Datasheet > 844004AGT

844004AGT

更新时间： 2024-09-18 10:01:35

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
13页	1037K
描述
Clock Generator

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中文翻译

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数据手册

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844004AGT 数据手册

PRELIMINARY

FEMTOCLOCKS™ CRYSTAL-TO-LVDS

FREQUENCY SYNTHESIZER

ICS844004

GENERAL DESCRIPTION

FEATURES

The ICS844004 is a 4 output LVDS Synthesizer

• Four LVDS outputs

ICS

HiPerClockS™

optimized to generate Fibre Channel reference

clock frequencies and is a member of the

HiPerClocks^TMfamily of high performance clock

solutions from IDT. Using a 26.5625MHz 18pF

• Selectable crystal oscillator interface

or LVCMOS/LVTTL single-ended input

• Supports the following output frequencies: 212.5MHz,

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

53.125MHz

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 ICS844004 uses IDT’s 3^rdgeneration

low phase noise VCO technology and can achieve <1ps typical

rms phase jitter, easily meeting Fibre Channel jitter

requirements. The ICS844004 is packaged in a small 24-pin

TSSOP package.

• 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

• 0°C to 70°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free (RoHS 6)

packages

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

nPLL_SEL

nQ3

GND

nXTAL_SEL

V^DDA

TEST_CLK

GND

XTAL_IN

XTAL_OUT

F_SEL0

V^DD

F_SEL1

ICS844004

24-Lead TSSOP

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 DeviceTechnology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.

IDT^™/ ICS^™LVDS FREQUENCY SYNTHESIZER

ICS844004AG REV AAUGUST 8, 2006

12 3 4 5 6 7...13

中文翻译

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与844004AGT相关器件

型号	品牌	获取价格	描述	数据表
844004AK-104	IDT	获取价格	FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
844004AK-104LF	IDT	获取价格	FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
844004AK-104LFT	IDT	获取价格	FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
844004AK-104T	IDT	获取价格	FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
844004AKI-104	IDT	获取价格	Clock Generator, 226.66MHz, 5 X 5 MM, 0.925 MM HEIGHT, MO-220VHHD-2, VFQFN-32
844004BGLF	IDT	获取价格	Clock Generator, 226.66MHz, CMOS, PDSO24
844008AKI-01LF	IDT	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
844008AKI-01LFT	IDT	获取价格	Clock Generator, 156.25MHz, 5 X 5 MM, 0.925 MM HEIGHT, ROHS COMPLIANT, MO-220VHHD, VFQFN-3
844008AKI-46LF	IDT	获取价格	FemtoClock Crystal-to-LVDS Clock Generator
844008AKI-46LFT	IDT	获取价格	FemtoClock Crystal-to-LVDS Clock Generator

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