SIT8208AI-3-28S

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	70µA
Height:	0.031" (0.79mm)
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	33mA
Spread Spectrum Bandwidth:	--
Operating Temperature:	-40°C ~ 85°C
Frequency Stability (Total):	--
Series:	SiT8208
Voltage - Supply:	2.8V
Output:	LVCMOS, LVTTL
Function:	Standby
Available Frequency Range:	1MHz ~ 80MHz
Programmable Type:	Programmed by Digi-Key (Enter your frequency in Web Order Notes)
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Bulk

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Introduction

Programmable oscillators are type of oscillators that can be programmed to adjust their frequency, duty cycle, and other parameters based on the application requirements. The SIT8208AI-3-28S is a low voltage, programmable oscillator designed to provide fast settling times and low power consumption while allowing flexibility both in frequency control and other features like phase shifting, branch usage, and reset functions.

Features and Benefits

The main features of the SIT8208AI-3-28S include the following:

• It is a low-voltage, programmable oscillator that supports a wide range of frequencies. The frequency range is between 5KHz to 1.8GHz.
• It has a wide temperature range from -20°C to 85°C.
• It provides fast settle time, meaning the time required for stabilization and accurate data transfer.
• It has low power consumption.
• It is compatible with different other programmable and non-programmable external components, such as voltage regulators and filters.
• It supports programmable amplitude, frequency, duty cycle, and other parameters.
• It has a built-in reset circuit and a branch usage feature.
• It allows phase shifting and other features.

These features make the SIT8208AI-3-28S ideal for use in a variety of applications, such as:

• Frequency control in automotive, industrial, and consumer products
• Low voltage data communication and control
• FM radio transmission and reception
• Personal computers and accessories
• Energy management systems
• RF and microwave applications

Working Principle

The SIT8208AI-3-28S oscillator uses a temperature-compensated crystal oscillator (TCXO) circuit. This circuit consists of a crystal and two external components, a capacitor and a resistor. The resistor and capacitor are used to control the output frequency of the oscillator and to provide feedback to keep the frequency at the desired setting. When the power is turned on, the oscillator starts up and begins to oscillate at the desired frequency. The presence of the resistor and capacitor, known as a tank circuit, provide a feedback loop and allow the frequency to be adjusted. The frequency can then be changed by adjusting the value of the resistor or capacitor, or both, in order to achieve the desired frequency.The SIT8208AI-3-28S oscillator also has the ability to be programmed. This is done by connecting the circuit to a PC via a USB port and then using a software program to set the desired output frequency, duty cycle, phase shift, and other parameters.

Conclusion

The SIT8208AI-3-28S is a low-voltage, programmable oscillator designed primarily for use in low voltage data communication and control applications, as well as a wide range of other applications. It provides fast settle times and low power consumption while allowing flexibility both in frequency control and other features like phase shifting, branch usage, and reset functions. Its features make it well suited for a variety of applications, particularly automotive, industrial and consumer products. Additionally, it is easy to program using a software program connected to a PC via a USB port.

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