Datasheet > ICS840051I

ICS840051I

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
10页	205K
描述
FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER

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ICS840051I 数据手册

ICS840051I

Integrated

Circuit

Systems, Inc.

EMTO

LOCKS™ CRYSTAL

-TO-

LVCMOS/LVTTL CLOCK

GENERATOR

GENERAL DESCRIPTION

FEATURES

The ICS840051I is a Gigabit Ethernet Clock • 1 LVCMOS/LVTTL output, 15Ω output impedance

ICS

Generator and a member of the HiPerClocks^TM

• Crystal oscillator interface designed for

family of high performance devices from ICS.The

18pF parallel resonant crystals

HiPerClockS™

ICS840051I can synthesize 10 Gigabit Ethernet,

SONET, or Serial ATA reference clock fre-

• Output frequency range: 70MHz - 170MHz

• VCO range: 560MHz - 680MHz

quencies with the appropriate choice of crystal and output

divider.The ICS840051I has excellent phase jitter performance

and is packaged in a small 8-pin TSSOP, making it ideal for

use in systems with limited board space.

• RMS phase jitter at 155.52MHz (1.875MHz - 20MHz):

0.48ps (typical)

• RMS phase noise at 155.52MHz

Offset Noise Power

100Hz ............... -99.7 dBc/Hz

1KHz ................ -120 dBc/Hz

10KHz ................ -128 dBc/Hz

100KHz ................ -127 dBc/Hz

• 3.3V or 2.5V operating supply

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

• Lead-Free fully RoHS compliant

FREQUENCY TABLE

Inputs

Output Frequency

(MHz)

Crystal Frequency (MHz)

20.141601

19.53125

19.44

FREQ_SEL

161.132812

80.566406

156.25

78.125

155.52

77.76

19.44

18.75

150

18.75

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

VDDA

VDD

Pulldown

FREQ_SEL

XTAL_OUT

XTAL_IN

GND

FREQ_SEL

XTAL_IN

OSC

÷4 (default)

÷8

Phase

Detector

VCO

560MHz-680MHz

XTAL_OUT

ICS840051I

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm

package body

÷32

(fixed)

G Package

TopView

840051AGI

www.icst.com/products/hiperclocks.html

REV. A JANUARY 14, 2005

12 3 4 5 6 7...10

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