SIT9005ACU1G-18DO

Programmable oscillators consist of a wide range of oscillator designs with varying technical specifications which enable the user to customize their device to best suit the needs of their application. This article focuses on the SIT9005ACU1G-18DO (hereafter ‘SIT9005’), chiefly its application field, as well as its working principle.

The SIT9005 is a programmable oscillator, part of the SIT family of product lines offered by SiTime Corporation. This oscillator belongs to the Automotive Class family of oscillators, specifically, they are Automotive Grade parts and ideal for applications in automotive or other fields where signal accuracy, safety and environmental temperature range are all factors to be taken into consideration.The SIT9005 offers frequency ranges from 1MHz to 100MHz and has low jitter of 1psRMS.

The SIT9005 is completely configurable, with a custom frequency range available on request. The DIP-form factor chip features an advanced frequency control and an Input->Output/Output->Input eFuse mem-chipset. It is factory-programmed and tested, preventing errors on the customer’s end. Operating supply voltage range of the SIT9005 is from 1.8V to 5V and operating temperature range is -20C to 85C.

The SIT9005ACU1G-18DO has many application areas, but it is primarily used in automotive and consumer electronics applications such as clock distribution, analog/digital sampling clocks and communication clocks. It is ideal for automotive needs because it has a lower jitter and offers improved clock accuracy over traditional PLLs. It is also ideal for consumer electronics because it provides reliable timing with low power consumption, making it a perfect choice for low power applications.

The working principle of the SIT9005ACU1G-18DO is based on its configurable frequency range and eFuse mem-chipset. The eFuse mem-chipset enables the user to program the device to desired frequencies, and provide output clock signals with varying levels of accuracy. The internal frequency tuning circuit includes a programmable reference clock, which is multiplied and divided to achieve different frequency outputs. This design allows the user to select the desired frequency range and configure the settings within the range, thus allowing them to optimize the performance of their application according to their specific needs.

The SIT9005ACU1G-18DO offers many advantages over traditional PLLs, in terms of performance, configurability and power-consumption. Furthermore, it is available in a range of packages, including DIP and SMD options, allowing the user to choose the right package for a given application. The SIT9005ACU1G-18DO is a flexible and reliable programmable oscillator and an ideal choice for automotive and consumer electronics applications.