TD-12.200MDD-T

Oscillators: TD-12.200MDD-T application field and working principle

TD-12.200MDD-T is a quartz thermostatic oscillator and a crystal-controlled oscillator that follows the basic principles of electrical oscillators. As a type of Temperature Compensated Crystal Oscillator (TCXO), it greatly improves the traditional quartz crystal oscillator\'s frequency stability. TD-12.200MDD-T as a precision oscillator, has a wide range of applications in the fields such as timing, frequency synthesis, and communications. It is often used for medium and high stability electronic equipments, such as radar and satellite, as well as for A/D and D/A Converters.

Working principle

Like its counterparts, TD-12.200MDD-T operating at fixed frequencies is based on the theory of resonant circuits, and its basic principle is that the frequency and amplitude of the oscillations depend on the characteristics of the circuit and the power supply. When an alternating voltage is applied to the quartz crystal, a mechanical vibration would be produced due to its piezoelectric effect. This vibration, in turn, generates an electrical signal that oscillates at a certain frequency. The frequency of this electrical oscillation is determined by the size of the quartz crystal, and its resonant circuit.

TD-12.200MDD-T makes use of a particular quartz piezoelectric crystal together with a resonant circuit. The combination of the quartz crystal itself and its resonant circuit creates a quartz crystal oscillator, sometimes known as a solid state cavity resonator. The quartz crystal is an incredibly stable and precise oscillator.

Temperature compensation

Temperature has a major effect on the frequency of a crystal oscillator; even very small temperature changes can affect a crystal oscillator\'s frequency. To minimize this effect, the particular type of quartz crystal used in TD-12.200MDD-T is designed to have a much smaller temperature dependency than other crystals. The crystal is then placed in a temperature compensated, or thermostatically controlled, oven.

The temperature compensated oven functions by measuring and controlling any temperature changes, and compensating for the effect of any changes in the crystal\'s temperature, keeping the crystal at constant temperature. This effectively compensates for any variations in the crystal\'s frequency. This ensures that the frequency of the oscillator is as consistent as possible, even under extreme temperature changes.

Conclusion

TD-12.200MDD-T is a temperature compensated crystal oscillator that is designed to provide optimal frequency stability, even under extreme temperature changes. It is often used for precision timing, frequency synthesis, communications, A/D and D/A Converters and several other applications. Its accuracy is its main advantage due to its temperature compensated oven that ensures the crystal oscillator maintains a consistent and precise frequency.