Datasheet > ICS844022I-02

ICS844022I-02

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	160K
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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ICS844022I-02 数据手册

PRELIMINARY

ICS844022I-02

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO- LVDS

CLOCK GENERATOR

GENERAL DESCRIPTION

FEATURES

• (1) Differential LVDS output

The ICS844022I-02 is an Ethernet Clock

ICS

Generator and a member of the HiPerClocks^TM

family of high performance devices from ICS.The

ICS844022I-02 uses an 18pF parallel resonant

crystal over the range of 24.5MHz - 34MHz. For

HiPerClockS™

• Crystal oscillator interface, 18pF parallel resonant crystal

(24.5MHz - 34MHz)

• Output frequency range: 61.25MHz - 170MHz

• VCO range: 490MHz - 680MHz

Ethernet applications, a 25MHz crystal is used and either

62.5MHz or 125MHz may be selected with the FREQ_SEL

pin. The ICS844022I-02 has excellent <1ps phase jitter

performance, over the 1.875MHz - 20MHz integration range.

The ICS844022I-02 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): 0.44ps (typical)

• 3.3V or 2.5V operating supply

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

COMMON CONFIGURATION TABLE - Gb ETHERNET

Inputs

Output Frequency

Multiplication

(MHz)

Crystal Frequency (MHz) FREQ_SEL

Value M/N

2.5

125

62.5

26.66

33.33

133.33

66.66

166.66

83.33

2.5

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

FREQ_SEL

VDDA

VDD

GND

XTAL_OUT

XTAL_IN

FREQ_SEL

÷4

÷8

XTAL_IN

OSC

XTAL_OUT

VCO

Phase

Detector

FREQ_SEL

490MHz - 680MHz

ICS844022I-02

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.

844022AGI-02

www.icst.com/products/hiperclocks.html

REV. A JUNE 28, 2005

12 3 4 5 6 7...10

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