ASDMB-14.31818MHZ-EC-T

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Oscillators are devices that can produce a continuous output waveform. Typically, they are used to accurately produce a cyclical waveform for processing or timing applications. One of the most common types of oscillators is the ASDMB-14.31818MHz-EC-T oscillator, which utilizes a quartz crystal to generate a highly stable frequency output.

The ASDMB-14.31818MHz-EC-T oscillator is a miniature, temperature compensated quartz crystal oscillator (TCXO) designed for use in embedded systems. It uses a standard 14.31818MHz frequency offset from 10MHz, rather than the typical 10.000MHz offset, for improved accuracy in GPS applications. It operates over the temperature range -40°C to 85°C, and it provides low jitter and stability from 0.5ppm over that temperature range. The oscillator also offers good phase noise performance with a typical phase noise of -140dBc/Hz @ 1KHz.

At the heart of the ASDMB-14.31818MHz-EC-T oscillator is an AT-cut quartz crystal. The crystal has a high degree of dimensional stability and a wide range of temperature coefficients of frequency, allowing it to generate very accurate frequency signals over a wide range of temperatures and frequencies. In the oscillator, the quartz crystal is controlled by an on-chip oscillator circuit that is stabilized using a combination of temperature compensation and temperature averaging.

The oscillator circuit operates by carefully driving the crystal with a low-amplitude current source. This current source is used to excite the crystal into producing a consistent frequency signal. The oscillator circuit is then able to measure the frequency and generate an error signal that is fed back to the driving circuit. This error signal allows the circuit to stabilize the output frequency, ensuring that it is accurate and consistent over the entire temperature range specified.

The ASDMB-14.31818MHz-EC-T oscillator is well suited to a range of embedded applications, such as IoT sensors, wearables, medical devices, and consumer audio. It provides a highly stable frequency output that is ideal for timing and synchronization applications. The oscillator is also ideal for GPS applications, as the 14.31818MHz frequency offset is known to provide improved accuracy. Additionally, the oscillator provides a low jitter and long-term drift performance, making it ideal for a variety of precision timing applications.

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