SIT3809AC-C-28NY

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):	36mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-20°C ~ 70°C
Frequency Stability (Total):	--
Series:	SiT3809
Voltage - Supply:	2.8V
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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Introduction

Programmable Oscillators are oscillator circuits whose parameters can be varied for various application without the need for any additional components. They are very versatile in nature and have been used in a variety of applications including electronic benchmarks, clock synchronization, counter-timing, audio-frequency synthesizers, etc. The SIT3809AC-C-28NY is a programmable oscillator which has many features incorporated into it, making it ideal for a range of applications.

Applications

The SIT3809AC-C-28NY has been designed to provide a wide range of applications. Its features include a low power consumption of 0.05uA, excellent frequency stability and accuracy of 1ppm per °C, high frequency range of 3 to 1.2GHz and temperature range of 5 to 85°C. This allows the SIT3809AC-C-28NY to be used in a variety of tasks. For instance, the SIT3809AC-C-28NY can be used as a clock generator for digital systems and products, because of its excellent frequency stability and wide temperature range. Its low power dissipation makes it ideal for portable devices, for it can run for long periods without requiring battery replacements. Its high frequency range and accuracy also makes it ideal for use in broadcast video and radio applications, where accuracy and timing is of paramount importance.Furthermore, the SIT3809AC-C-28NY can be used in the field of audio-frequency synthesis, as the oscillation signal can be programmed to generate waveforms of specific frequencies. It can also be used in automated equipment such as sequencing systems and automotive electronics, because of its reliable timing and accuracy.

Working Principle

The SIT3809AC-C-28NY utilizes a charge-pump-controlled oscillator, or CPXO, in which the frequency of the oscillator is determined by the capacitance of the charge pump. By varying the capacitance of the charge pump, the oscillator can be programmed to generate different frequencies over a wide range.The frequency of the oscillator is determined by the following equation: F = (1/2µS) * C, where F is the frequency, µS is the charge pump\'s capacitance and C is the voltage of the given node. By varying the voltage, the frequency of the oscillator can be changed accordingly.The SIT3809AC-C-28NY also incorporates a ‘Ramping\' feature, which allows for the frequency of the oscillator to be programmed to varying amounts, such that the frequency can be increased or decreased gradually and precisely. This makes it easier to accurately set a desired frequency.Furthermore, the SIT3809AC-C-28NY also features an adjustable ‘Level Shift\' feature, allowing the output frequency to be adjusted across a variety of ranges. This means that the output frequency can be adjusted to account for different surfaces and types of material.

Conclusion

The SIT3809AC-C-28NY is an ideal programmable oscillator for a variety of applications. Its low power consumption, high frequency range and accuracy make it especially suitable for applications where reliability and accuracy are key. Furthermore, its incorporated ‘Ramping\' and ‘Level Shift\' features make it even better suited for applications where precise timing and frequency adjustments are necessary.

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