550AM714M420DGR

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Oscillators: 550AM714M420DGR

Oscillators are electronic components that generate a periodic, alternating current of precise frequencies, used as a reference signal in radio frequency and feedback applications. A signal generator, also known as an oscillator, is an electronic device that produces a continuous or discrete-time signal at a frequency specified by the user. The output is typically a sine wave, sawtooth, triangle or square waveform. Oscillators are used in a wide variety of applications, ranging from electronic musical instruments to electronic test equipment and medical devices.

Application Field

The 550AM714M420DGR is a programmable, frequency-agile oscillator developed by AVerica. The oscillator is well-suited for frequency agile applications, such as outdoor communications, satellite communications, and automotive applications. This oscillator provides a wide range of frequencies, with a frequency resolution of 0.1 Hz and a frequency range of 4 MHz to 420 MHz. Programmable parameters such as frequency, phase and period can be adjusted over the range of these frequencies.

Working Principle

The 550AM714M420DGR oscillator works by using an integrated low phase noise voltage-controlled oscillator (VCO) to generate the specified frequency. The VCO is then locked to a reference frequency oscillator and the output is tracked relative to the reference frequency. The frequency is locked on a programmable loop filter, which is adjusted to the desired frequency and can then be measured using a frequency counter. The programmable loop filter is adjustable and can be used to achieve a specific output frequency range. The output amplitude is adjustable, and is monitored by the use of flashing LEDs.

The 550AM714M420DGR oscillator operates in a feedback system, where it is connected to an amplifier that amplifies the signal and sends it back to the VCO. This allows the frequency to be controlled by a microprocessor or a programmable logic device. The programmable logic device is used to adjust the parameters of the loop filter, such as the gain, bandwidth, and the phase margin. Once the phase margin is set, the output frequency can be adjusted by varying the control voltage.

In addition, the 550AM714M420DGR oscillator offers an auxiliary output port that is designed to provide the user with an additional reference signal. This output is typically used to synchronize with other oscillators in a system. An alarm output port is also provided, which can be used to indicate an out-ofband frequency or phase shift.

The 550AM714M420DGR oscillator is an excellent choice for a wide range of frequency agile applications, due to its compact size and programmable parameters. It is a reliable, precision frequency generator that is capable of generating low-noise signals with a high degree of accuracy.

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