4MA312500Z3AACTGI

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Oscillators

Oscillators are electronic circuits which generate a continuous output signal in the form of sinusoidal waves, square waves or other waveforms. They are widely used in many areas, such as radio receivers, frequency synthesisers, signal generators, digital filters and power amplifiers. The 4MA312500Z3AACTGI is an example of a type of oscillator that is used for frequency stability and low phase noise performance.

4MA312500Z3AACTGI application field

The 4MA312500Z3AACTGI device is an integrated voltage-controlled crystal oscillator providing a frequency reference solution for microwave communication systems. It is designed to operate from 4.4V to 5.5 VDC and offers low phase noise, excellent short term stability within a wide temperature range of -30°C to +85°C. Furthermore, its frequency accuracy (3ppm) and low power consumption (2.1 mA) make it suitable for use in portable applications.

The 4MA312500Z3AACTGI device is optimised for use in frequency synthesisers, radio receivers, satellite communications, point-to-point microwave systems, local area networks and military communication systems.

4MA312500Z3AACTGI working principle

The 4MA312500Z3AACTGI device combines a low noise voltage controlled oscillator (VCO) and a fixed-frequency X-tal oscillator. An LC tank integrates four active transistors and is used to generate the stable and low noise VCO signal. As the VCO frequency output is proportional to the applied voltage, the device can be fine-tuned by external reference clock and IC components.

The 4MA312500Z3AACTGI device features an output buffer with low power consumption. This buffer ensures that the oscillator frequency can be accurately controlled, even under low power conditions, by controlling the bias voltage.

The 4MA312500Z3AACTGI is fundamentally different from other VCOs, as it has both low phase noise and high stability over temperatures. The device features a very low power consumption (2.1 mA) and low output impedance (4.5 ohms). This ensures that the output frequency remains stable and unaffected by external noise sources.

Conclusion

The 4MA312500Z3AACTGI is an ideal oscillator for frequency stability and low phase noise performance. It is suitable for use in frequency synthesisers, radio receivers and military communication systems, as well as many other applications. Thanks to its low power consumption, low output impedance and excellent temperature stability, the 4MA312500Z3AACTGI ensures that the output frequency remains constant and unaffected by external noise sources.

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