Datasheet > ICS844004I-01

ICS844004I-01

更新时间： 2024-11-04 02:50:59

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
12页	171K
描述
FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

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数据手册

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ICS844004I-01 数据手册

PRELIMINARY

ICS844004I-01

FEMTOCLOCKS™ CRYSTAL-TO-

LVDS FREQUENCY SYNTHESIZER

Integrated

Circuit

Systems, Inc.

GENERAL DESCRIPTION

FEATURES

The ICS844004I-01 is a 4 output LVDS Synthesizer

• Four LVDS outputs

ICS

optimized to generate Ethernet reference clock

• Selectable crystal oscillator interface

or LVCMOS/LVTTL single-ended input

frequencies and is a member of the HiPerClocks^TM

family of high performance clock solutions from

ICS. Using a 25MHz 18pF parallel resonant crystal,

HiPerClockS™

• Supports the following output frequencies: 156.25MHz,

125MHz, 62.5MHz

the following frequencies can be generated based on the 2

frequency select pins (F_SEL[1:0]): 156.25MHz, 125MHz and

62.5MHz. The ICS844004I-01 uses ICS’ 3^rdgeneration

low phase noise VCO technology and can achieve <1ps

typical rms phase jitter, easily meeting Ethernet jitter

requirements. The ICS844004I-01 is packaged in a small 24-

pin TSSOP package.

• VCO range: 560MHz - 680MHz

• RMS phase jitter @ 156.25MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.41ps (typical)

• Full 3.3V or 2.5V supply modes

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

FREQUENCY SELECT FUNCTION TABLE

PIN ASSIGNMENT

nQ1

nQ2

Output

Frequency

(25MHz Ref.)

M Divider N Divider M/N Divider

F_SEL1 F_SEL0

V^DDO

V^DDo

Value

6.25

156.5

125

nQ0

nQ3

nPLL_SEL

GND

V^DD

nXTAL_SEL

2.5

62.5

V^DDA

TEST_CLK

GND

XTAL_IN

XTAL_OUT

Not Used

F_SEL0

V^DD

F_SEL1

ICS844004I-01

24-LeadTSSOP

4.40mm x 7.8mm x 0.92mm

BLOCK DIAGRAM

Pulldown

package body

F_SEL[1:0]

G Package

TopView

Pulldown

nPLL_SEL

F_SEL[1:0]

nQ0

Pulldown

TEST_CLK

0 0 ÷4

0 1 ÷5

25MHz

XTAL_IN

1 0 ÷10

1 1 not used

VCO

625MHz

(w/25MHz

Reference)

nQ1

Phase

Detector

OSC

XTAL_OUT

Pulldown

nXTAL_SEL

nQ2

M = 25 (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-01

www.icst.com/products/hiperclocks.html

REV. A JUNE 15, 2005

12 3 4 5 6 7...12

中文翻译

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与ICS844004I-01相关器件

型号	品牌	获取价格	描述	数据表
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
ICS844008AY-16T	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844008AYI-15	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
ICS844008AYI-15LF	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
ICS844008AYI-15LFT	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

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