SIT9005ACL2G-33NK

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Programmable oscillators are electronic components that depend on a fixed but an adjustable frequency reference. They are used to create periodic signals frequency accuracy, stability and phase noise performance. Examples of these oscillators include the Sit9005ACL2G-33NJ which has a comprehensive range of applications within industrial and aerospace settings.

The Sit9005ACL2G-33NJ is a low phase-noise programmable oscillator that uses a 33.33 MHz fundamental frequency reference. It has an over-voltage protection design, low jitter, low switching time and a ±20 ppm frequency stability. It is suitable for precise frequency control systems, radio and TV broadcasting, telecom base stations, system clock sources, and medical devices.

In terms of architecture, the Sit9005ACL2G-33NJ is an XO (crystal oscillator) Programmable oscillator mounted into a 5mm x 7mm SMD package and operating in the range of 3.3Vdc (nominal). The oscillator has a temperature range of -40°C to +85°C. The oscillator includes an application-specific integrated circuit, a low-noise inductor, a resistor, and a crystal chip.

To set the output frequency, the Sit9005ACL2G-33NJ programmable oscillator uses a four-pin programming interface. This interface is connected to the corresponding pins of the programmable oscillator, and through the application-specific integrated circuit (ASIC), the output frequency can be changed. The programming pins are internally connected to a capacitor in the programmable oscillator and this capacitor is used to control the frequency of the output. This allows for fine tuning, as the user can program the output frequency by changing the capacitance.

The working principle of the Sit9005ACL2G-33NJ can be divided into different stages. The first stage is the reference oscillator stage that is used to set the initial reference frequency. In this oscillator stage, the frequency is set by the external oscillator signal that is provided to the circuit. The second stage is the frequency divider stage. This stage consists of a low-noise inductor, a resistor and a crystal chip. The signal from the reference oscillator stage is fed to the frequency divider that selects the frequency that is outputted. The third stage is the voltage-controlled crystal oscillator (VCXO) section. This section includes an ASIC, which is used to adjust the output frequency by controlling the output signal of the frequency divider stage. The output of the VCXO is then amplified by an amplifier and a low noise inductor before being outputted as the required frequency.

The Sit9005ACL2G-33NJ offers a high level of performance and is ideal for applications in industrial and aerospace settings. It provides excellent frequency accuracy, stability and phase noise performance. It also has an over-voltage protection design, low jitter, low switching time and a ±20 ppm frequency stability. As such, it is suitable for high-precision frequency control systems, radio and TV broadcasting, telecom base stations, system clock sources, and medical devices.

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