ICS93735 datasheet(1/7 Pages) ICST

Nome de Peças	ICS93735

Descrição Electrónicos	DDR Phase Lock Loop Zero Delay Clock Buffer

PDF	7 Pages

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Fabricante Electrônico	ICST [Integrated Circuit Systems]

Página de início	http://www.icst.com

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Integrated

Circuit

Systems, Inc.

ICS93735

0579E—08/06/03

Block Diagram

DDR Phase Lock Loop Zero Delay Clock Buffer

Pin Configuration

48-Pin SSOP

Recommended Application:

DDR Zero Delay Clock Buffer

Product Description/Features:

•

Low skew, low jitter PLL clock driver

•

Max frequency supported = 266MHz (DDR 533)

•I

2C for functional and output control

•

Feedback pins for input to output synchronization

•

Spread Spectrum tolerant inputs

•

3.3V tolerant CLK_INT input

Switching Characteristics:

•

CYCLE - CYCLE jitter (66MHz): <120ps

•

CYCLE - CYCLE jitter (>100MHz): <65ps

•

CYCLE - CYCLE jitter (>200MHz): <75ps

•

OUTPUT - OUTPUT skew: <100ps

•

Output Rise and Fall Time: 500ps - 700ps

•

DUTY CYCLE: 49.5% - 50.5%

Functionality

FB_INT

CLK_INT

PLL

SCLK

SDATA

Control

Logic

FB_OUTT

CLKT0

CLKT1

CLKT2

CLKT3

CLKT4

CLKT5

CLKT6

CLKT7

CLKT8

CLKT9

CLKC0

CLKC1

CLKC2

CLKC3

CLKC4

CLKC5

CLKC6

CLKC7

CLKC8

CLKC9

AVDD

CLK_INT

CLKT

CLKC

FB_OUTT

2.5V (nom)

L

H

L

on

2.5V (nom)

H

L

H

on

2.5V (nom)

< offset freq*

offset freq* offset freq* offset freq*

off

GND

L

H

L

Bypassed/off

GND

H

L

H

Bypassed/off

* The offset frequency is ~ 20 MHz, varying somewhat from part to part.

INPUTS

OUTPUTS

PLL State

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Renesas Technology Corp	ICS93735	160Kb / 9P	Low Cost DDR Phase Lock Loop Zero Delay Buffer 02/11/07
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