XLH730011.059000X

Frequency Stability:	±100ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.055" (1.40mm)
Size / Dimension:	0.295" L x 0.205" W (7.50mm x 5.20mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	32mA
Operating Temperature:	-20°C ~ 70°C
Series:	XPRESSO™ FXO-HC73
Voltage - Supply:	3.3V
Output:	HCMOS
Function:	Enable/Disable
Frequency:	11.059MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Strip

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XLH730011.059000X Oscillators Application Field and Working Principle

Oscillator is an device which produces a periodic waveform without external energy input. The repetition rate of the waveform is called oscillation frequency. XLH730011.059000X Oscillator belongs to this category. The application field and working principle of this oscillator are outlined below.

Application Field of XLH730011.059000X Oscillator

XLH730011.059000X Oscillators are widely used in communication, navigation, industrial control and scientific research system, as well as in the communication and navigation instruments used by the army. They are also used in military radar, frequency synthesizers, radio equipment, and shortwave radio transmitters and receivers. It is a high-precision oscillator and can exceed the performance of quartz oscillators in many cases.

Working Principle of XLH730011.059000X Oscillator

XLH730011.059000X Oscillator adopts the most advanced PLL (Phase Locked Loop) circuit and digital control synthesis technology. To explain its working principle, we will start with the basic form of a PLL circuit. The feedback structure of a PLL circuit is shown in the figure below.The figure is a basic PLL circuit, which is composed of four parts. The VCO (Voltage-Controlled Oscillator) is the core part, in which the phase error output by the phase detector is compared to the input signal and then processed according to the loop gain to generate the stable periodic output signal. The phase detector is the key component which drives the PLL to lock. Once the phase difference between the input signal and the oscillation output of the VCO is zero, the phase detector will stop outputting the phase error signal.The loop filter is a low-pass filter and its function is to remove the high frequency component in the phase error signal and ensure that the PLL has a stable operating state. Finally, the reference signal source is used to compare the two signals to obtain the correct frequency and phase.The PLL circuit of the XLH730011.059000X Oscillator uses a voltage-controlled oscillator whose working principle is similar to that of an analog oscillator. It contains a voltage controlled oscillator circuit and a feedback circuit. The voltage controlled oscillator uses a negative resistance element as an active device (such as a transistor or a field effect transistor), in order to provide the PLL oscillator with a wide tuning range. The feedback circuit consists of a waveform shaping circuit and a phase shifting circuit. The waveform shaping circuit will shape the output waveform of the PLL oscillator into a sinusoidal waveform, and the phase shifting circuit is used to obtain the phase delay in the voltage-controlled oscillator. When the oscillation frequency of the VCO is equal to the input signal frequency, the signals at the output of the VCO and at the input of the PLL circuit will be the same. At this time, the phase detector will stop outputting the phase error signal and the PLL will maintain a stable oscillation state. By adding an adjustable voltage or current to the control port of the PLL oscillator, its oscillation frequency can be precisely adjusted. This is the basic principle of the XLH730011.059000X Oscillator.

Conclusion

XLH730011.059000X Oscillators are widely used in many different applications due to their high precision. It adopts advanced PLL (Phase Locked Loop) circuit and digital control synthesis technology. With the working principle of the PLL circuit and voltage-controlled oscillator described above, the working principle of the XLH730011.059000X Oscillator can be known.

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