Frequency Stability:	±20ppm, ±25ppm, ±50ppm
Height:	0.030" (0.76mm)
Size / Dimension:	0.098" L x 0.079" W (2.50mm x 2.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	6.5mA
Spread Spectrum Bandwidth:	-0.78%, Down Spread
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SIT9005
Voltage - Supply:	3V
Output:	LVCMOS
Function:	--
Available Frequency Range:	1MHz ~ 141MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	SSXO
Base Resonator:	MEMS
Part Status:	Active

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Programmable Oscillators

Programmable oscillators offer a versatile upgrading of conventional, fixed-frequency oscillators. With the invention of semiconductor components, it has become easier to build oscillators that can generate a variety of signals with different frequencies. The growing demand for different frequency outputs and the need to minimize complexity within a system has driven development in this field. In this article, we will explore the application field and working principle of the SIT9005ACU1G-30DC programmable oscillator.

Application Field

SIT9005ACU1G-30DC programmable oscillators are used in a wide variety of applications, including wireless networking, automotive electronics, computer peripherals, medical device systems and more. Thanks to their versatile nature, these devices offer control and flexibility to suit the myriad of application needs. Their low power consumption makes them highly suitable for high-performance yet energy-efficient system designs.The SIT9005ACU1G-30DC is designed to provide a clean and stable signal output frequency range from 5MHz to 300MHz. It has excellent phase noise performance and a wide operating temperature range. It offers excellent monotonicity and clock jitter suppression, which are crucial for medium- and high-volume applications. With its industry-leading space-saving size, it provides space savings to users, making it suitable for compact applications.

Working Principle

The SIT9005ACU1G-30DC programmable oscillator utilizes a Charge-Pump Phase Constrained Architecture (CPPCA), which is an advanced integrated circuit (IC) design technique in oscillator technology. With the integration of CPPCA and various other features on a single chip, the SIT9005ACU1G-30DC works by providing excellent phase noise and clean signal output frequency range.The CPPCA helps the device to seasonally compensate its output signal with less phase noise as compared to conventional techniques. The oscillator produces a signal with two intensity levels (high and low), rapidly switching back and forth at the pre-determined frequency; this behavior is known as an ongoing cycle. The time between successive cycles is referred to as the period. The signal produced by an oscillator is chosen so that it is periodical and stable, or in other words, it has the same frequency over time. With the ability to accurately control the frequency and output of the signal, the SIT9005ACU provide users a wider range of control and flexibility.To control the frequency, a synthesizer is used, which enables the user to select an arbitrary frequency within the range specified for the device. The synthesizer operates by using a number of phase frequency detectors (PFDs) and voltage controlled oscillators (VCOs). A PFD is used to compare the frequency of the signal coming from the VCO with a given reference frequency. This reference frequency is generated by the PFD and is referred to as a “tuning” signal. When the tuning signal is different from the frequency of the VCO, the PFD sends a signal to the voltage regulator of a VCO, increasing or decreasing its output frequency until the desired frequency is obtained.

Conclusion

SIT9005ACU1G-30DC programmable oscillators offer a versatile solution for various application needs. Its CPPCA architecture helps the device to seasonally compensate its output signal with less phase noise as compared to conventional techniques. Its flexibility and low power consumption make it suitable for high-performance yet energy-efficient applications. Its industry-leading space-saving size makes it suitable for the ever-increasing demand for compact applications in various fields.

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