SIT9005ACU1H-30EB

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Programmable oscillators can offer clock frequencies within a pretty wide range. And once an oscillator is programmable, it has a good flexibility to be configured and adjusted for above mentioned applications. This paper will discuss about one specific and programmable oscillator called SIT9005ACU1H-30EB and its application field and working principle.

SIT9005ACU1H-30EB are versatile oscillators which can provide options from 8kHz to 40MHz in fundamental mode and from 8kHz to 200MHz in 3rd overtone mode. It features with low power consumption, high stable performance and wide operating temperature range. In addition, its built-in prescaler allows specific divide rate of 256 and 65536 in fundamental mode, and 128 and 32 in 3rd overtone mode. The devices come in 2.5×2.0mm SMT packages.

One application of SIT9005ACU1H-30EB is to provide clock signal for android devices. By using this type since it provides a wide range and low power consumption, it will support the power management of mobile phones. And this benefit can apply to various mobile apps. In addition, the ability of arbitrary choice of frequency and variable duty cycle makes it applicable to the systems that have low power and noise requirements.

The working principle of SIT9005ACU1H-30EB is straightforward, combining on-chip high-performance PLL and SPI programmable oscillator. The frequency output ranges from 8KHz up to 240MHz, while only 19 frequencies points are available. Through programming registers of the 7-bit PLL (SPI interface), the frequency and duty cycle can be adjusted. The device also accepts some frequency, phase and duty cycle values from the internal or external memory to guarantee the stability.

SIT9005ACU1H-30EB is one of the crucial components for any programmable oscillator. This reliable, low power consumption and wide range oscillator is popular in many applications, especially for mobile devices. And its working principle is just as important, providing low jitter and wide range of frequency output.

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