Datasheet > ICS840024AGI

ICS840024AGI

更新时间： 2024-11-14 11:14:35

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
12页	242K
描述
FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER

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数据手册

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ICS840024AGI 数据手册

PRELIMINARY

ICS840024I

Integrated

Circuit

Systems, Inc.

FEMTO

CLOCKS™ CRYSTAL- -

LVCMOS/LVTTL F^REQUENCY

SYNTHESIZER

GENERAL DESCRIPTION

FEATURES

• Four LVCMOS/LVTTL outputs, 15Ω typical output impedance

The ICS840024I is a 4 output LVCMOS/LVTTL

ICS

Synthesizer optimized to generate Ethernet

reference clock frequency and is a member of the

HiPerClocks^TMfamily of high performance clock

solutions from ICS.The ICS840024I uses ICS’3^rd

• Selectable crystal oscillator interface

or LVCMOS single-ended input

HiPerClockS™

• Supports the following output frequency:125MHz

generation low phase noise VCO technology and can achieve

1ps or lower typical random rms phase jitter, easily meeting

Ethernet jitter requirements.The ICS840024I is packaged in a

small 20-pin TSSOP package.

• RMS phase jitter @125MHz (1.875MHz - 20MHz):

0.60ps (typical)

• Output supply modes:

Core/Output

3.3V/3.3V

3.3V/2.5V

2.5V/2.5V

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

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

GND

V^DDO

GND

XTAL_IN

XTAL_OUT

Pulldown

nPLL_SEL

nXTAL_SEL

TEST_CLK

nPLL_SEL

V^DDA

Pulldown

nXTAL_SEL

25MHz

XTAL_IN

OSC

V^DD

XTAL_OUT

Phase

Detector

Pulldown

TEST_CLK

VCO

ICS840024I

÷5

20-Lead TSSOP

6.5mm x 4.4mm x 0.92mm

package body

M = ÷25 (fixed)

G Package

Top View

Pulldown

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.

840024AGI

www.icst.com/products/hiperclocks.html

REV. A DECEMBER 16, 2004

12 3 4 5 6 7...12

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