SIT9005ACL1D-30DO

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Programmable oscillators are electronic components that generate oscillations or repetitive signals. The SIT9005ACL1D-30DO is one such component and provides periodic signal output precise frequency control through a combination of digital and analog technology. Many other oscillators are readily available on the market, making it difficult to determine which of them is the best fit for your intended application. This article aims to explain the SIT9005ACL1D-30DO’s application and working principle in order to shed some light on why it is the best option.

Application

The SIT9005ACL1D-30DO has been specially developed for use in the industrial, automotive, aerospace and military industries. It is an ideal solution for applications requiring precise frequency control, such as clock signal generation, in these sectors. It can also be used in process control, tuning and test equipment, as well as wherever precise pulses and timing are required.

Working Principle

The SIT9005ACL1D-30DO oscillator comprises a precision quartz crystal element and four capacitors in a special semiconductor package. The crystal is the source of the electrical signal that generates the oscillator output. The crystal, which is the most important part of the oscillator, defines the output frequency and stability. The four capacitors are included to provide the desiredCrystal startup.

The electrical energy from the quartz resonator is then amplified and converted into a square wave output, which is then applied to the base of an external bipolar N-channel Junction FET (JFET) amplifier. This amplifier acts as an impedance converter, transforming the low impedance from the quartz crystal to the higher impedances needed for power and frequency control.

The signal from the JFET is then routed to the base of an external PNP-type power transistor. This transistor amplifies the signal voltage up to 400 V and applies it to the quartz crystal to deliver the necessary drive to keep the oscillator running.

The SIT9005ACL1D-30DO oscillator is also equipped with a selectable power supply. This power supply offers either an AC powered or DC powered operation and can be conveniently adjusted to the desired voltage level. This ensures an optimal operation of the oscillator in various power supply environments.

Finally, an on-board analog-to-digital converter is used to control the oscillator’s frequency/frequency offset. It provides a wide range of frequency selections with a resolution of up to 0.25 Hz. It also allows for the fine-tuning of the oscillator’s output frequency by ± 20%.

Conclusion

The SIT9005ACL1D-30DO is an ideal programmable oscillator for applications requiring precise frequency control in the industrial, automotive, aerospace and military industries. Its combination of precision quartz crystal elements and four capacitors, along with an adjustable power supply and integrated analog-to-digital converter, make it an ideal choice for a wide range of tuning and test equipment and process control applications.

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