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Programmable Oscillators

The Programmable Oscillator (PO) is a versatile and common component used for timing, frequency and other applications. The SIT8009BIE11-18E is one of the most popular and widely used programmable oscillators in the market. Below will give a basic overview on the SIT8009BIE11-18E application field and details of its working principle.

Application Fields

The SIT8009BIE11-18E offers frequency ranging from 1MHz to 18MHz and delivers high precision and quality. This makes it a suitable component not just for general-purpose timing, but also a wide range of areas where precise timing and/or frequency is a requirement. The main applications of the SIT8009BIE11-18E include clock generator for microcontrollers, modems, transmitters and receivers, high-speed and low power components, and synchronous digital systems in communication networks.

Working Principle

The SIT8009BIE11-18E Programmable Oscillators uses a quartz crystal oscillator with CMOS BiCMOS chips to generate a stable output frequency within a desired range. The working principle of the device is based on digital frequency synthesis technique, where frequencies up to 18MHz can be obtained by digital division of the reference frequency between 4MHz and 20MHz. The quartz crystal oscillator is tuned to reference frequency, while an on-chip programmable frequency divider provides the desired output frequency using a pair of Port pins. These Port pins allow a user to program the output frequency of the oscillator.

The SIT8009BIE11-18E also features an on-chip voltage-controlled oscillator (VCO) which is used to provide tight control of the output frequency. Using the VCO, users can fine-tune the output frequency over a wider range by varying the frequency control voltage. It is also equipped with output enable/disable pins to turn the oscillator off or on when needed.

The SIT8009BIE11-18E is a reliable and cost-efficient Programmable Oscillator, suitable for a variety of applications requiring precision timing and/or frequency. In addition to its excellent accuracy and performance, it also consumes less power compared to other programmable oscillators in the same category.

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