SIT9121AC-1D-XXE

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Programmable oscillators are designed to generate timing signals which enable a wide range of applications in the embedded electronics industry. The SIT9121AC-1D-XXE application field and working principle is one such example of a programmable oscillator. The product is designed for a low-power CMOS digital environment, and it offers a variety of features that make it an ideal choice for embedded electronics designers.

Features

The SIT9121AC-1D-XXE programmable oscillator features a wide operating voltage range of 1.5V to 3.3V. It also offers integrated EMI/RFI reduction and low-power consumption, with typical power consumption as low as 65uA at a 1.5MHz frequency. The device has an exceptional jitter performance that provides very low jitter spectral content with a wide frequency range of 1.5kHz to 3.2MHz.

The SIT9121AC-1D-XXE is designed for simple frequency-selection through a single a programming pin and requires no external capacitors or other components. The device is capable of producing clean waveforms with minimal frequency variance over temperature and process variation, making it a reliable choice for designers. Furthermore, the device has an instantaneous PLL lock that allows for quick frequency changes and is immune to EMI/RFI noise.

Applications

The SIT9121AC-1D-XXE is designed for a wide range of applications. It is particularly popular for embedded microcomputer applications such as data measurement and control, clock synchronization and time-base, and low-power accuracy. The device is also suitable for automotive, battery operated portable radio and television, and LED lighting system applications. It is ideal for mixed-signal audio systems as it offers EMI/RFI noise immunity and low power consumption.

Working Principle

The SIT9121AC-1D-XXE uses a variety of techniques to provide a programmable frequency output. The oscillator is based on a high performance, low power CMOS digital circuit, which allows for the integration of voltage-controlled oscillators, frequency dividers and other components. An on-board voltage regulator ensures that the device functions correctly with varying voltages.

The SIT9121AC-1D-XXE also utilizes a frequency-generation algorithm which enables the accurate programming of the output frequency. A frequency divider network is used to divide down the input frequency to a desired output, and a digital phase-locked loop (DPLL) is used to ensure accuracy. The phase-locked loop allows for a large frequency range and high accuracy over temperature changes, process variation and other factors.

Conclusion

The SIT9121AC-1D-XXE programmable oscillator is a versatile, low-power solution for embedded electronics applications. It features a wide operating voltage range, low-power consumption, EMI/RFI noise immunity and a variety of frequency ranges with very low jitter spectral content. The device also employs a frequency-generation algorithm and DPLL to ensure accuracy. The SIT9121AC-1D-XXE is suitable for automotive, battery-powered portable devices, LED lighting systems and other applications.

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