8T49N004A-066NLGI datasheet, PDF

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8T49N004A-066NLGI: DescriptionClock Generators & Support Products FEMTOCLOCK NG; Categorysemiconductor Analog mixed-signal IC; File Size756KB，37 Pages; ManufacturerIDT (Integrated Device Technology); Environmental Compliance

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8T49N004A-066NLGI Overview

Clock Generators & Support Products FEMTOCLOCK NG

8T49N004A-066NLGI Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	IDT (Integrated Device Technology)
Product Category	Clock Generators & Support Products
RoHS	Details
Type	Clock Generators
Maximum Input Frequency	312.5 MHz
Max Output Freq	1229 MHz
Number of Outputs	4 Output
Operating Supply Voltage	2.5 V, 3.3 V
Operating Supply Current	122 mA, 125 mA
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	VFQFN-32
Packaging	Tray
Jitter	8.3 ps
Factory Pack Quantity	490

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Programmable FemtoClock

NG LVPECL/LVDS

Clock Generator with 4-Outputs

IDT8T49N004I

DATASHEET

General Description

The IDT8T49N004I is a four output Clock Generator with selectable

LVDS or LVPECL outputs. The IDT8T49N004I can generate any one

of four frequencies from a single crystal or reference clock. The four

frequencies are selected from the Frequency Selection Table (Table

3A) and are programmed via I

C interface. The four predefined

frequencies are selected in the user application by two frequency

selection pins. Note the desired programmed frequencies must be

used with the corresponding crystal or clock frequency as indicated

in Table 3A.

Excellent phase noise performance is maintained with IDT’s Fourth

Generation FemtoClock

NG PLL technology, which delivers

sub-400fs RMS phase jitter.

Features

•

Fourth Generation FemtoClock NG PLL technology

Four selectable LVPECL or LVDS outputs via I

CLK, nCLK input pair can accept the following differential input

levels: LVPECL, LVDS, HCSL

FemtoClock NG VCO Range: 1.91GHz - 2.5GHz

RMS phase jitter at 156.25MHz (12kHz - 20MHz):

228fs (typical)

RMS phase jitter at 156.25MHz (10kHz - 1MHz): 175fs (typical)

Full 2.5V or 3.3V power supply

C programming interface

PCI Express (2.5Gb/s), Gen 2 (5Gb/s), and Gen 3 (8Gb/s)

jitter compliant

-40°C to 85°C ambient operating temperature

Lead-free (RoHS 6) packaging

Pin Assignment

CCO

nQ2

nQ3

24 23 22 21 20 19 18 17

nQ0

CCO

nQ1

FSEL1

SCLK

SDATA

FSEL0

nCLK

CLK

XTAL_OUT

XTAL_IN

CCA

LOCK

CLK_SEL

IDT8T49N004I

32-Lead VFQFN

5mm x 5mm x 0.925mm package body

3.15mm x 3.15mm E-Pad

NL Package

IDT8T49N004ANLGI REVISION A OCTOBER 15, 2013

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