SIT3809AC-C-18NX

Frequency Stability:	±10ppm
Height:	0.031" (0.79mm)
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):	33mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SiT3809
Voltage - Supply:	1.8V
Output:	LVCMOS, LVTTL
Function:	--
Available Frequency Range:	80MHz ~ 220MHz
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

Programmable oscillators are a type of digitally-controlled, low-power oscillator which is able to generate a large range of different frequencies, usually within a 3.3-12.2MHz range. Programmable oscillators are useful in a range of applications, including frequency tuning and synchronization, timing, remote sensing and monitoring, among others. Utilizing digital technology, programmable oscillators are able to provide improved resolution, enhanced accuracy and allow for rapid frequency change.The SIT3809AC-C-18NX is a versatile programmable oscillator, utilized in a range of applications. This oscillator is able to offer an increased frequency of up to 16MHz, a power supply of 2.3V-3.3V, and an upgradeable frequency range of 3.3-12.2MHz. This provides an ideal power source for projects involving microcontrollers, or other application domains that require a precision oscillator.The SIT3809AC-C-18NX is designed with an 18-bit programmable frequency register. This register provides an equal amount of frequency resolution to the standard 6-bit resolution, while at the same time allowing for a wider frequency range. The SIT3809AC-C-18NX is also equipped with an adjustable phase detector for more precise frequency control.The working principle of the SIT3809AC-C-18NX involves the use of a phase-locked loop (PLL), which monitors the frequency of the oscillator and adjusts it to maintain stability. The PLL is able to detect any variation in the oscillator frequency and quickly adjust the output frequency to match the original settings. This is done by using the adjustable phase detector, which is an integral part of the PLL.The SIT3809AC-C-18NX’s PLL is also able to provide a wide range of output frequency settings. This is done by adjusting the settings of the adjustable phase detector. The settings are changeable by the user, which is useful in applications that require specific output frequency settings. An example of this is when a microcontroller needs to be synchronized with a particular signal, such as a signal coming from a radio transmitter. The user can easily adjust the frequency settings of the SIT3809AC-C-18NX in order to match the signal frequency closely, allowing for greater accuracy.The versatility of the SIT3809AC-C-18NX is further enhanced by its use of an SPI port, which allows for remote programmability. The SPI port allows for data transfer from and to the SIT3809AC-C-18NX, which makes it ideal for controlling the oscillator from a remote location.Furthermore, the SIT3809AC-C-18NX offers a wide range of operating modes. These operating modes are selectable through the SPI port and provide flexibility for the user when designing their application circuits. These operating modes include circuit-start up, PLL drift compensation, frequency hopping, frequency stabilization, and time base generation.In conclusion, the SIT3809AC-C-18NX is an ideal programmable oscillator for a range of applications. With its adjustable phase detector, programmable frequency register, wide range of frequency settings and wide range of operating modes, the SIT3809AC-C-18NX is an ideal choice for projects involving microcontrollers or any other application that requires a high level of precision oscillation.

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