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Programmable Oscillators

SIT9002AC-08H25EQ Application Field and Working Principle

Programmable oscillators are electronic components that generate precise frequency output with a relatively small size. Variations in the oscillator\'s output frequency can be programmed by changing its internal capacitors and resistors. The SIT9002AC-08H25EQ series is a precision temperature compensated quartz crystal programmable oscillator (TCXO), which is widely used in a variety of timing and frequency control applications due to its high performance and reliability. This article will discuss the application fields and working principle of the SIT9002AC-08H25EQ programmable oscillator.

Application Field

The SIT9002AC-08H25EQ series can be used in applications that require precise timing and frequency control. It is especially suitable for electronic systems that require a stable frequency output with high accuracy and low power consumption. This includes telecom, aerospace and aviation, information technology, as well as GPS and navigation systems.

The SIT9002AC-08H25EQ series is designed with a low-voltage power supply, effectively reducing power consumption by up to 25%. This allows it to be used on equipment with smaller power supplies, while still providing reliable performance. The series features temperatures stability of ±0.2ppm maximum, and frequency variability of ±5ppm maximum. These features make it ideal for applications that require precise and repeatable frequency output.

Working Principle

At its core, the SIT9002AC-08H25EQ series consists of a quartz crystal and an oscillation circuit. The quartz crystal, which acts as the frequency reference for the oscillator, vibrates when the radio-frequency AC signal from the oscillation circuit reaches a certain frequency. This alternating vibration translates into electrical oscillations, which are then output from the oscillator as a precise frequency signal.

The SIT9002AC-08H25EQ series utilizes a temperature-compensated quartz crystal, which allows it to generate an output with greater accuracy and stability, even when operating in temperature environments with wide fluctuations. This temperature compensation is accomplished through a thermistor-based temperature compensation circuit, which adjusts the frequency output of the oscillator to ensure stable and precise performance in any temperature range.

Conclusion

The SIT9002AC-08H25EQ programmable oscillator is an ideal choice for applications that require precise timing and frequency control. It is designed for low power consumption and offers excellent performance in temperature environments with wide fluctuations. The thermistor-based temperature compensation circuit allows it to generate an accurate and stable frequency output even in extreme temperatures. As such, it is well-suited for many electronic systems, such as telecom, aerospace and aviation, information technology, GPS and navigation systems.

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