8T49N445-000ASGI8 datasheet, PDF

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8T49N445-000ASGI8: DescriptionClock Generators u0026 Support Products Femto NG Clock Generator; Categorysemiconductor Analog mixed-signal IC; File Size965KB，34 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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8T49N445-000ASGI8 Overview

Clock Generators u0026 Support Products Femto NG Clock Generator

8T49N445-000ASGI8 Parametric

Parameter Name	Attribute value
Product Category	Clock Generators & Support Products
Manufacturer	IDT (Integrated Device Technology, Inc.)
RoHS	Details
Type	Clock Translators
Maximum Input Frequency	710 MHz
Max Output Freq	1300 MHz
Number of Outputs	4 Output
Duty Cycle - Max	60 %
Operating Supply Voltage	2.5 V, 3.3 V
Operating Supply Current	1151 mA
Maximum Operating Temperature	+ 85 C
Minimum Operating Temperature	- 40 C
Mounting Style	SMD/SMT
Package / Case	CABGA-80
Packaging	Reel
Height	1.4 mm
Jitter	40 ps
Length	10 mm
Moisture Sensitive	Yes
Output Type	LVPECL, LVDS
Factory Pack Quantity	1500
Width	10 mm

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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

8T49N445-000ASGI8 Related Products

	8T49N445-000ASGI8	8T49N445-000ASGI
Description	Clock Generators u0026 Support Products Femto NG Clock Generator	Clock Generators u0026 Support Products Femto NG Clock Generator
Product Category	Clock Generators & Support Products	Clock Generators & Support Products
Manufacturer	IDT (Integrated Device Technology, Inc.)	IDT (Integrated Device Technology, Inc.)
RoHS	Details	Details
Type	Clock Translators	Clock Translators
Maximum Input Frequency	710 MHz	710 MHz
Max Output Freq	1300 MHz	1300 MHz
Number of Outputs	4 Output	4 Output
Duty Cycle - Max	60 %	60 %
Operating Supply Voltage	2.5 V, 3.3 V	2.5 V, 3.3 V
Operating Supply Current	1151 mA	1151 mA
Maximum Operating Temperature	+ 85 C	+ 85 C
Minimum Operating Temperature	- 40 C	- 40 C
Mounting Style	SMD/SMT	SMD/SMT
Package / Case	CABGA-80	CABGA-80
Packaging	Reel	Tray
Height	1.4 mm	1.4 mm
Jitter	40 ps	40 ps
Length	10 mm	10 mm
Moisture Sensitive	Yes	Yes
Output Type	LVPECL, LVDS	LVPECL, LVDS
Factory Pack Quantity	1500	184
Width	10 mm	10 mm

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