Datasheet > ICS844021I-01

ICS844021I-01

更新时间： 2024-11-04 02:54:31

品牌	Logo	应用领域
艾迪悌 - IDT		时钟发生器
页数	文件大小	规格书
13页	265K
描述
FEMTOCLOCKS⑩ 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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ICS844021I-01 数据手册

PRELIMINARY

FEMTOCLOCKS™ CRYSTAL-TO-LVDS

CLOCK GENERATOR

ICS844021I-01

GENERAL DESCRIPTION

FEATURES

• One Differential LVDS output

The ICS844021I-01 is an Ethernet Clock Generator

ICS

HiPerClockS™

and a member of the HiPerClocks^TMfamily of high

performance devices from IDT. The ICS844021I-

01 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: 122.5MHz – 170MHz

• VCO range: 490MHz – 680MHz

cations, a 25MHz crystal is used. The ICS844021I-01 has

excellent <1ps phase jitter performance, over the 1.875MHz –

20MHz integration range. The ICS844021I-01 is packaged in a

small 8-pin TSSOP, making it ideal for use in systems with

limited board space.

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

(1.875MHz – 20MHz): 0.32ps (typical) @ 3.3V

• 3.3V or 2.5V operating supply

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

• Available in both standard (RoHS 5) and lead-free (RoHS 6)

packages

COMMON CONFIGURATION TABLE - Gb ETHERNET

Inputs

Output Frequency

(MHz)

Multiplication

Value M/N

Crystal Frequency (MHz)

125

26.666

33.33

133.33

166.66

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

VDDA

GND

VDD

XTAL_OUT

XTAL_IN

OSC

VCO

Phase

Detector

N = ÷4 (fixed)

490MHz - 680MHz

ICS844021I-01

XTAL_OUT

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm

package body

M = ÷20 (fixed)

G Package

Top View

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

and/or qualification.Integrated DeviceTechnology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.

IDT^™/ ICS^™LVDS CLOCK GENERATOR

ICS844021BGI-01 REV. C SEPTEMBER 27, 2007

12 3 4 5 6 7...13

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