Datasheet > ICS844023I

ICS844023I

更新时间： 2024-09-13 11:14:43

品牌	Logo	应用领域
矽成 - ICSI		时钟发生器
页数	文件大小	规格书
10页	152K
描述
FEMTOCLOCKS? CRYSTAL-TO- LVDS CLOCK GENERATOR

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中文翻译

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数据手册

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ICS844023I 数据手册

PRELIMINARY

ICS844023I

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ CRYSTAL-TO- LVDS

CLOCK GENERATOR

GENERAL DESCRIPTION

FEATURES

• One Differential LVDS output

The ICS844023I is an Ethernet Clock Generator

ICS

HiPerClockS™

and a member of the HiPerClocks^TMfamily of high

performance devices from ICS. The ICS844023I

uses an 18pF parallel resonant crystal over the

range of 24.5MHz - 34MHz. For Ethernet appli-

• Crystal oscillator interface, 18pF parallel resonant crystal

(24.5MHz - 34MHz)

• Output frequency range: 245MHz - 340MHz

• VCO range: 490MHz - 680MHz

cations, a 25MHz crystal is used to generate 250MHz. The

ICS844023I has excellent <1ps phase jitter performance, over

the 1.875MHz - 20MHz integration range. The ICS844023I is

packaged in a small 8-pin TSSOP, making it ideal for use in

systems with limited board space.

• RMS phase jitter @ 250MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.38ps (typical)

• 3.3V or 2.5V operating supply

• -40°C to 85°C ambient operating temperature

• Available in both standard and lead-free RoHS-compliant

packages

COMMON CONFIGURATION TABLE

Inputs

Output Frequency

(MHz)

Multiplication

Value M/N

Crystal Frequency (MHz)

250

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

VDDA

GND

VDD

XTAL_OUT

XTAL_IN

OSC

XTAL_OUT

VCO

Phase

Detector

N = ÷2 (fixed)

490MHz - 680MHz

ICS844023I

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm

package body

M = ÷20 (fixed)

G Package

TopView

The Preliminary Information presented herein represents a product in prototyping or pre-production.The noted characteristics are based on initial

product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.

844023AGI

www.icst.com/products/hiperclocks.html

REV.B JANUARY 6, 2006

12 3 4 5 6 7...10

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