Datasheet > ICS840021

ICS840021

更新时间： 2024-11-13 22:55:23

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	202K
描述
FEMTOCLOCKS? CRYSTAL-TO-LVCMOS/ LVTTL CLOCK GENERATOR

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数据手册

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ICS840021 数据手册

ICS840021

Integrated

Circuit

Systems, Inc.

EMTO

LOCKS™ CRYSTAL

-TO-

LVCMOS/LVTTL CLOCK

GENERATOR

GENERAL DESCRIPTION

FEATURES

The ICS840021 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.The

18pF parallel resonant crystal

HiPerClockS™

ICS840021 uses a 25MHz crystal to synthesize

125MHz.The ICS840021 has excellent phase jitter

• Output frequency: 125MHz

performance, over the 1.875MHz – 20MHz integration range.

The ICS840021 is packaged in a small 8-pin TSSOP, making it

ideal for use in systems with limited board space.

• VCO range: 560MHz to 680MHz

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

(1.875MHz - 20MHz): 0.34ps (typical)

• RMS phase noise at 125MHz (typical)

Phase noise:

Offset

Noise Power

100Hz ............... -96.9 dBc/Hz

1KHz ..............-122.2 dBc/Hz

10KHz ..............-131.1 dBc/Hz

100KHz ..............-129.5 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

BLOCK DIAGRAM

PIN ASSIGNMENT

VDDA

VDD

25MHz

XTAL_IN

XTAL_OUT

XTAL_IN

GND

Phase

Detector

÷5

OSC

VCO

XTAL_OUT

ICS840021

÷25

(fixed)

8-Lead TSSOP

4.40mm x 3.0mm x 0.925mm package body

G Package

TopView

840021AG

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 30, 2004

12 3 4 5 6 7...11

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与ICS840021相关器件

型号	品牌	获取价格	描述	数据表
ICS840021AG	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVCMOS/ LVTTL CLOCK GENERATOR
ICS840021AGI	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
ICS840021AGILF	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
ICS840021AGILFT	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
ICS840021AGIT	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
ICS840021AGLF	IDT	获取价格	Clock Generator, 125MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
ICS840021AGLFT	IDT	获取价格	Clock Generator, 125MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
ICS840021AGLN	IDT	获取价格	Clock Generator, 125MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
ICS840021AGT	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVCMOS/ LVTTL CLOCK GENERATOR
ICS840021I	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER