849N202CKI-022LFT

Series:	FemtoClock® NG
Packaging:	Tape & Reel (TR)
Part Status:	Active
PLL:	Yes with Bypass
Input:	HCSL, LVDS, LVHSTL, LVPECL, Crystal
Output:	LVPECL
Number of Circuits:	1
Ratio - Input:Output:	3:2
Differential - Input:Output:	Yes/Yes
Frequency - Max:	174.7MHz
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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ThisClock/Timing – Clock Generators, PLLs, Frequency Synthesizers 849N202CKI-022LFT is a digital clock generator/synthesizer featuring four independent digital clock, PLL and frequency synthesizer channels. It provides cost-effective timing and synchronization solutions for high-end consumer, datacom, and telecom applications. 849N202CKI-022LFT has a wide range of application fields such as consumer electronics, automotive, satellite, communication and other applications requiring incremental timing.The 849N202CKI-022LFT clock generator/synthesizer features an on-chip programmable crystal oscillator (TCXO) and allows variable frequency output up to 2.6GHz.The device features an integrated Voltage Controlled Oscillator (VCO), a Phase Locked Loop (PLL), a Dual Modulus Prescaler, and two programmable dividers.The integrated PLL allows for programmable clock frequency multiplication, output duty cycle regulation and noise filtering. Additionally, there is an integrated temperature sensor that allows for programmable temperature compensation.The working principle of 849N202CKI-022LFT is based on the PLL technology. The PLL is a servo-based feedback loop that is used to synchronize the output oscillators with an input reference clock. The PLL generates a frequency error signal form the input reference clock which is used to control the frequency of the output oscillators. The PLL includes an oscillator, a phase-frequency detector, a low-pass filter,a voltage-controlled oscillator and a charge pump The PLL acts as the control loop and adjusts the parameters of the VCO to keep the output frequency in lock.The 849N202CKI-022LFT clock generator/synthesizer offers a wide variety of clock-generator output frequencies and configurations. The on-chip TCXO can be programmed to generate frequencies from 1Hz to 200 KHz. For higher frequencies, the PLL can be used to generate frequencies up to 2.6GHz. By using the integrated PLL and divider circuits, output clocks can be programmed to frequencies based on the input reference clock. The TCXO and the PLL both have analog inputs for temperature compensation, allowing for more accuracy in the output frequency.The 849N202CKI-022LFT clock generator/synthesizer has been successfully used in consumer electronics and automotive applications requiring precise synchronization. With its integrated PLL, the IC can be programmed to achieve high accuracy on the clock frequency. The PLL is also used to filter out any noise and signal distortion which ensures a better signal-to-noise ratio. Additionally, the integrated dividers and prescalers make it possible to reduce the output clock frequency and reduce the power consumption. Overall, 849N202CKI-022LFT is a low-cost, high-precision clock generator/synthesizer designed to meet the needs of consumer electronics, automotive, satellite, communication and other high-end applications. The integrated digital clock, PLL and frequency synthesizers are all synchronized, providing high quality and cost-effective timing and synchronization solution.

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