Datasheet > ICS844004AGIT

ICS844004AGIT

更新时间： 2024-02-16 12:15:10

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
12页	177K
描述
FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

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ICS844004AGIT 数据手册

PRELIMINARY

ICS844004I

FEMTOCLOCKS™ CRYSTAL-TO-

LVDS FREQUENCY SYNTHESIZER

Integrated

Circuit

Systems, Inc.

GENERAL DESCRIPTION

FEATURES

The ICS844004I is a 4 output LVDS Synthesizer • Four LVDS outputs

optimized to generate Fibre Channel reference

ICS

• Selectable crystal oscillator interface

or LVCMOS/LVTTL single-ended input

HiPerClockS™

clock frequencies and is a member of the

HiPerClocks^TMfamily of high performance clock

solutions from ICS. Using a 26.5625MHz 18pF

• Supports the following output frequencies: 212.5MHz,

parallel resonant crystal, the following frequencies can be

generated based on the 2 frequency select pins (F_SEL[1:0]):

212.5MHz, 187.5MHz, 159.375MHz, 156.25MHz, 106.25MHz

and 53.125MHz. The ICS844004I uses ICS’ 3^rdgeneration

low phase noise VCO technology and can achieve <1ps

typical rms phase jitter, easily meeting Fibre Channel jitter

requirements. The ICS844004I is packaged in a small 24-pin

TSSOP package.

187.5MHz, 159.375MHz, 156.25MHz, 106.25MHz, 53.125MHz

• VCO range: 560MHz - 680MHz

• RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal

(637KHz - 10MHz): 0.65ps (typical)

• Full 3.3V or 2.5V supply modes

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

FREQUENCY SELECT FUNCTION TABLE

PIN ASSIGNMENT

Inputs

Output

Frequency

(MHz)

nQ1

nQ2

Input

M Divider N Divider M/N Divider

Value

Frequency F_SEL1 F_SEL0

(MHz)

V^DDo

V^DDO

Value

26.5625

26.04166

23.4375

212.5

159.375

106.25

53.125

156.25

187.5

nQ0

nQ3

GND

nPLL_SEL

nXTAL_SEL

V^DDA

TEST_CLK

GND

XTAL_IN

XTAL_OUT

F_SEL0

V^DD

F_SEL1

ICS844004I

24-LeadTSSOP

4.40mm x 7.8mm x 0.92mm

package body

BLOCK DIAGRAM

Pulldown

F_SEL[1:0]

G Package

Top View

Pulldown

nPLL_SEL

F_SEL[1:0]

0 0 ÷3

nQ0

Pulldown

TEST_CLK

0 1 ÷4

26.5625MHz

XTAL_IN

1 0 ÷6

VCO

637.5MHz

(w/26.5625MHz

Reference)

1 1 ÷12

nQ1

Phase

Detector

OSC

XTAL_OUT

Pulldown

nXTAL_SEL

nQ2

M = 24 (fixed)

nQ3

Pulldown

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.

844004AGI

www.icst.com/products/hiperclocks.html

REV. A JUNE 15, 2005

12 3 4 5 6 7...12

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与ICS844004AGIT相关器件

型号	品牌	获取价格	描述	数据表
ICS844004AI01	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844004AI04	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL/LVCMOS-TO-LVDS FREQUENCY SYNTHESIZER
ICS844004I	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
ICS844004I-01	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844004I-04	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL/LVCMOS-TO-LVDS FREQUENCY SYNTHESIZER
ICS844008-16	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844008AKI-46LF	IDT	获取价格	Clock Generator, PQCC32
ICS844008AY-16	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844008AY-16LF	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844008AY-16LFT	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE

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