TD-22.5792MCD-T

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Oscillators are electrical circuits that work as a steady signal generator for various applications. TD-22.5792MCD-T is an oscillator from Rakon, used mainly for Satellite navigation, Global Positioning System (GPS) and Time Division Multiplexing (TDM) applications. This oscillator uses a technology called Temperature Compensated Crystal Oscillator (TCXO) that enables it to have clock frequencies that remain stable even under varying temperatures and other external disturbances. This article will discuss the application fields and working principles of TD-22.5792MCD-T.

The TD-22.5792MCD-T oscillator is mainly used in GPS and satellite navigation systems as it provides extremely precise timing information. This device has a jitter performance of 7 rms, and false lock prevention for accurate operation in mobile systems. The Standby Current Consumption (SCC) for this oscillator is 0.01 pA, making it quite efficient in terms of energy consumption. This oscillator also features a 1ppm frequency stability over a temperature range of 0 °C to +50 °C which makes it very suitable for TDM applications. The operating voltage for TD-22.57592MCD-T is 5V with ±0.5% accuracy for current consumption.

The working principle of TD-22.5752MCD-T is based on an oven-controlled crystal oscillator (OCXO), which in itself is based on a quartz crystal resonator. This quartz crystal resonator has an oscillation frequency that is proportional to the applied current, and thus can be used to accurately measure temperature changes. When the temperature changes, the frequency of the resonator changes accordingly, and this is compensated for by the OCXO oscillator. The OCXO in turn is used to regulate the crystal oscillator that is used in the TD-22.5752MCD-T. This device has two crystal resonators, a quartz crystal and a ceramic resonator, that are both positioned inside an oven.

The quartz crystal is used to create the clock frequency of the oscillator, while the ceramic resonator is used to protect the quartz crystal from external temperature variations. The ceramic resonator is a PTC thermistor (positive temperature coefficient), which acts like a thermostat and compensates for changes in temperature. When the ceramic resonator detects a change in temperature, it triggers an electrical signal that causes the quartz crystal to change its frequency in accordance with the changed temperature. This ensures that the output frequency of the oscillator is compensated for even in the presence of external temperature variations.

TD-22.5752MCD-T also features an automatic power control (APC) circuit. This circuit works by constantly monitoring the electric current draw on the oscillator and adjusting the output voltage accordingly. The APC circuit ensures that the output voltage remains stable regardless of temperature variations or other environmental conditions. This makes it ideal for use in mobile applications like GPS and satellite navigation.

In conclusion, TD-22.5752MCD-T is an efficient oscillator that is highly accurate in its timing measurements and is mainly used in GPS and satellite navigation applications. This oscillator is based on an OCXO, which is a quartz crystal resonator that is surrounded by a ceramic resonator to protect it from temperature variations. Furthermore, this oscillator also features an APC circuit to regulate the voltage output level for stable operation. All these features make the TD-22.5752MCD-T a reliable source for oscillators in various applications.

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