ASVMPLP-156.250MHZ-LR-T

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Application Field and Working Principle of ASVMPLP-156.250MHZ-LR-T

ASVMPLP-156.250MHZ-LR-T is an oscillator module designed for the industrial and defense fields. It is specially designed for use with high-frequency radios, military applications, and other specialized applications. It includes advanced features such as a frequency synthesizer, phase locked loop (PLL), temperature compensation, and a temperature-compensated voltage-controlled oscillator (TCVCXO).

The oscillator module is used in a variety of applications that require vibration, temperature, and pressure sensing, such as those in industries involving switching, control, and communication. Its temperature compensation feature prevents frequency drift, which is a common problem in these applications.

Working Principle

The module uses a voltage-controlled oscillator (VCO) to generate an output signal with a pre-determined frequency. The VCO\'s frequency is set by an external control voltage and it is tuned by adjusting the voltage applied to it. The frequency of the output signal is continuously monitored by an integrated frequency synthesizer. The output frequency is corrected if it varies from the expected frequency.

The frequency synthesizer uses a phase locked loop (PLL) in which the reference clock signal provided by a quartz crystal is compared with the signal being driven by the VCO. If any difference is detected, the PLL adjusts the control voltage for the VCO until the output signal is in lock with the reference signal.

The module also includes a crystal oscillator, which is connected to the VCO in order to regulate the frequency. The frequency is adjusted by adjusting the value of the two capacitors connected to the output of the crystal oscillator. The oscillator output is then compared to the reference signal provided by the frequency synthesizer. If the oscillator frequency is off, the control voltage is adjusted accordingly.

The thermal stability of the module is provided by a temperature-compensated voltage-controlled oscillator (TCVCXO). This component adjusts the output voltage of the oscillator according to the temperature to ensure that the output frequency is not affected by environmental temperature changes. The TCVCXO is designed to maintain a frequency stability of ±2.5 ppm over a temperature range of -40 to +85 °C.

Conclusion

The ASVMPLP-156.250MHZ-LR-T oscillator module from DAVE Electronics is designed for applications in the industrial and defense fields that require accurate and stable frequency output across a range of temperatures. It includes an integrated frequency synthesizer, a phase lock loop, temperature compensation, and a temperature-compensated voltage-controlled oscillator. This makes it a reliable and robust solution for these demanding applications.

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