SIT9005ACL1H-25DA

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:	±0.125%, Center Spread
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SIT9005
Voltage - Supply:	2.5V
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: SIT9005ACL1H-25DA application field and working principle

Oscillators are electronic circuits that output repeating signal waveforms, usually with a fixed or adjustable frequency and phase. Programmable, or digitally controlled oscillators (DCOs), are special oscillators whose frequency, phase, and amplitude can be adjusted precisely, allowing engineers to design many complex and intricate signal waveforms. In some applications, the ability to program an oscillator is essential. This article examines the specific application field, structure and working principle of SIT9005ACL1H-25DA, one of the most popular programmable oscillators.

Application Field of SIT9005ACL1H-25DA

The SIT9005ACL1H-25DA programmable oscillator is a crystal oscillator that is designed for use in a range of industrial and automotive applications, such as air traffic control systems and BMS. Its use in these settings allows for the precise control and adjustment of signal waveforms for improved accuracy, precision, and performance.It is also well-suited for applications involving sensor technology, such as video surveillance, autofocus and image stabilization systems, and navigation and tracking systems. Its adjustable signal waveform makes it perfect for precisely controlling the output of complex signal data, as is often required in sensor applications.

Structure and Working Principle of SIT9005ACL1H-25DA

The SIT9005ACL1H-25DA is composed of a digitally-controlled oscillator (DCO) and an internal pulse modulator. The DCO is composed of a Start/Stop Circuit, XTAL Oscillator, Bridge Reconstruction Key and other vital components, while the internal pulse modulator is composed of a Tone Detector, Voltage Controlled Oscillator, Divider, and Digital Modulator.When the oscillator is powered through the VDD pad, a Start Signal is generated and the XTAL Oscillator that is connected to the Crystal Resonator begins to oscillate. The oscillation data is then transferred to the Bridge Reconstruction Key, where it is amplified and translated into an analog pulse-modulation signal. This signal is then inputted into the Tone Detector and then the Voltage Controlled Oscillator (VCO). The VCO amplifies the signal and then outputs it to the Divider where it is further amplified and divided into several output signals. These output signals are then modulated and adjusted by the Digital Modulator, resulting in an accurate and adjustable output frequency, amplitude, and phase that is suitable for many applications.

Conclusion

The SIT9005ACL1H-25DA is a programmable oscillator that finds its application in a wide range of industrial, automotive and sensor applications. Its internal components enable it to precisely control and adjust signal waveforms, allowing engineers to design complex and intricate signal data for improved accuracy, precision and performance. Understanding its structure and working principle is essential for making the best use of this programmable oscillator.

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