SIT9120AC-1CF-33S161.132800T

Frequency Stability:	±10ppm
Current - Supply (Disable) (Max):	35mA
Height - Seated (Max):	0.032" (0.80mm)
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	69mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	--
Series:	SiT9120
Voltage - Supply:	3.3V
Output:	LVPECL
Function:	Standby (Power Down)
Frequency:	161.1328MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to Oscillators

An oscillator is an electronic circuit used to generate a continuous or intermittent electrical signal. These signals are then used to drive power transistor circuitry or to drive DC motor drives. Oscillators are often employed in electronic devices such as computers, radios, televisions, cell phones, and much more.The primary components of an oscillator consist of an amplifier, phase-shifter, and wave-shaping network. The amplifier provides gain to the oscillator circuit which can be used to increase or decrease the amplitude of the output signal generated. The amplifier also allows for more complex wave-shaping networks to be employed to create more complex output signals. The phase-shifter is used to invert the output signal in order to produce a waveform that will oscillate. Finally, the wave-shaping network is then used to control the type of output waveform produced.

SIT9120AC-1CF-33S161.132800T Application Field and Working Principle

The SIT9120AC-1CF-33S161.132800T oscillator is a programmable frequency oscillator that produces a square waveform. It is designed for use in power switching applications.The SIT9120AC-1CF-33S161.132800T oscillator consists of two main components: a voltage control oscillator (VCO) and a counter. The VCO is used to generate the signal that will be output by the oscillator. The oscillator\'s output frequency is determined by the value of the VCO control voltage. The VCO is constructed with a P-type mosfet that acts as an adjustable voltage divider.The counter is used to divide the frequency of the VCO output signal to a programmed value. When the count of the counter is reached, its output goes low which causes the P-type mosfet to open and the output signal frequency to change. The count of the counter is determined by an external digital signal applied to the counter\'s input. By changing the external digital signal, the count of the counter and thus, the oscillator\'s output frequency can be programmed.The advantage of using a programmable oscillator is that once programmed, it is fixed and no further adjustments are needed. This makes it ideal for applications where precise, repeatable, and stable oscillator signals are needed. It is also useful in applications where rapid changes in frequency are required.

Conclusion

The SIT9120AC-1CF-33S161.132800T oscillator is an important component in power switching applications. The oscillator is constructed with a VCO and counter which work together to generate a square waveform with adjustable frequency. The VCO is used to generate the output signal, while the counter divides the frequency of the signal to a programmed value. The oscillator is programmable, which means that once programmed, it does not need further adjustment. This makes it ideal for applications where precise, repeatable, and stable oscillator signals are needed.

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