ASCO1-54.000MHZ-L-T3

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Application Field and Working Principle of ASCO 1-54.000MHZ-L-T3 Oscillator

The ASCO 1-54.000MHZ-L-T3 is an oscillator that operates on an analog frequency range of 1-54.000 MHz and is ideal for providing the reference signal for applications such as frequency control and generation of a fixed frequency signal with low phase and amplitude jitter. It is a quartz-crystal-driven frequency control circuit providing both negative and positive control voltage capabilities in corresponding to 0 to ±15 kHz phase variation range. Other features of this oscillator include low supply current, TTL compatible outputs and accuracy of up to + 0.1 kHz at the operating frequency range.

The ASCO 1-54.000MHZ-L-T3 Oscillator is typically used for telecom applications that require low phase noise high stability at wide temperature range, and where absolute frequency accuracy is not as important, such as in clock distribution systems and for base station radios. Besides this, the oscillator is suitable for military and aerospace applications, industrial control, medical equipment, and a variety of test and measurement applications.

Working Principle

The fundamental working principle of this oscillator is a combination of electrostatic and electrothermal effects. The voltage that drives the oscillator is directly proportional to the temperature of the device, resulting in a stable oscillation frequency. The oscillator is further stabilized by the quartz crystal, which has a specific oscillation frequency. Since the quartz crystal does not change its frequency with temperature, it can maintain the same oscillation frequency over a wide range of temperatures.

The frequency of the oscillator is set by the combination of the frequency-determining components. This includes the quartz crystal\'s resonant frequency, the trans-impedance amplifier\'s gain, and the external timing elements. As with most crystal oscillators, a feedback circuit is used to generate the oscillation. The feedback consists of a capacitor connected in series with the crystal and the trans-impedance amplifier, and the oscillation is sustained by the voltage drop across the capacitor.

The output of the oscillator has two states, either high or low, depending on the frequency set by the feedback circuit. This information is then passed to the output, where it is converted to a TTL-compatible voltage level. This output signal is then used for frequency control and generation of a fixed frequency signal with low jitter.

Conclusion

In conclusion, the ASCO 1-54.000MHZ-L-T3 oscillator is designed for providing reference signal to many different applications. It combines several fundamental principles, such as electrostatic and electrothermal effects and quartz-crystal frequency determination, to work efficiently. The output of the oscillator is adjustable based on the frequency components of the circuit and can be easily converted into a TTL-compatible voltage level. While most commonly used for telecom applications, the oscillator can also be conveniently used for aerospace, industrial, and medical equipment applications.

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