8T49N445-999ASGI datasheet, PDF

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8T49N445-999ASGI: Descriptionclock generators & support products femto NG clock generator; Categorysemiconductor Other integrated circuit (IC); File Size965KB，34 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/; Environmental Compliance

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clock generators & support products femto NG clock generator

8T49N445-999ASGI Parametric

Parameter Name	Attribute value
Manufacture	IDT (Integrated Device Technology)
Product Category	Clock Generators & Support Products
RoHS	Yes
Type	Clock Translators
Max Input Freq	710 MHz
Max Output Freq	1300 MHz
Number of Outputs	4
Duty Cycle - Max	60 %
Operating Supply Voltage	2.5 V, 3.3 V
Operating Supply Curre	1151 mA
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	CABGA-80
Minimum Operating Temperature	- 40 C
Output Type	LVPECL, LVDS
Packaging	Tray
Factory Pack Quantity	184

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FemtoClock

NG QUAD Universal

Frequency Translator

General Description

The IDT8T49N445I is a quad PLL with FemtoClock® NG technology.

The IDT8T49N445I integrates low phase noise Frequency

Translation / Synthesizer and jitter attenuation. It includes alarm and

monitoring functions suitable for networking and communications

applications. The device has four fully independent PLLs, each PLL

is able to generate any output frequency in the 0.98MHz - 312.5MHz

range and most output frequencies in the 312.5MHz - 1,300MHz

range (see Table 3 for details). A wide range of input reference

clocks may be used as the source for the output frequency.

Each PLL of IDT8T49N445I has three operating modes to support a

very broad spectrum of applications:

1) Frequency Synthesizer

IDT8T49N445I

DATA SHEET

Features

•

Fourth generation FemtoClock® NG technology

Four fully independent PLLs

Universal Frequency Translator™ Frequency Synthesizer and

Jitter attenuator

Output is programmable as LVPECL or LVDS

Programmable output frequency: 0.98MHz up to 1,300MHz

Differential inputs support the following input types:

LVPECL, LVDS, LVHSTL, HCSL

Input frequency range: 8kHz - 710MHz (Low-Bandwidth mode)

Input frequency range: 16kHz - 710MHz (High-Bandwidth mode)

REFCLK frequency range: 16MHz - 40MHz

Input clock monitor on each PLL will smoothly switch between

redundant input references

Operation reference frequency range: 16MHz - 40MHz

Input clock monitor and alarm

Factory-set register configuration for power-up default state

Power-up default configuration

Configuration customized via One-Time Programmable ROM

Settings may be overwritten after power-up via I

C Serial interface for register programming

RMS phase jitter at 161.1328125MHz, using 40MHz REFCLK

(12kHz - 20MHz): 465fs (typical), Low Bandwidth Mode (FracN)

RMS phase jitter at 400MHz, using 40MHz REFCLK

(12kHz - 20MHz): 333fs (typical), synthesizer Mode (integer FB)

Full 2.5V supply mode

-40°C to 85°C ambient operating temperature

10mm X 10mm CABGA

Lead-free (RoHS 6) packaging

•

Synthesizes output frequencies from an external reference

clock REFCLK.

Fractional feedback division is used, so there are no

requirements for any specific input reference clock frequency to

produce the desired output frequency with a high degree of

accuracy.

Applications: PCI Express, Computing, General Purpose

Translates any input clock in the 16MHz - 710MHz frequency

range into any supported output frequency.

This mode has a high PLL loop bandwidth in order to track input

reference changes, such as Spread-Spectrum Clock

modulation.

Applications: Networking & Communications.

Translates any input clock in the 8kHz -710MHz frequency

range into any supported output frequency.

This mode supports PLL loop bandwidths in the 10Hz - 580Hz

range and makes use of an external reference clock REFCLK

to provide significant jitter attenuation.

2) High-Bandwidth Frequency Translator

•

3) Low-Bandwidth Frequency Translator

•

Each PLL provides factory-programmed default power-up

configuration burned into One-Time Programmable (OTP) memory.

The configuration is specified by the customer and are programmed

by IDT during the final test phase from an on-hand stock of blank

devices.

To implement other configurations, these power-up default settings

can be overwritten after power-up using the I

C interface and the

device can be completely reconfigured.

IDT8T49N445AASGI REVISION A JUNE 28, 2013

8T49N445-999ASGI Related Products

	8T49N445-999ASGI	8T49N445-999ASGI8
Description	clock generators & support products femto NG clock generator	clock generators & support products femto NG clock generator
Manufacture	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)
Product Category	Clock Generators & Support Products	Clock Generators & Support Products
RoHS	Yes	Yes
Type	Clock Translators	Clock Translators
Max Input Freq	710 MHz	710 MHz
Max Output Freq	1300 MHz	1300 MHz
Number of Outputs	4	4
Duty Cycle - Max	60 %	60 %
Operating Supply Voltage	2.5 V, 3.3 V	2.5 V, 3.3 V
Operating Supply Curre	1151 mA	1151 mA
Maximum Operating Temperature	+ 85 C	+ 85 C
Mounting Style	SMD/SMT	SMD/SMT
Package / Case	CABGA-80	CABGA-80
Minimum Operating Temperature	- 40 C	- 40 C
Output Type	LVPECL, LVDS	LVPECL, LVDS
Packaging	Tray	Reel
Factory Pack Quantity	184	1500

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