ICS9DB202CGLFT IDT, Integrated Device Technology Inc, ICS9DB202CGLFT Datasheet

ICS9DB202CGLFT

Manufacturer Part Number

ICS9DB202CGLFT

Description

IC JITTER ATTENUATOR 20-TSSOP

Manufacturer

IDT, Integrated Device Technology Inc

Series

HiPerClockS™r

Type

Jitter Attenuatorr

Datasheet

1.ICS9DB202CGLF.pdf (13 pages)

Specifications of ICS9DB202CGLFT

Input

HCSL, LVDS, LVHSTL, LVPECL, SSTL

Output

HCSL

Frequency - Max

140MHz

Voltage - Supply

3.135 V ~ 3.465 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

20-TSSOP

Frequency-max

140MHz

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

9DB202CGLFT

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PCI EXPRESS JITTER ATTENUATOR

IDT

a low bandwidth, high phase noise PLL frequency synthesizer.

In these systems, a jitter-attenuating device may be necessary

in order to reduce high frequency random and deterministic

jitter components from the PLL synthesizer and from the system

board. The ICS9DB202 has two PLL bandwidth modes. In low

bandwidth mode, the PLL loop bandwidth is 500kHz. This setting

offers the best jitter attenuation and is still high enough to pass

a triangular input spread spectrum profile. In high bandwidth

mode, the PLL bandwidth is at 1MHz and allows the PLL to

pass more spread spectrum modulation.

For serdes which have x10 reference multipliers instead of x12.5

multipliers, each of the two PCI Express™ outputs (PCIEX0:1)

can be set for 125MHz instead of 100MHz by configuring the

appropriate frequency select pins (FS0:1).

BYPASS

HiPerClockS™

IC S

nOE0

nOE1

nCLK

ENERAL

™

CLK

LOCK

/ ICS

IREF

™

PCI EXPRESS JITTER ATTENUATOR

The ICS9DB202 is a high perfromance 1-to-2

Differential-to-HCSL 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

IAGRAM

ESCRIPTION

Detector

Phase

Internal Feedback

Current

Set

÷5

Loop

Filter

1 HiZ

0 Enabled

1 HiZ

0 Enabled

VCO

0 ÷4

1 ÷5

FS0

0 ÷5

1 ÷4

FS1

Two 0.7V current mode differential HCSL output pairs

One differential clock input

CLK and nCLK supports the following input types:

LVPECL, LVDS, LVHSTL, SSTL, HCSL

Maximum output frequency: 140MHz

Input frequency range: 90MHz - 140MHz

VCO range: 450MHz - 700MHz

Output skew: 110ps (maximum)

Cycle-to-cycle jitter: 110ps (maximum)

RMS phase jitter @ 100MHz, (1.5MHz - 22MHz):

2.42ps (typical)

3.3V operating supply

0°C to 70°C ambient operating temperature

Available in both standard and lead-free RoHS compliant

packages

Industrial temperature information available upon request

EATURES

PCIEXT0

nPCIEXC0

PCIEXT1

nPCIEXC1

ICS9DB202CG REV B JULY 14, 2006

5.30mm x 7.20mm x 1.75mm

PCIEXC0

PCIEXT0

PLL_BW

6.50mm x 4.40mm x 0.92

20-Lead, 209-MIL SSOP

nOE0

nCLK

GND

CLK

FS0

20-Lead TSSOP

ICS9DB202

package body

body package

ICS9DB202

G Package

F Package

SSIGNMENT

Top View

BYPASS

IREF

FS1

GND

PCIEXT1

PCIEXC1

nOE1

DDA

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ICS9DB202CGLFT Summary of contents

Page 1

PCI EXPRESS JITTER ATTENUATOR G D ENERAL ESCRIPTION The ICS9DB202 is a high perfromance 1-to Differential-to-HCSL Jitter Attenuator designed for HiPerClockS™ use in PCI Express™ systems. In some PCI Express™ systems, such as those found in desktop PCs, ...

Page 2

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR ABLE IN ESCRIPTIONS ...

Page 3

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR BSOLUTE AXIMUM ATINGS Supply Voltage Inputs, V -0. Outputs, V -0. Package Thermal Impedance Lead TSSOP 73.2°C/W (0 lfpm) 20 Lead SSOP ...

Page 4

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR T 4D. HCSL DC C ABLE HARACTERISTICS ...

Page 5

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 -160 -170 -180 -190 1k The illustrated phase noise plot was taken using a low phase noise signal generator, ...

Page 6

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR P ARAMETER 3.3V±5% 3.3V± DDA HCSL GND 0V 3.3V HCSL UTPUT OAD EST PCIEXCx PCIEXTy PCIEXCx PCIEXTy t sk( UTPUT KEW 80% Clock 20% Outputs ...

Page 7

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR OWER UPPLY ILTERING ECHNIQUES As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. The ICS9DB202 provides separate power supplies to isolate any high switching ...

Page 8

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR IFFERENTIAL LOCK NPUT NTERFACE The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL and other differential signals. Both V SWING V and V input requirements. Figures show interface ...

Page 9

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR T 6A ABLE VS IR LOW ABLE OR JA Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards NOTE: Most modern PCB designs use multi-layered boards. The ...

Page 10

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR ACKAGE UTLINE UFFIX FOR T 6A ABLE ACKAGE IMENSIONS ...

Page 11

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR ABLE RDERING NFORMATION ...

Page 12

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR ...

Page 13

ICS9DB202 PCI EXPRESS JITTER ATTENUATOR Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 ...

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