SIT9005ACL2H-18DO

Frequency Stability:	±20ppm, ±25ppm, ±50ppm
Height:	0.030" (0.76mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	5.5mA
Spread Spectrum Bandwidth:	±1.935%, Center Spread
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SIT9005
Voltage - Supply:	1.8V
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

The SIT9005ACL2H-18DO is a programmable oscillator, designed to provide precise oscillatory signals at various frequencies and voltage levels. It is an integrated circuit device, consisting of a stable clock crystal, voltage controlled oscillator, amplifier and frequency divider stages. The integrated circuit is designed in such a way that it can be programmed to output the required frequency and voltage output.Programmable oscillators have a wide range of applications including timekeeping, frequency control, synchronization, data transmission and signal conversion. Programmable oscillators are used in various communication and computing devices such as digital cameras, modems, mobile phones, GPS receivers and audio systems. They are also employed in medical applications as well as in radio transmitting and receiver stations.In order to understand how programmable oscillators work, it is important to understand the different components that comprise the integrated circuit. The first component is the stable clock crystal. This is an oscillating quartz device which is usually used to generate precision timekeeping signals. These signals are then used to drive the rest of the components within the integrated circuit.The second component is the voltage controlled oscillator (VCO). This is a type of oscillator that generates an oscillatory signal which can be varied over a range of frequencies by changing the supply voltage. This is often used to produce a wide range of frequencies from low frequencies up to relatively high frequencies.The third component is the amplifier section which amplifies the output signals from the stable clock crystal and the VCO. This is necessary in order for the output signals to be accurately transmitted.The fourth component is the frequency divider stage. This divides the input signals from the amplifier stage into four different outputs, with each output having a different frequency. This is used to create multiple output signals from the same input signal and thus provide precise frequency outputs.Finally, the integrated circuit is programmed to select the desired output frequency and the necessary voltage output in order to provide precise oscillations at the required frequency. This is done via a variety of programming techniques such as programming fuses and logical gates.By combining the stable clock crystal, VCO and frequency divider stages with powerful programming techniques, programmable oscillators are able to provide precise oscillatory signals of various frequencies and voltage levels. This remarkable device has a wide range of applications, and thus has become an important tool in modern day electronics.

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