Datasheet > ICS844051CGIT

ICS844051CGIT

更新时间： 2024-11-05 11:14:43

品牌	Logo	应用领域
矽成 - ICSI		晶体时钟发生器外围集成电路光电二极管
页数	文件大小	规格书
11页	202K
描述
FEMTOCLOCKS? CRYSTAL-TO- LVDS CLOCK GENERATOR

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ICS844051CGIT 数据手册

PRELIMINARY

ICS844051I

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ CRYSTAL-TO- LVDS

CLOCK GENERATOR

GENERAL DESCRIPTION

FEATURES

• One Differential LVDS output

The ICS844051I is a Gigabit Ethernet Clock

ICS

HiPerClockS™

Generator and a member of the HiPerClocks^TM

family of high performance devices from ICS.

The ICS844051I can synthesize 10 Gigabit

Ethernet, SONET, or Serial ATA reference clock

• Crystal oscillator interface designed for

18pF parallel resonant crystals (18.125MHz - 23.4375MHz)

• Output frequency range: 145MHz - 187.5MHz and

72.5MHz - 93.75MHz

frequencies with the appropriate choice of crystal and output

divider. The ICS844051I has excellent phase jitter perfor-

mance and 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 @156.25MHz (1.875MHz - 20MHz):

0.45ps (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

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

Pulldown

FREQ_SEL

VDDA

GND

VDD

XTAL_IN

OSC

0 ÷4 (default)

1 ÷8

Phase

Detector

XTAL_OUT

XTAL_IN

VCO

FREQ_SEL

XTAL_OUT

ICS844051I

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm

package body

÷32

(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.

844051CGI

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

12 3 4 5 6 7...11

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