Datasheet > ICS841608I

ICS841608I

更新时间： 2024-11-02 12:28:15

品牌	Logo	应用领域
艾迪悌 - IDT		时钟发生器
页数	文件大小	规格书
17页	397K
描述
FEMTOCLOCKS CRYSTAL-TO-HCSL CLOCK GENERATOR VCO: 500MHz

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ICS841608I 数据手册

FEMTOCLOCKS™ CRYSTAL-TO-HCSL

CLOCK GENERATOR

ICS841608I

GENERAL DESCRIPTION

FEATURES

• Eight HCSL outputs: configurable for PCIe (100MHz)

and sRIO (125MHz) clock signals

The ICS841608I is an optimized PCIe and sRIO

ICS

HiPerClockS™

clock generator and member of the HiPerClocks™

family of high-performance clock solutions from IDT.

• Selectable crystal oscillator interface, 25MHz,

18pF parallel resonant crystal or LVCMOS/LVTTL

single-ended reference clock input

The device uses a 25MHz parallel crystal to

generate 100MHz and 125MHz clock signals,

replacing solutions requiring multiple oscillator and fanout buffer

solutions. The device has excellent phase jitter (<1ps rms)

suitable for clock components requiring precise and low-jitter

PCIe or sRIO or both clock signals. Designed for telecom,

networking and industrial applications, the ICS841608I can also

drive the high-speed sRIO and PCIe SerDes clock inputs of

communication processors, DSPs, switches and bridges.

• Supports the following output frequencies:

100MHz or 125MHz

• VCO: 500MHz

• PLL bypass and output enable

• PCI Express (2.5Gb/s) and Gen 2 (5 Gb/s) jitter compliant

• RMS phase jitter @125MHz, using a 25MHz crystal

(1.875MHz – 20MHz): 0.37ps (typical)

• Full 3.3V power supply mode

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

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

packages

BLOCK DIAGRAM

PIN ASSIGNMENT

XTAL_IN

OSC

nQ0

FemtoClock

PLL

XTAL_OUT

÷N

32 31 30 29 28 27 26 25

VCO = 500MHz

÷4

÷5 (default)

Pulldown

REF_IN

XTAL_IN

XTAL_OUT

MR/nOE

V^DD

VDD

nQ7

nQ1

Pulldown

REF_SEL

nQ6

M = ÷20

nQ2

IREF

nQ0

GND

nQ5

Pulldown

BYPASS

FSEL

nQ3

nQ1

10 11 12 13 14 15 16

nQ4

ICS841608I

32-Lead VFQFN

nQ5

5mm x 5mm x 0.925mm

package body

K Package

Top View

nQ6

nQ7

Pulldown

MR/nOE

IDT^™/ ICS^™HCSL CLOCK GENERATOR

ICS841608AKI REV. A JUNE 18, 2008

12 3 4 5 6 7...17

中文翻译

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