530EB266M000DGR

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	75mA
Height - Seated (Max):	0.071" (1.80mm)
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):	121mA
Operating Temperature:	-40°C ~ 85°C
Absolute Pull Range (APR):	--
Series:	Si530
Voltage - Supply:	2.5V
Output:	LVPECL
Function:	Enable/Disable
Frequency:	266MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are electronic devices used to generate repetitive signals, which have a large variety of applications. Oscillators can be used in areas such as communication systems, calculating machines and embedded controllers. One of the most popular oscillators is the 530EB266M000DGR (referred to as the DGR oscillator). In this article, we will be looking at the application field and working principle behind the DGR oscillator.

Application Field and Working Principle

The DGR oscillator is a sine wave, crystal-element oscillator specifically designed for low power supply applications. It has an operating frequency of 50kHz and a temperature stability of 5ppm/°C (parts per million / degree Celsius). It is commonly used in telecommunication systems, medical instruments, consumer electronics and other industrial applications. The DGR oscillator uses a crystal element as a frequency control element. In a crystal element oscillator circuit, a transistors collector current flows to the base of a second transistor, while the first transistor is used to control the base bias of the second transistor. This process creates an oscillating circuit which generates an output sine wave. The frequency of the oscillation is dependent on the capacitances and resistances of the circuit, as well as the parasitic capacitors. The combination of the crystal element and parasitic capacitors induce the majority of the total capacitance, which controls the operating frequency. The output voltage from the oscillator is proportional to the current through the collector. The bias current is controlled by varying the voltage across the crystal element, which is done through the use of a circuit board trace near the crystal element. This trace allows the impedance of the circuit to be varied, thus varying the output voltage.

Conclusion

The DGR oscillator is a popular choice for low power applications due its operating frequency of 50kHz, temperature stability of 5ppm/°C and its use of a crystal element as the frequency control element. The combination of the crystal element and parasitic capacitors induce the majority of the total capacitance which allows the operating frequency to be varied. The output voltage from the oscillator is controlled by varying the voltage across the crystal element. Overall, the DGR oscillator is a highly efficient and reliable choice for use in a wide range of applications.

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