8T49N105A-002NLGI

Series:	FemtoClock® NG
Packaging:	Tray
Part Status:	Active
PLL:	Yes with Bypass
Input:	HCSL, LVDS, LVHSTL, LVPECL, Crystal
Output:	LVDS
Number of Circuits:	1
Ratio - Input:Output:	2:1
Differential - Input:Output:	Yes/Yes
Frequency - Max:	61.44MHz
Divider/Multiplier:	Yes/No
Voltage - Supply:	2.375 V ~ 3.465 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	40-VFQFN Exposed Pad
Supplier Device Package:	40-QFN (6x6)

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8T49N105A-002NLGI Clock Generators And Its Working Principle

The 8T49N105A-002NLGI Clock Generators are widely used clock sources in the present day world. They are designed for demanding applications that require low jitter clocks and their integrated features provide ultra-high frequency synthesis capability. The 8T49N105A-002NLGI can be used in wireless communication and other high speed communication systems. This Clock Generator is also ideal for controlling data converters, cellular base stations and other high speed communication/Networking applications.

General Description

The 8T49N105A-002NLGI is a fully integrated Crystal Ceramic Oscillator (CCO) with a Synthesized Frequency Source. It integrates three primary elements to produce a high quality, low jitter clock source; an oscillator circuit to generate an exact frequency, a synthesizer to adjust the output frequency and a PLL (Phase Locked Loop) to lock the output frequency to a reference frequency.The crystal oscillator is made up of a Quartz Crystal Resonator (QCR) and Capacitor (C). The oscillator is connected to a voltage controlled oscillator (VCO) circuit that produces a higher frequency than the resonator’s frequency. This frequency is then fed to the PLL for further processing. The PLL circuitry then locks the output frequency to the reference frequency by means of feedback from the VCO circuit.

Features

The 8T49N105A-002NLGI offers a variety of features which make it ideal for high speed communication systems. The device boasts a wide frequency synthesizing capability, adjustable frequency range of 2kHz to 130MHz, ultra low jitter and output buffer. Additionally, the device features fast start-up and excellent frequency stability. The 8T49N105A-002NLGI also includes integrated programmable digital and analog output voltage control, allowing users to control their clock source output frequency accurately. The digital control of the output frequency is achieved with an I2C Interface, while the analog control of the output frequency is done by means of an On Chip Voltage Regulator Control pin. The device can be programmed to a variety of output frequency settings, allowing users to select the most suitable frequency source for a particular application. The device can also be used to generate high frequency signals in fast clock applications such as high-speed Ethernet and Fibre Channel.

Working Principle

The 8T49N105A-002NLGI works by generating a reference frequency internally and then locking the output frequency to this internal reference frequency by means of a PLL circuit. The reference frequency is generated using the company’s patented piezoelectric crystal technology. This technology ensures accurate and consistent frequencies by utilizing a wide range of QCRs. The Output Frequency settings are controlled by adjusting the parameters of the PLL. The frequency can be set to any frequency from 2kHz to 130MHz. The device then generates a low jitter, crystal accurate frequency by phase-locking the output frequency to the reference frequency.

Applications

The 8T49N105A-002NLGI Clock Generators are widely used in a variety of applications. Its fast start-up, rich synthesizing capability and low jitter make it ideal for broadcast, military and telecommunications systems. This device can also be used in data converters, cellular base stations, Wireless Access Points and other areas requiring highly configurable synthesized clocks. The 8T49N105A-002NLGI has also found application in high-speed networking systems, where its low jitter clock output can reduce errors and improve the performance of the network. Furthermore, because of its wide frequency range, multiple frequency outputs and low jitter, this device is also used in high-speed information processing applications such as in medical imaging equipment.

Conclusion

The 8T49N105A-002NLGI Clock Generators are essential components in many advanced communication and networking applications. Its wide range of integrated features provide a highly configurable and low jitter clock source which can be used in a variety of demanding applications. With its low jitter outputs and wide frequency range, the 8T49N105A-002NLGI is an ideal solution for many clock and timing applications.

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