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Programmable Oscillators

The SIT9005ACT1G-28DJ is a member of the family of programmable oscillators, also called digitally programmable oscillators. These circuits offer an excellent alternative to the conventional off-the-shelf oscillator designs. They are available in a variety of formats, including the CMOS, PECL and LVCMOS compatible version offered by SIT9005.

Application Field

The SIT9005ACT1G-28DJ programmable oscillator is suitable for many applications, including microcontroller (MCU) designs, digital signal processing (DSP) systems, modems, and power management controllers. It can also be used in video, audio, and other multimedia applications. The device is designed to be integrated into a wide variety of platforms, such as mobile phones and portable media players. The oscillator is particularly suited for applications that require low-power and cost-effective solutions. It has an operating temperature range of -40º to +85º C, making it suitable for use in a wide range of industrial and consumer applications.

Working Principle

The SIT9005ACT1G-28DJ programmable oscillator utilizes a proprietary digital phase-locked loop (PLL) technique to provide extremely low jitter and low power operation. The PLL is programmed with a “seed” value which determines the frequency of the oscillation. This seed value can be changed ‘on the fly’ for applications that require a dynamically adjustable oscillator frequency. The oscillator also features an adjustable frequency range of 2 to 208 MHz, as well as a 3.3V or 5V compatible low voltage power supply.

The device can be programmed with a wide range of output frequencies with an accuracy of ±50ppm. It offers a variety of features, including a programmable start-up time, selectable active or standby modes, and an adjustable supply voltage range. The device also features a power-down mode and a selectable low noise mode, which enable the device to operate in ultra-low-power applications.

Overall, the SIT9005ACT1G-28DJ programmable oscillator is a versatile and cost-effective solution for many applications. It provides low-power operation and a wide frequency range with excellent accuracy and jitter performance.

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