PL123-05SC

Ratio - Input:Output:	1:5
Base Part Number:	PL123
Supplier Device Package:	8-SOP
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	3 V ~ 3.6 V
Divider/Multiplier:	No/No
Frequency - Max:	134MHz
Differential - Input:Output:	No/No
Series:	--
Number of Circuits:	1
Output:	Clock
Input:	Clock
PLL:	Yes with Bypass
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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Clock Generators, PLLs, Frequency Synthesizers

The PL123-05SC is a type of clock generator, phase-locked loop, or frequency synthesizer (all three are collectively referred to as PLLs) that is used in a variety of applications. This guide will look at the application field and working principle of the PL123-05SC.

What are Clock Generators, PLLs, and Frequency Synthesizers?

A clock generator, PLL, or frequency synthesizer is a device that converts an input signal into an output signal of a higher frequency. Different from conventional oscillators, which tend to produce an output signal at a specific frequency, PLLs allow the output frequency to be adjusted, depending on the configuration of the system and the needs of the user.

Application of the PL123-05SC

The PL123-05SC is used to provide high frequency, low noise signal with low jitter, making it suitable for multi-GHz requirements. It is used in various applications such as:

• Telecommunications systems
• Wireless frequency synthesizers
• Clock Multiplexers
• Satellite Navigation Systems
• Digital Broadcast Systems
• Data Storage Devices
• High-Performance Computing
• High-Speed Serial Interface

Working Principle of the PL123-05SC

The working principle of the PL123-05SC is based on the concept of a Phase-Locked Loop (PLL), which is a type of feedback system used for frequency control. The PLL is composed of four main components: an oscillator, a phase comparator, a low-pass filter, and a voltage-controlled oscillator (VCO).

• The oscillator generates a reference signal, usually with a frequency of 10 MHz in the PL123-05SC.
• The phase comparator compares the phase difference between the reference signal and the feedback signal, which is taken from the circuit output. If the phases are different, the output of the phase comparator will be a signal that will adjust the frequency of the output.
• The low-pass filter is used to filter out the high-frequency noise produced in the phase comparator.
• The voltage-controlled oscillator (VCO) is the component that adjusts the output frequency based on the signal from the phase comparator. The output frequency from the VCO is the desired frequency, which is adjustable depending on the configuration of the system.

Conclusion

The PL123-05SC is a type of clock generator, phase-locked loop, or frequency synthesizer that is used in a variety of applications. It is designed to provide high frequency, low noise signal with low jitter, making it suitable for multi-GHz requirements such as telecommunications systems, wireless frequency synthesizers, clock multiplexers, satellite navigation systems, digital broadcast systems, data storage devices, high-performance computing, and high-speed serial interfaces. The working principle of the PL123-05SC is based on the concept of a PLL, which consists of an oscillator, a phase comparator, a low-pass filter, and a VCO.

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