SIT9002AI-23H33DT

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Programmable oscillators are electronic circuits designed to generate specific output frequencies. The SIT9002AI-23H33DT is one such oscillator, capable of 12-bit frequency resolutions up to 8GHz, and 7.2 to 8GHz tuning range. It is a versatile oscillator, ideal for a wide range of applications that require precise frequency synthesis.

The SIT9002AI-23H33DT package includes an integrated programmable voltage-controlled oscillator, reference oscillator, and PLL core. Using the on-board SPI control, the oscillator can be programmed to different predefined configurations. The tuning resolution of the oscillator varies from 0.0003 to 0.0051 GHz, depending on the frequency range.

The device utilizes a self-calibrating technique to automatically program the oscillator’s parameters for superior frequency stability. The wide frequency range of the SIT9002AI-23H33DT makes it suitable for use in radio communication, frequency synthesis, digital signal processing, and timing applications.

The major features of the SIT9002AI-23H33DT include a fast settling time, low jitter, and high frequency accuracy. The oscillator also offers multiple output options including buffered LVDS, HCSL, and LVPECL. The operating temperature range of the device is -40 to +85°C and is available in a 10-pin miniature surface mount package.

In terms of operation, the programmable oscillator works by taking a low-frequency reference signal and multiplying it up to the desired output frequency. A voltage-controlled oscillator (VCO) is used to perform this multiplication. The oscillator is able to maintain a constant frequency as the VCO frequency is adjusted with a control voltage.

The SIT9002AI-23H33DT oscillator utilizes a frequency lock loop (FLL) to minimize the frequency variation caused by temperature and supply voltage fluctuations. A reference oscillator and PLL core are used within the device to measure and control the VCO frequency. The PLL core consists of a digital signal processor (DSP) and an integrated voltage-to-frequency converter (VFC). The DSP uses an internal clock to measure the input signal and compare it to the reference frequency to determine the necessary control voltage to apply to the VCO.

The oscillator also includes a power-saving sleep mode, enabling it to operate in both normal and low-power operation. In low-power mode, the oscillator consumes only 0.74mW while in normal mode, the input voltage range is between 1.7 to 4.6 V.

The SIT9002AI-23H33DT oscillator is a reliable and cost-effective solution for applications that require frequency synthesis and precise frequency control. With its wide range of features, it is an ideal choice for a wide range of applications such as radio communication, frequency synthesis, digital signal processing, and timing systems.

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