813N252AKI-04LFT datasheet, PDF

Datasheet> All Categories > semiconductor> Analog mixed-signal IC> 813N252AKI-04LFT

813N252AKI-04LFT: DescriptionIC vcxo attenuator/mult 32vfqfpn; Categorysemiconductor Analog mixed-signal IC; File Size243KB，24 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/; Environmental Compliance

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IC vcxo attenuator/mult 32vfqfpn

813N252AKI-04LFT Parametric

Parameter Name	Attribute value
Datasheets
ICS813N252I-04
Standard Package	2,500
Category	Integrated Circuits (ICs)
Family	Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers
Packaging	Tape & Reel (TR)
Type	*
PLL	Yes
Inpu	HCSL, LVDS, LVHSTL, LVPECL, SSTL
Outpu	LVDS, LVPECL
Number of Circuits	1
Ratio - Inpu	Outpu
Differential - Inpu	Outpu
Frequency - Max	312.5MHz
Divider/Multiplie	Yes/N
Voltage - Supply	3.135 V ~ 3.465 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mou
Package / Case	32-VFQFN Exposed Pad
Supplier Device Package	32-VFQFPN (5x5)
Other Names	ICS813N252AKI-04LFTICS813N252AKI-04LFT-ND

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VCXO Jitter Attenuator &

FemtoClock

NG Multiplier

ICS813N252I-04

DATA SHEET

General Description

The ICS813N252I-04 is a PLL based synchronous multiplier that is

optimized for PDH or SONET to Ethernet clock jitter attenuation and

frequency translation. The device contains two internal frequency

multiplication stages that are cascaded in series. The first stage is a

VCXO PLL that is optimized to provide reference clock jitter

attenuation. The second stage is a FemtoClock

NG frequency

multiplier that provides the low jitter, high frequency Ethernet output

clock that easily meets Gigabit and 10 Gigabit Ethernet jitter

requirements. Pre-divider and output divider multiplication ratios are

selected using device selection control pins. The multiplication ratios

are optimized to support most common clock rates used in PDH,

SONET and Ethernet applications. The VCXO requires the use of an

external, inexpensive pullable crystal. The VCXO uses external

passive loop filter components which allows configuration of the PLL

loop bandwidth and damping characteristics. The device is

packaged in a space-saving 32-VFQFN package and supports

industrial temperature range.

Features

•

Fourth generation FemtoClock® Next Generation (NG)

technology

One LVPECL output pair and one LVDS output pair

Each output supports independent frequency selection at 25MHz,

125MHz, 156.25MHz and 312.5MHz

Two differential inputs support the following input types: LVPECL,

LVDS, LVHSTL, SSTL, HCSL

Accepts input frequencies from 8kHz to 155.52MHz including

8kHz, 1.544MHz, 2.048MHz, 19.44MHz, 25MHz, 77.76MHz,

125MHz and 155.52MHz

Attenuates the phase jitter of the input clock by using a low-cost

pullable fundamental mode VCXO crystal

VCXO PLL bandwidth can be optimized for jitter attenuation and

reference tracking using external loop filter connection

FemtoClock NG frequency multiplier provides low jitter, high

frequency output

Absolute pull range: 100ppm

FemtoClock NG VCO frequency: 625MHz

RMS phase jitter @ 125MHz, using a 25MHz crystal

(12kHz – 20MHz): 0.3ps (typical)

3.3V supply voltage

-40°C to 85°C ambient operating temperature

Available in lead-free (RoHS 6) package

Pin Assignment

XTAL_OUT

XTAL_IN

nCLK0

CLK0

nCLK1

CLK1

CCX

32 31 30 29 28 27 26 25

LF1

LF0

23 nQB

CCO

ISET 3

CLK_SEL

20 nQA

19 QA

PDSEL_2

RESERVED 7

10 11 12 13 14 15 16

ODBSEL_1

ODBSEL_0

ODASEL_1

PDSEL_1

PDSEL_0

CCA

ODASEL_0

ICS813N252I-04

32 Lead VFQFN

5mm x 5mm x 0.925mm package body

K Package

Top View

ICS813N252AKI-04 REVISION A MAY 24, 2011

813N252AKI-04LFT Related Products

	813N252AKI-04LFT	813N252AKI-04LF
Description	IC vcxo attenuator/mult 32vfqfpn	IC vcxo attenuator/mult 32vfqfpn
Standard Package	2,500	490
Category	Integrated Circuits (ICs)	Integrated Circuits (ICs)
Family	Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers	Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers
Packaging	Tape & Reel (TR)	Tray
Type	*	*
PLL	Yes	Yes
Inpu	HCSL, LVDS, LVHSTL, LVPECL, SSTL	HCSL, LVDS, LVHSTL, LVPECL, SSTL
Outpu	LVDS, LVPECL	LVDS, LVPECL
Number of Circuits	1	1
Ratio - Inpu	Outpu	Outpu
Differential - Inpu	Outpu	Outpu
Frequency - Max	312.5MHz	312.5MHz
Divider/Multiplie	Yes/N	Yes/N
Voltage - Supply	3.135 V ~ 3.465 V	3.135 V ~ 3.465 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mou	Surface Mou
Package / Case	32-VFQFN Exposed Pad	32-VFQFN Exposed Pad
Supplier Device Package	32-VFQFPN (5x5)	32-VFQFPN (5x5)
Other Names	ICS813N252AKI-04LFTICS813N252AKI-04LFT-ND	800-2671ICS813N252AKI-04LFICS813N252AKI-04LF-NDICS813N252AKI04LF

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