SIT9005ACA2H-25SG

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Programmable Oscillators: SIT9005ACA2H-25SG application field and working principle

Programmable oscillators are essential components in modern digital electronics, usually controls the timing and frequency of signals within the circuit design. Their small size and increased accuracy compared to quartz crystal oscillators are highly valued by RF hardware designers, automotive and industrial engineers. In this article, we will discuss the application field and working principle of SIT9005ACA2H-25SG, which belongs to programmable oscillators.

Application Field

SIT9005ACA2H-25SG is a low-profile CMOS programmable oscillator with 2.5V, up to 200MHz clock frequency. It is mainly used in applications that require an accurate and reliable clock signal, like automotive applications, timing circuits, network communication equipment, and USB Gen2.x applications. This oscillator provides excellent jitter performance of 0.25psRMS/2GHz integrated LVDS/LVPECL outputs, and ultra-low supply current of 15mA, which makes it a perfect frequency source for automotive communications, high-speed signaling, and Ethernet applications.

Due to its robust package and low power consumption, it can also act as a frequency source for medical systems, gaming devices and embedded industrial computing. The programmable oscillator also provides a wide range of temperature stabilities with operating temperature ranging from -40°C to 85°C. This makes it an ideal frequency source for various temperature sensitive applications.

Working Principle

The SIT9005ACA2H-25SG programmable oscillator is based on a crystal oscillator that includes a crystal and oscillator circuitry. The oscillator is connected to the crystal in order to detect resonance of the crystal at specific frequency. Its internal circuitry works as the driving voltage to the crystal, and can vary the frequency according to user’s need.

The SIT9005ACA2H-25SG programmable oscillator is further enhanced with improved features like temperature stability, linear frequency response, superior jitter and immunity to voltage variations. These features make the SIT9005ACA2H-25SG an excellent choice for applications requiring a frequency source with constantsignal pining. It also provides increased immunity over temperature and voltage range changes.

The main components of the programmable oscillator are crystal resonator and two external controlling components, namely resistor and capacitor. The resistor is used to limit the current flowing through the crystal, and the capacitor is used for frequency selection. During operation, the oscillator produces an alternating current at a specific frequency which is determined by the particular crystal used. The resistor and capacitor are used to adjust the frequency within certain limit.

The SIT9005ACA2H-25SG programmable oscillator is powered by an external power source and the frequency is set by the user through external resistor and capacitor. The frequency is user- adjustable and can be tuned between 160 kHz and 200 MHz. This frequency can be adjusted to deliver an accurate clock signal which is valuable for a variety of applications.

In summary, the SIT9005ACA2H-25SG is highly accurate, low-profile CMOS programmable oscillator. It is mainly used in automotive applications, timing circuits, network communication equipment and USB Gen2.x. Its jitter performance is excellent and its ultra-low supply current makes it an excellent frequency source for medical systems and gaming devices. It operates between 160 kHz and 200 MHz and its frequency is user- adjustable and set by external resistor and capacitor.

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