SIT9005ACR1G-18ED

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Programmable Oscillators refer to oscillators with some degree of programmability built into a standard oscillator circuit in order to achieve higher levels of performance and flexibility. The SIT9005ACR1G-18ED is a hardware-programmable oscillator IC with low power consumption and reliable package. It is primarily intended for small form factors such as mobile phones, consumer electronics, and automotive electronics.

The major advantage of using a hardware-programmable oscillator IC is its ability to produce multiple frequency outputs from one oscillator, based upon user-configurable parameters. This allows the same core oscillator circuit to be used for multiple applications. It also reduces the components required for multiple frequencies and enables designers to modify the oscillator frequency and output during the design phase.

SIT9005ACR1G-18ED has a 3-wire SPI interface for easy programming with an external microcontroller or FPGA. It is designed with automatic frequency trimming, temperature compensation, and low jitter output frequency. Its 0.5-18MHz low frequency range and 0-90mV adjustable output amplitude makes it suitable for high frequency clock applications.

The working principle of SIT9005ACR1G-18ED includes two key steps. Firstly, the frequency is set by the SPI command, which then triggers the oscillation. Secondly, the system simultaneously implements the dynamic frequency tuning technology and adjusts the output frequency by using the on-chip automatic frequency trimming technology.

The first step begins with an internally generated base frequency, which is output as a self-reference oscillator. The SPIK is then used to control the output frequency through PLL (phase locked loop) and frequency synthesis. This reference frequency can be modulated to any desired frequency by applying the correct SPI command.

The second step is to adjust the oscillator frequency to a fine-tuned frequency. The SIT9005ACR1G-18ED features automatic frequency trimming and temperature compensation, which helps to minimize frequency fluctuations due to the changes in temperature or operating environment. It is also equipped with a 3-wire SPI interface for fast and easy programming.

SIT9005ACR1G-18ED can be applied in a wide range of products, including cellular phones, PDAs, GPS, digital cameras and portable medical equipment. It is also appropriate for embedded system applications where space is limited but multiple frequency outputs are needed. The oscillator can be used in baseband and low frequency clock generation, which makes it suitable for clock synchronization and frequency synthesis.

In conclusion, the SIT9005ACR1G-18ED is a hardware-programmable oscillator IC that is suitable for a wide range of products and applications. It is a reliable, low power solution that enables multiple frequencies from one oscillator. Its features include automatic frequency trimming, temperature compensation, and low jitter output frequency. The 3-wire SPI interface is easy to program and enables designers to quickly customize output frequencies for their applications. Thus, the SIT9005ACR1G-18ED is an ideal choice for low power, high performance, and reliable oscillator solutions.

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