SIT9005ACT1D-25EG

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Programmable oscillators are useful in a variety of applications, providing high levels of precision, stability and frequency resolution. The SIT9005ACT1D-25EG is a special type of programmable oscillator, designed for use in precision ADC/DAC applications, such as high frequency receivers. Its design enables it to deliver very fast, accurate and reliable frequency performance, ideal for providing the high synchronization flexibility needed for these types of applications.

The SIT9005ACT1D-25EG operates by relying on a quartz crystal, along with several tuning elements, to generate an accurate output frequency from 0.1Hz to 25MHz. The crystal has fixed resonant characteristics that establish the oscillator frequency. Connected to the crystal is a varactor diode, whose voltage determines the amount of capacitance applied to the crystal, changing the output frequency. Also connected to the crystal is a quartz tuning circuit, which further tunes the frequency and maintains accuracy.

The SIT9005ACT1D-25EG is controlled by an on-board Digital to Frequency Analog circuit (DFA). This circuit contains a microprocessor that sets the output frequency according to input instructions. It also contains a voltage control oscillator (VCO) and a programmable divider used to generate an adjustable square wave. The VCO and divider together provide accuracy and stability by allowing the frequency to be adjusted very precisely. This precision and speed makes the SIT9005ACT1D-25EG ideal for use in ADC/DAC applications.

The output frequency of the SIT9005ACT1D-25EG is determined through the combination of the crystal resonant frequency and the varactor diode control voltage. Once set, the frequency can be adjusted as needed by providing a variable control voltage to the varactor diode. This can be done either manually or through the use of an external digital signal. It is also possible to detect the output frequency through the use of an optional external monitor circuit.

The SIT9005ACT1D-25EG is an ideal programmable oscillator for applications requiring high precision and accuracy. The combination of the crystal resonant frequency and the adjustable control voltage allows it to provide very fast, stable and reliable frequency performance, with exceptional accuracy. Its speed and precision make it ideal for use in ADC/DAC applications, providing the necessary synchronization flexibility for these types of applications.

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