Datasheet > ICS557-03

ICS557-03

更新时间： 2024-11-10 22:17:35

品牌	Logo	应用领域
矽成 - ICSI		PC 时钟
页数	文件大小	规格书
9页	226K
描述
PCI-EXPRESS CLOCK SOURCE

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ICS557-03 数据手册

ICS557-03

PCI-EXPRESS CLOCK SOURCE

Description

Features

The ICS557-03 is a spread spectrum clock generator

supporting PCI-Express and Ethernet requirements.

The device is used for PC or embedded systems to

substantially reduce electromagnetic interference

(EMI). The device provides two differential (HCSL)

spread spectrum outputs. This device is pin configured

to select spread and clock selection. Using ICS’

patented Phase-Locked Loop (PLL) techniques, the

device takes a 25 MHz crystal input and produces two

pairs of differential outputs (HCSL) at 25 MHz, 100

MHz, 125 MHz and 200 MHz clock frequencies. It also

provides spread selection of 0.25%, -0.5%, -0.75%,

and no spread.

• Packaged in 16-pin TSSOP

• Available in Pb (lead) free package

• Supports LVDS Output Levels

• Operating voltage of 3.3 V

• Input frequency of 25 MHz

• Outputs (HCSL, 0.7 V Current mode differential pair)

• Jitter 100 ps (peak-to-peak)

• Spread of 0.25%, -0.5%, -0.75%, and no spread.

• Industrial and commercial temperature ranges

Block Diagram

VDD

SS1:SS0

CLK0

Control

Logic

S1:S0

Phase Lock Loop

CLK1

X1/ICLK

Clock

Buffer/

25 MHz

Crystal

crystal or clock

Oscillator

GND

Optional tuning crystal

capacitors

Rr(IREF)

MDS 557-03 E

Revision 061005

Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com

12 3 4 5 6 7...9

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