SIT9005ACA2G-28DG

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Programmable Oscillators are used for a variety of applications, including frequency- and time-critical systems. The SIT9005ACA2G-28DG is a popular model among various types of Programmable Oscillators, due to its ability to deliver highly precise clock signals and flexible features that can be easily adjusted. This article will discuss the application fields and working principles of the SIT9005ACA2G-28DG.

Application Fields

The application field of the SIT9005ACA2G-28DG is vast and covers a wide range of industries and applications. The device is used in automotive audio systems, telecommunications systems, phase-lock loop circuits, phase-shift keying systems, microcontroller and microprocessor standard clocks, frequency counters, and precision time-delay circuits. The compact size and wide temperature ranges make it ideal for use in embedded systems and applications, such as high-speed clock and data recovery systems, as well as wide temperature range process control circuits.

Working Principles

The SIT9005ACA2G-28DG is an oscillator generator IC with an on-chip programmable oscillator. It includes a voltage-controlled oscillator (VCO) with a frequency range of 25-100 MHz, a frequency divider for precise control of the output frequency, and a temperature-compensated reference oscillator (TCR). The output signal can be adjusted in frequency and phase with different settings, and can be programmed to permit precise delay settings. The device also features programmable skew, jitter, and delay features that can be adjusted via an I2C or SPI bus.

The clock output is driven by the VCO, which can be controlled by a simple 2-pin or 8-pin connection. The frequency divider allows the output frequency to be adjusted through a range of 25 MHz to 100 MHz. The divider can also be used to generate sub-harmonics and spurious signals. The VCO is temperature compensated to minimize output jitter and frequency drift.

The TCR delivers an accurate reference signal to the VCO, which is buffered to provide a more precise input analog signal to the VCO. The reference frequency can be set to 1-10 MHz and also features selectable feedback resistance. The feedback resistance can be used to modify the output frequency at different stages of the program.

The SIT9005ACA2G-28DG utilizes a 3.3V plus/minus 5% power supply. It includes internal over-voltage protection and has a wide operating temperature range of -40 C to +825 C for high-temperature applications. It is available in multiple form factors, such as 4mm x 4mm QFN, SOT 5X5 and SOIC. The device comes with an integrated ESD protection structure that ensures reliable operation.

Conclusion

The SIT9005ACA2G-28DG is a versatile and reliable programmable oscillator. The device is capable of providing efficient, accurate clock signals for a variety of applications. It is widely used due to its excellent frequency and phase control, its wide temperature range, and its flexible programming options. The device is widely adopted in a variety of applications in industries such as automotive, telecommunications, and even aerospace.

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