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813076CYILFT +BOM

Frequency Generator/Jitter Attenuation Device For Wireless Infrastructure Applications

Produttore:

Renesas Electronics Corporation
ProduttorePart #:

813076CYILFT
Scheda dati:

813076CYILFT Scheda dati (PDF)
Series:

FemtoClock®
Programmabe:

Not Verified
PLL:

Yes
Main Purpose:

Wireless Infrastructure Application
EDA/CAD Modelli:

Richiedi modelli CAD gratuiti per 813076CYILFT

813076CYILFT Descrizione generale

The 813076I is a member of the family of high performance clock solutions from IDT. The 813076I a PLL based synchronous clock solution that is optimized for wireless infrastructure equipment where frequency translation and jitter attenuation is needed.

The device contains two internal PLL stages that are cascaded in series. The first PLL stage attenuates the reference clock jitter by using an internal or external VCXO circuit. The internal VCXO requires the connection of an external inexpensive pullable crystal (XTAL) to the 813076I. This first PLL stage (VCXO PLL) uses external passive loop filter components which are used to optimize the PLL loop bandwidth and damping characteristics for the given application. The output of the first stage VCXO PLL is a stable and jitter-tolerant reference input for the second PLL stage of 30.72MHz. The second PLL stage provides frequency translation by multiplying the output of the first stage up to 614.4MHz. The low phase noise characteristics of the clock signal is maintained by the internal FemtoClock® PLL, which requires no external components or configuration. Two independently configurable frequency dividers translate the 491.52MHz or 614.4MHz internal VCO signal to the desired output frequencies. All frequency translation ratios are set by device configuration pins. Alternative to the clock frequency multiplication functionality, the 813076I can work as a VCXO. Enabling the VCXO mode allows the output frequency of 614.4MHz/N or 491.52MHz/N to be pulled by the input voltage of the VC pin.

Caratteristiche principali

Two operation modes: input frequency multiplier and VCXO
Nine differential LVPECL outputs, organized in three independent output banks
Two selectable differential input clocks can accept the following differential input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
Maximum output frequency: 614.4MHz
FemtoClock VCO frequency: 491.52MHz or 614.4MHz (typical)
Frequency generation optimized for wireless infrastructure equipment
Attenuates the phase jitter of the input clock signal by using a low-cost pullable fundamental mode crystal (XTAL)
Multiplies the input clock frequency by 1, 4, 5, 16 or 20
LVCMOS/LVTTL levels for all input/output controls
PLL fast-lock control
VCXO PLL bandwidth can be optimized for jitter attenuation and reference frequency tracking using external loop filter components
Absolute pull range: ±50ppm
RMS phase jitter (12kHz - 20MHz): 0.97ps (typical)
Full 3.3V supply
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package
For other devices supporting wireless infrastructure clock frequencies, please refer to 813076I-02, 813076I-30, 813076I-31 and 814075
For replacement device use 8T49N286-dddNLGI

Specifiche

Series	FemtoClock®	Programmabe	Not Verified
PLL	Yes	Main Purpose	Wireless Infrastructure Application
Input	HCSL, LVDS, LVHSTL, LVPECL, SSTL, Crystal	Output	LVPECL
Number of Circuits	1	Ratio - Input:Output	3:9
Differential - Input:Output	Yes/Yes	Frequency - Max	614.4MHz
Voltage - Supply	3.135V ~ 3.465V	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	813076C

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