SIT9120AI-1C3-33E133.330000T

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Oscillators are electrical circuits that can generate and maintain oscillatory or repetitive signals for long periods of time without requiring external driving sources [1]. SIT9120AI-1C3-33E133.330000T is a type of oscillator used to generate stable frequency signals that can be precisely controlled. This type of oscillator is used in various applications, such as frequency synthesisers, precision clocks, medical devices, and radio frequency (RF) modules.

Application field

SIT9120AI-1C3-33E133.330000T is designed for precision clock generation and frequency synthesisers in mobile and wireless product applications. The oscillator offers the advantages of a 4-pad package design with a small footprint of 0.45mm x 0.45mm, so it can be easily embedded within a mobile or wireless system. Additionally, since it is a 3V voltage-controlled oscillator (VCO), it is ideal for applications that require a higher frequency accuracy than a traditional quartz-based oscillator but at a lower cost. It is suitable for automotive, Bluetooth, and RF module applications.

Working Principle

In order to achieve its stable frequency performance, SIT9120AI-1C3-33E133.330000T utilizes a temperature compensated voltage-controlled crystal oscillator (TCVCXO) architecture. This type of oscillator uses a combination of resistors, capacitors, and inductors to regulate the frequency according to the applied voltage. The oscillator is built around a voltage-controlled crystal which is then connected to a low-pass filter. The filter is used to block any unwanted noise signals that may affect the frequency of the generated signal. The generated signal is then amplified and then routed through a crystal control loop. The control loop monitors the output of the amplifier and adjusts the frequency if needed to maintain a stable output signal. As a result, the oscillator generates a very stable, low-jitter frequency signal.

In conclusion, SIT9120AI-1C3-33E133.330000T is a compact, low-cost, and high performance temperature compensated VCO that is suitable for precision clock generation and frequency synthesisers in mobile and wireless applications. Its temperature compensation architecture ensures a stable, low-jitter frequency output even in high temperature environments, making it ideal for automotive, Bluetooth, and RF module applications.

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