Datasheet > ICS840022AG

ICS840022AG

更新时间： 2024-11-14 04:58:15

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	204K
描述
FEMTOCLOCKS⑩CRYSTAL-TO LVCMOS/LVTTL CLOCK GENERATOR

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数据手册

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ICS840022AG 数据手册

PRELIMINARY

ICS840022

Integrated

Circuit

Systems, Inc.

FEMTO

LOCKS™CRYSTAL

LVCMOS/LVTTL CLOCK

GENERATOR

GENERAL DESCRIPTION

FEATURES

The ICS840022 is a Gigabit Ethernet Clock • 1 LVCMOS/LVTTL output, 7Ω output impedence

ICS

Generator and a member of the HiPerClocks^TM

• Crystal oscillator interface designed for 25MHz,

family of high performance devices from ICS.

18pF parallel resonant crystal

HiPerClockS™

The ICS840022 uses a 25MHz crystal to

synthesize 125MHz or 62.5MHz.The ICS840022

• Output frequencies: 125MHz or 62.5MHz (selectable)

has excellent phase jitter performance, over the 1.875MHz –

20MHz integration range. The ICS840022 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): 0.55ps (typical)

• RMS phase noise at 125MHz:

Offset

Noise Power

100Hz ..............-106.3 dBc/Hz

1KHz ..............-126.3 dBc/Hz

10KHz ..............-131.7 dBc/Hz

100KHz ..............-130.8 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

FUNCTION TABLE

Inputs

Output Frequencies

(with a 25MHz crystal)

FREQ_SEL

125MHz

62.5MHz

BLOCK DIAGRAM

PIN ASSIGNMENT

VDDA

VDD

FREQ_SEL

XTAL_OUT

XTAL_IN

GND

FREQ_SEL

÷5

VCO

XTAL_IN

OSC

XTAL_OUT

ICS840022

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm

package body

Phase

Detector

560MHz-680MHz

w/25MHz Ref.

÷10

G Package

TopView

M = ÷25 (fixed)

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.

840022AG

www.icst.com/products/hiperclocks.html

REV. A JANUARY 11, 2005

12 3 4 5 6 7...10

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