TC-100.000MCD-T

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Oscillators

TC-100.000MCD-T is an oscillator component which combines crystal oscillator and temperature compensated crystal oscillator (TCXO). It is capable of providing stable clock output frequency over temperature range of -20 to +85ᵒC, with performance characteristics of high frequency stability, excellent phase noise, and low power consumption. It is widely used for the generation of stable reference clock signals ranging from 10MHz to 100MHz in consumer electronic devices, automotive applications, medical devices, and industrial automation. The following sections provide an overview of the application fields and working principle of TC-100.000MCD-T.

Application Fields

The TC-100.000MCD-T is suitable for multiple application fields due to its stability over a wide temperature range, high frequency stability, low power consumption, and excellent phase noise. Common applications include:

• Test and measurement instruments
• Communications
• Consumer electronics
• High-reliability industrial systems
• Automotive electronics
• Medical devices

It can be used to provide a stable time reference in ultra-precise timing systems, frequency and phase comparators, clock generation services in various communication and consumer electronics, and automotive applications requiring an extremely low phase noise for improved signal integrity. In addition, it is suitable for use in test and measurement equipment for accurate timing and precision measurement.

Working Principle

The TC-100.000MCD-T consists of a oscillator, buffer amplifier, and temperature compensation circuit. The oscillator is a quartz crystal with piezoelectric properties that vibrates at a set frequency when a small voltage across the electrodes. The frequency is determined by the size, shape and material of the crystal. The buffer amplifier is used to amplify the signals from the oscillator to drive external circuits. The temperature compensation circuit is used to offset the effect of the temperature-caused frequency shifts of the oscillator.

The temperature compensation circuit uses the positive temperature coefficient of the crystal to provide a controlled output frequency within the specified temperature range. A reference frequency is set by the accurate temperature sensing unit (TSU). The reference frequency and the oscillator output are compared and a compensation voltage is generated. The compensation voltage is then used to adjust the oscillator output frequency such that it is equal to the reference frequency over the specified temperature range.

To further reduce the phase noise of the oscillator, a closed-loop temperature control system is used to stabilize temperature within a small tolerance band. This helps to minimize the effects of external environmental factors like humidity and temperature fluctuation which can cause the frequency of the oscillator to drift significantly. Thus, the TC-100.000MCD-T is capable of providing a stable reference clock over a wide temperature range while exhibiting low phase noise performance.

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