SIT9005ACB2D-30DJ

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Introduction

Programmable oscillators are devices which generate, maintain or modulate a frequency within a specified range and according to a specific frequency selection criterion. A programmable oscillator utilizes a software-based programmable switch to control the switching frequency. Common types of programmable oscillators are SIT9005ACB2D-30DJ, although other variations exist. This type is a precision programmable oscillator integrated circuit with a maximum operating frequency of 17.7GHz. It is an integrated circuit with three independent frequency control outputs, programmable via an I2C serial interface.

Application Field of SIT9005ACB2D-30DJ Programmable Oscillator

SIT9005ACB2D-30DJ programmable oscillators are widely used in a variety of applications ranging from wireless communication, navigation and navigation testing, radar, TV broadcasting, and satellite communications. The oscillator also finds use in extensive applications in ultra-wideband communication equipment, broadband wireless systems, high frequency testing and measurement equipment, etc.

The device offers an excellent level of control, with on-chip programmable frequency control and independent output stage control. The on-chip oscillator features adjustable slew rate and PLL (phase locked loop) reference input, allowing high level of precision timing control.

Working Principle of SIT9005ACB2D-30DJ Programmable Oscillator

The SIT9005ACB2D-30DJ programmable oscillator is based upon a monolithic crystal oscillator. The crystal vibrates with a piezoelectric effect when fed a precision electrical signal. The electrical signal is generated by the built-in voltage-controlled oscillator, which is usually configured to be the oscillator reference frequency. The oscillator frequency is then determined by adjusting the frequency control voltage, which is compared to the crystal frequency.

The voltage-controlled oscillator is designed with an adjustable slew rate and a PLL reference input. It is connected to the D flip-flop, which is also connected to a register and three independent branches for setting the frequency. The freqeuency control output is then adjusted through serial inputs, allowing fine tuning and greater control of the oscillator.

The SIT9005ACB2D-30DJ is operated via the I2C interface. The host microcontroller sends commands to the integrated circuit and controls the frequency control output. The programmable oscillator also features on-board power management circuitry to maintain a low power consumption and notch filter to reduce any harmonics.

Conclusion

The SIT9005ACB2D-30DJ programmable oscillator is a versatile and precise device, finding use in applications ranging from wireless communication to test and measurement equipment. Its monolithic design gives it greater stability and improved performance, allowing a higher level of precision control over the oscillator frequency. The oscillator’s higher operating frequency makes it more suitable for applications involving ultra-wideband and broadband wireless systems.

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