Datasheet > 874003AGI-02T

874003AGI-02T

更新时间： 2023-02-26 15:12:56

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管
页数	文件大小	规格书
14页	1027K
描述
PLL/Frequency Synthesis Circuit, PDSO20

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874003AGI-02T 数据手册

PCI EXPRESS™ JITTER ATTENUATOR

ICS874003I-02

GENERAL DESCRIPTION

FEATURES

• Three Differential LVDS output pairs

The ICS874003I-02 is a high performance Dif-

ICS

ferential-to-LVDS Jitter Attenuator designed for

use in PCI Express systems. In some PCI Express

systems, such as those found in desktop PCs, the

PCI Express clocks are generated from a low

HiPerClockS™

• One Differential clock input

• CLK and nCLK supports the following input types:

LVPECL, LVDS, LVHSTL, SSTL, HCSL

bandwidth, high phase noise PLL frequency synthesizer. In

these systems, a jitter attenuator may be required to attenuate

high frequency random and deterministic jitter components

from the PLL synthesizer and from the system board. The

ICS874003I-02 has a bandwidth of 400kHz. The 400kHz

provides an intermediate bandwidth that can easily track

triangular spread profiles, while providing good jitter

attenuation.

• Output frequency range: 98MHz - 320MHz

• Input frequency range: 98MHz - 128MHz

• VCO range: 490MHz - 640MHz

• Cycle-to-cycle jitter: 35ps (maximum)

• Supports PCI-Express Spread-Spectrum Clocking

• The 400kHz bandwidth mode allows the system designer to

make jitter attenuation/tracking skew design trade-offs

The ICS874003I-02 uses IDT’s 3^rdGeneration FemtoClock^TM

PLL technology to achive the lowest possible phase noise.

The device is packaged in a 20 Lead TSSOP package, making

it ideal for use in space constrained applications such as PCI

Express add-in cards.

• 3.3V operating supply

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

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

packages

F_SEL[2:0] FUNCTION TABLE

Inputs

F_SEL2 F_SEL1 F_SEL0 QA0/nQA0, QA0/nQA0 QB0/nQB0

Outputs

÷2

÷5

÷4

÷2

÷5

÷4

÷2

÷4

÷5

÷4

÷5

÷4

BLOCK DIAGRAM

Pullup

OEA

PIN ASSIGNMENT

Pulldown

F_SEL2:0

QA0

nQA1

V^DDO

QB0

QA1

V^DDO

QA0

÷5

÷4

nQA0

QA1

÷2 (default)

nQB0

nQA0

F_SEL2

OEB

GND

nCLK

CLK

F_SEL0

V^DDA

F_SEL1

Pulldown

Pullup

CLK

Phase

Detector

VCO

nQA1

490 - 640MHz

nCLK

OEA

V^DD

QB0

ICS874003I-02

20-Lead TSSOP

6.5mm x 4.4mm x 0.92mm

package body

÷5

÷4

÷2 (default)

nQB0

M = ÷5 (fixed)

G Package

Pulldown

Top View

IDT^™/ ICS^™PCI EXPRESS™ JITTER ATTENUATOR

ICS874003AGI-02 REV A SEPTEMBER 18, 2006

12 3 4 5 6 7...14

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