ASTMHTD-20.000MHZ-AC-E-T3

Oscillators are electronic circuitry that produce a continuous waveform. The ASTMHTD-20.000MHZ-AC-E-T3 is a type of oscillator for application in Frequency control and timing circuit, or Frequency Measurement and Pulse Generation applications.

Applications

The ASTMHTD-20.000MHZ-AC-E-T3 oscillator is designed for use in Frequency control and timing circuits. It provides excellent frequency stability and low phase noise under a wide variety of conditions. The oscillator is designed to be used in applications such as Frequency Measurement and Pulse Generation, Radio Control, Data transmitters and Receivers, Global Positioning Systems (GPS), and Communications circuits.

The ASTMHTD-20.000MHZ-AC-E-T3 is also ideal for use in high-performance systems such as radar and sonar, test and measurement, as well as professional, medical, and military applications. The oscillator is capable of operating from a wide range of supply voltages from 2.0V – 5.5V and can provide up to 50mA of output current at 20MHz.

Working Principle

The ASTMHTD-20.000MHZ-AC-E-T3 oscillator is a Pierce oscillator. A Pierce oscillator is an electronic oscillator where the oscillation is produced by the nonlinear behavior of an amplifier’s amplifying element, usually a BJT. This nonlinear behavior is caused by the injection of a small amount of feedback from a pair of cross-coupled pair transistor to the BJT. The BJT is biased at its center point of the Collector-Emitter voltage, less than 0.7V, allowing it to operate in both linear and non-linear regions.

The feedback in the Pierce oscillator produces two frequencies, an even harmonic and an odd harmonic of the oscillation frequency. The even harmonic is a frequency much higher than the signal frequency, and the odd harmonic is just the signal frequency. The harmonic frequencies are determined by the gain of the amplifier, the type of amplifier used and the frequency of the signal.

The output of the Pierce oscillator is then filtered for frequency purity, as well as for other electrical deficiencies such as noise, distortion, and mismatch. The filtered output is then passed to the oscillator’s power output stage, where it is used to produce an alternating current (AC) to a load. The load is usually a capacitor or an inductor, which can be used to produce a signal suitable for use in many applications.

Conclusion

The ASTMHTD-20.000MHZ-AC-E-T3 oscillator is a very versatile and reliable oscillator for applications in Frequency control and timing circuits, as well as Frequency Measurement and Pulse Generation applications. It is also ideal for use in many high-performance systems such as radar, sonar, test and measurement, and professional, medical, and military applications. The oscillator is capable of providing excellent frequency stability and low phase noise, and is designed to operate from a wide range of supply voltages from 2.0V – 5.5V.