DSC1103DE1-148.5000T

Frequency Stability:	±50ppm
Current - Supply (Disable) (Max):	95µA
Height - Seated (Max):	0.035" (0.90mm)
Size / Dimension:	0.098" L x 0.079" W (2.50mm x 2.00mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	AEC-Q100
Current - Supply (Max):	32mA
Operating Temperature:	-20°C ~ 70°C
Series:	DSC1103
Voltage - Supply:	2.25 V ~ 3.6 V
Output:	LVDS
Function:	Standby (Power Down)
Frequency:	148.5MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are systems that generate a continuous sequence of waveforms, often in sinusoidal (sine) form. They are used in many applications in electronics, communications, and electrical engineering. The specific oscillator under consideration here is the DSC1103DE1-148.5000T programmable oscillator, which provides a continuous wave output up to a frequency of 149.9 MHz, over a wide temperature range with tight stability specifications.

Application Field of DSC1103DE1-148.5000T

The DSC1103DE1-148.5000T oscillator is designed for radio frequency (RF) applications in many fields. Primarily, it is intended for use in consumer electronic equipment that requires a reliable and precise signal. Examples of this include some home electronics, such as televisions, radios, and sound systems. It can also be used in more specialized applications, such as in communications, radio astronomy, and even military equipment. The oscillator\'s stability makes it suitable for use in fields where precise timing and accuracy are required. These include systems that use global positioning satellites (GPS); cellular phones and other wireless communication systems; and automation and control systems, such as automatic piloting, measurement and control of industrial processes, and robotics.

Working Principle of DSC1103DE1-148.5000T

The DSC1103DE1-148.5000T oscillator is based on the oscillation of an LC circuit. It consists of an inductor (L) in series with a capacitor (C). A small amount of current flows through the circuit, creating an oscillating current that fluctuates in magnitude between an upper and lower limits based on the inductance and capacitance of the components. As the current alternates between the two limits, the magnitude of the voltage across the LC circuit will also vary continuously, creating an oscillating signal. The frequency of oscillation is determined by the time constant, τ, of the LC circuit. The oscillator is designed to allow manual adjustment of the voltage across the LC circuit, and thereby to control the frequency of the output signal. This is achieved by providing an adjustable voltage source to a varactor diode connected across the LC circuit, so that the junction capacitance of the diode can be varied. The oscillator also incorporates a feedback loop, consisting of an amplifier connected to the output of the LC circuit. This allows for the oscillator to be tuned very precisely, and to maintain consistent, accurate output-signal frequencies over a wide range of voltage and temperature changes.

Conclusion

The DSC1103DE1-148.5000T oscillator is a highly accurate and reliable programmable device that is suitable for a wide range of applications in different fields, including consumer electronics, communications, and industrial control systems. It operates on the principle of an LC circuit, with voltage adjustment to provide precise control of the oscillation frequency and with a feedback loop to ensure consistent performance over a wide range of voltage and temperature changes.

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