CDC421125RGER

Differential - Input:Output:	No/Yes
Base Part Number:	CDC421125
Supplier Device Package:	24-VQFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	3 V ~ 3.6 V
Divider/Multiplier:	Yes/No
Frequency - Max:	125MHz
Series:	--
Ratio - Input:Output:	1:1
Number of Circuits:	1
Output:	LVPECL
Input:	LVCMOS, Crystal
PLL:	Yes
Type:	Clock Generator
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The CDC421125RGER is a type of oscillator device that serves a variety of purposes in many kinds of applications. It is a part of a Clock/Timing category, specifically, Clock Generators, PLLs, Frequency Synthesizers as stated in the title of this article.The CDC421125RGER oscillator works to produce electrical timing signals which help to govern and control the operation of other equipment. It is designed for various applications in consumer, commercial, industrial, and military fields which require precise timing control.This oscillator works differently depending on its particular application. Generally, it utilizes two separate frequencies, one from an external crystal and the other from an internal reference. Then, based on the requirements of the particular application, the oscillator circuit board electrically combines these two input signals to produce either a fixed-frequency signal or a programmable-frequency output signal.For fixed-frequency applications, the CDC421125RGER oscillator uses an external crystal of a certain frequency, typically 16MHz or 20MHz, and the internal reference, to establish a fixed frequency output. This type of output frequency can be used in applications such as clock synchronization, frequency divisions, and time-stamp applications.For applications which require programmable-frequency output, the CDC421125RGER also uses the external crystal and the internal reference to set a base frequency. Then, the oscillator device additionally contains a built-in programmable-frequency generator circuit which is programmed to generate the desired output frequency. This allows the oscillator device to generate a variety of output frequencies that are needed for various applications such as modems, mobile phones, and wireless networks.In both fixed-frequency and programmable-frequency applications, the CDC421125RGER oscillator device utilizes groundbreaking technology to strongly control the stability of the output signal. Its circuit contains a Phase Locked Loop ( PLL ), voltage-controlled oscillator (VCO) and Frequency/Phase Detector (F/PD) which are designed for high precision and repeatability. The VCO is responsible for producing a stable output signal, while the F/PD ensures that the signal generated by the VCO exits at the same frequency as the external crystal plus the internal signal reference. This combination helps to produce a precise output frequency with minimal signal jitter and phase noise.The CDC421125RGER is also very reliable, as it is designed with built-in EMI and RFI protections. It also contains special internal circuitry that prevents the potential of self-oscillations, cross-talk and ESD effects that could potentially damage the oscillator or affect its surrounding circuitry.Overall, the CDC421125RGER oscillator device is an ideal choice for any type of application that necessitates precise timing control. It is used in a variety of applications from stable frequency synchronization in devices like modems and phone networks to time-stamp applications and more. With its powerful combination of advanced technology, built-in protections, stability, and reliability, it is ideal for any application.

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