Datasheet > ICS844251I-15

ICS844251I-15

更新时间： 2024-09-16 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
11页	185K
描述
FEMTOCLOCKS? CRYSTAL-TO-LVDS CLOCK GENERATOR

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数据手册

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ICS844251I-15 数据手册

PRELIMINARY

ICS844251I-15

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ CRYSTAL-TO-LVDS

CLOCK GENERATOR

GENERAL DESCRIPTION

FEATURES

The ICS844251I-15 is an Ethernet Clock • One Differential LVDS output

ICS

HiPerClockS™

Generator and a member of the HiPerClocks^TM

family of high performance devices from ICS.

The ICS844251I-15 uses an 18pF parallel

resonant crystal over the range of 23.2MHz -

• Crystal oscillator interface, 18pF parallel resonant crystal

(23.2MHz - 30MHz)

• Output frequency ranges: 116MHz - 150MHz and

580MHz - 750MHz

30MHz. For Ethernet applications, a 25MHz crystal is

used. The device has excellent <1ps phase jitter

performance, over the 1.875MHz - 20MHz integration

range. The ICS844251I-15 is packaged in a small 8-pin

TSSOP, making it ideal for use in systems with limited

board space.

• VCO range: 580MHz - 750MHz

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

(1.875MHz - 20MHz): 0.46ps (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

Multiplication Value Output Frequency

Crystal Frequency (MHz) FREQ_SEL

M/N

(MHz)

625

26.667

666.67

125

26.667

133.33

BLOCK DIAGRAM

PIN ASSIGNMENT

Pulldown

FREQ_SEL

VDDA

VDD

GND

XTAL_OUT

XTAL_IN

FREQ_SEL

÷1

÷5

XTAL_IN

OSC

XTAL_OUT

VCO

Phase

Detector

FREQ_SEL

580MHz - 750MHz

ICS844251I-15

8-Lead TSSOP

4.4mm x 3.0mm x 0.925mm

package body

M = ÷25 (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.

844251BGI-15

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

12 3 4 5 6 7...11

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