SIT9005ACE1G-25DH

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:	-2.1%, Down 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: SIT9005ACE1G-25DH Application Field and Working Principle

Programmable oscillators are oscillating devices specifically designed to provide a wide range of frequency options, often with the capability of being programmed with varying degrees of accuracy in multiple output frequency ranges. They are typically packaged and sold as integrated circuits (ICs) and integrated modules. The SIT9005ACE1G-25DH is a prime example of a programmable oscillator, and this article will discuss the underlying technology and its applications.

Oscillator Design

The typical oscillator design comprises three components: an amplifier, a feedback network, and an oscillator or resonator. The amplifier has the function of amplifying a signal, while the feedback network controls the oscillator’s output frequency. The oscillator or resonator produces the desired frequency output. The SIT9005ACE1G-25DH oscillator is based on the design of a voltage-controlled oscillator (VCO) utilizing a differential linearizing loop and a compensation network, produced on a 0.250” x 0.250” hermetic SMT package. It operates in the range of 100kHz to 5.0GHz and typically provides a frequency regulation of ±50 ppm over the operating range.

Operation

The SIT9005ACE1G-25DH oscillator uses a linearizing loop and a compensation network to regulate the frequency output. The linearizing loop consists of a differential amplifier connected with a double-balanced mixer and a voltage-controlled oscillator (VCO). An output from the mixer is fed back to the input port of the amplifier to create a feedback loop which adjusts the frequency of the output waveform to the desired operating frequency. The compensation network provides stability for the oscillator over a wide frequency range.

Applications

The SIT9005ACE1G-25DH is typically used as an oscillator in cellular and wireless systems, as well as in radar and instrumentation applications. Its features include low power consumption, high accuracy, and low noise levels, making it well-suited for these applications. Furthermore, the high frequency range of the oscillator makes it a viable option in instrumentation, radar, communications and navigation systems.

Conclusion

Programmable oscillators such as the SIT9005ACE1G-25DH provide the user with the ability to program its output frequency for a wide variety of applications. Its design consists of an amplifier, feedback network and oscillator/resonator. It operates using a linearizing loop and a compensation network to adjust the output frequency to the desired operating frequency. The SIT9005ACE1G-25DH is typically used in cellular, wireless, radar and instrumentation applications due to its low power consumption, high accuracy and low noise levels.

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