

In operation, the VCXO drives the external crystal and produces an output according to the frequency determined by the external voltage. This voltage is provided by an external voltage-controlled current source (VCCS) and a driving transistor, which are responsible for regulating the crystal oscillation frequency.

The SIT9002AC-23H33DG is used in a variety of applications, such as clock generation, time-domain multiplexing, digital synthesizer-based systems, and cellular base station sites. The device offers excellent frequency stability under temperature, shock and vibration. Its programmable frequency range provides the user with flexible frequency control, allowing for precise control of timing and frequency applications.

The SIT9002AC-23H33DG utilizes an automated oscillation frequency setting feature. This feature allows the user to adjust the output frequency by simply connecting the external power supply and frequency selection pins and adjusting the applied voltage. Once set, the VCXO and crystal will maintain a steady output frequency without the need for further manual frequency tuning or calibration.

In addition, the SIT9002AC-23H33DG programmable oscillator also features an on-chip voltage-controlled filter (VCF) and an external filter that can be used to further customize the output. The VCF allows the user to control the amplitude and phase of the output signal, and the external filter provides further attenuation of unwanted harmonics.

The SIT9002AC-23H33DG can also be used in applications that require more precise frequency regulation due to changing temperatures, power supply voltages, or a combination of both. The device utilizes temperature-compensated gain control, which allows it to maintain a stable frequency output even when the ambient temperature varies. Furthermore, the device is able to compensate for power supply voltage changes and create a stable output frequency over a wide range of voltages.

The SIT9002AC-23H33DG programmable oscillator is an excellent solution for a variety of applications, such as clock generation, frequency synthesis and cellular base station sites. It provides a versatile frequency range, as well as excellent frequency stability and adjustable output voltage. In addition, its temperature compensation, power supply compensation, and on-chip VCF provide the user with further flexibility in their application.

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