SIT3822AC-1D-25NZ

Frequency Stability:	±10ppm
Height:	0.039" (1.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	69mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SiT3822
Voltage - Supply:	2.5V
Output:	LVPECL
Function:	--
Available Frequency Range:	220MHz ~ 625MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	VCXO
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Bulk

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Programmable Oscillators play an important role in today’s electronics world, from controlling the frequency in oscillators to providing accuracy and stability in time-critical applications. SIT3822AC-1D-25NZ is one of the most popular models of programmable oscillators and has numerous applications in various industries. In this article, we will explore the application field and working principle of SIT3823AC-1D-25NZ and discuss how it functions in various scenarios.SIT3822AC-1D-25NZ is a low-frequency programmable oscillator used for timing and synchronization applications. It is a voltage-controlled oscillator that uses a CMOS process and is available in a variety of frequency bands. This model is very popular in a wide range of consumer and industrial applications, including remote keyless entry systems, digital cameras, medical devices, and industrial test equipment.The main feature of the SIT3822AC-1D-25NZ is its ability to generate precise and stable frequencies using low power. The device has two control pins, allowing it to generate precise frequencies that are either fixed or variable. The frequency can be adjusted from 15Hz to 25kHz with a resolution of 0.001Hz, making it perfect for applications that require precise control over frequency.The frequency tuning range of this oscillator is also very wide, making it suitable for different applications. It can be used for clock generation in microprocessors and FPGAs, or for precise time-critical applications such as those in financial, telecommunications, and industrial control. The frequency resolution of the SIT3822AC-1D-25NZ also makes it well suited for frequency-hopping applications, such as RF and wireless communication networks.The working principle of the SIT3822AC-1D-25NZ is based on two main components: the Voltage-Controlled Oscillator (VCO) and the Frequency-Locked Loop (FLL). The VCO is the basic oscillator circuit, which uses an external voltage to control the output frequency of the oscillator. The Voltage-Controlled Oscillator and the Frequency-Locked Loop are then integrated together with a couple of control pins to create the SIT3822AC-1D-25NZ oscillator.The functioning principle of the SIT3822AC-1D-25NZ can be broken down into three components. The first component is the voltage-controlled oscillator, which consists of two transistors, a resistor, and a capacitor. The voltage is applied to the emitter of one transistor, causing a current to be drawn and thus an alternating voltage to be generated. This alternating voltage is then divided by the resistance, producing an AC waveform.The second component of the SIT3822AC-1D-25NZ oscillator is the Frequency-Locked Loop (FLL). The FLL allows the user to specify a set frequency and is then responsible for keeping the voltage-controlled oscillator (VCO) output at that frequency. The FLL works by the use of a VCO, a phase-locked loop (PLL) circuit, and a frequency-locked loop controller. The PLL circuit is responsible for generating a reference signal, which is then compared to the VCO output by the frequency-locked loop controller. Any difference between the two is corrected by changing the voltage applied to the VCO, thus keeping the output frequency locked to the target.The third component of the SIT3822AC-1D-25NZ oscillator is the control pin, which is used to adjust the output frequency. It is connected to a voltage divider network, which is controlled by a potentiometer. The potentiometer is used to adjust the frequency range of the output. This allows the user to dial-in a range of frequencies suitable for their needs.In conclusion, the SIT3822AC-1D-25NZ is a reliable and precise low-frequency programmable oscillator used in numerous applications. It has a wide frequency range, adjustable frequency resolution, and very low power consumption, making it highly attractive for use in a wide range of consumer and industrial applications. Its working principle is based on the combined functioning of the Voltage-Controlled Oscillator, Frequency-Locked Loop, and Control Pin. All together, it ensures reliable, precise, and stable frequency outputs with very low power consumption.

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