Datasheet > 8440259AK-45

8440259AK-45

更新时间： 2024-11-05 04:28:15

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
19页	592K
描述
Clock Generator, 156.25MHz, 5 X 5 MM, 0.925 MM HEIGHT, MO-220VHHD-2, VFQFN-32

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8440259AK-45 数据手册

PRELIMINARY

FEMTOCLOCK™ CRYSTAL/LVCMOS-TO-

LVDS/LVCMOS FREQUENCY SYNTHESIZER

ICS8440259-45

GENERAL DESCRIPTION

ICS

FEATURES

• One differential LVDS output at 156.25MHz or 125MHz

The ICS8440259-45 is a 9 output synthesizer

optimized to generate Gigabit and 10 Gigabit

Ethernet clocks and is member of the

Four differential LVDS outputs at 125MHz

Three LVCMOS/LVTTL single-ended outputs at 125MHz

One LVCMOS/LVTTL single-ended output at 3.90625MHz

HiPerClockS™

HiPerClockS™family of high performance clock

solutions from IDT. Using a 25MHz, 18pF parallel

• Selectable crystal oscillator interface or LVCMOS/LVTTL

single-ended input and PLL bypass from a single select pin

resonant crystal, the device will generate both 156.25MHz,

125MHz and 3.90625MHz clocks with mixed LVDS and

LVCMOS/LVTTL output levels. The ICS8440259-45 uses IDT’s

3^rdgeneration low phase noise VCO technology and can

achieve <1ps typical rms phase jitter, easily meeting Ethernet

jitter requirements. The ICS8440259-45 is packaged in a small,

5mm x 5mm VFQFN package that is optimum for applications

with space limitations.

• VCO range: 490MHz - 680MHz

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

(1.875MHz - 20MHz): 0.41ps (typical), LVDS output

• RMS phase jitter @ 156.25MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.41ps (typical), LVDS output

• LVDS supply voltage modes: full 3.3V and full 2.5V

• LVCMOS supply voltage modes:

Core/Output Core/Output

3.3V/3.3V 3.3V/2.5V

Core/Output

2.5V/2.5V

• 0°C to 70°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free (RoHS6)

packages

BLOCK DIAGRAM

Pullup

nPLL_BYPASS

Pulldown

F_SEL

Pulldown

REF_CLK

nQ0

÷5

÷4

25MHz

VCO

490-680MHz

Phase

Detector

XTAL_IN

OSC

XTAL_OUT

nQ1

÷5

PIN ASSIGNMENT

÷25

nQ2

nQ3

32 31 30 29 28 27 26 25

nQ0

V^DDO_LVCMOS

nQ4

ICS8440259-45

32-Lead VFQFN

5mm x 5mm x 0.925mm

package body

GND

nQ1

V^DDO_LVDS

V^DDO_LVCMOS

K Package

Top View

nQ2

GND

10 11 12 13 14 15 16

÷32

The Preliminary Information presented herein represents a product in pre-production.The noted characteristics are based on initial product characterization

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

IDT^™/ ICS^™LVDS/LVCMOS FREQUENCY SYNTHESIZER

ICS8440259AK-45 REV. B JULY 30, 2007

12 3 4 5 6 7...19

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与8440259AK-45相关器件

型号	品牌	获取价格	描述	数据表
8440259AK-45LF	IDT	获取价格	VFQFPN-32, Tray
8440259AK-45LFT	IDT	获取价格	VFQFPN-32, Reel
8440259AK-45T	IDT	获取价格	Clock Generator, 156.25MHz, 5 X 5 MM, 0.925 MM HEIGHT, MO-220VHHD-2, VFQFN-32
8440259D-05	IDT	获取价格	FemtoClock NG Crystal/LVCMOS-to-LVDS/LVCMOS Frequency Synthesizer
8440259DK-05LF	IDT	获取价格	FemtoClock NG Crystal/LVCMOS-to-LVDS/LVCMOS Frequency Synthesizer
8440259DK-05LFT	IDT	获取价格	FemtoClock NG Crystal/LVCMOS-to-LVDS/LVCMOS Frequency Synthesizer
8440259DK-45LF	IDT	获取价格	FEMTOCLOCK CRYSTAL/LVCMOS-TO LVDS LVCMOS FREQUENCY SYNTHESIZER
8440259DK-45LFT	IDT	获取价格	FEMTOCLOCK CRYSTAL/LVCMOS-TO LVDS LVCMOS FREQUENCY SYNTHESIZER
8440259EKI-45LF	IDT	获取价格	FemtoClock Crystal/LVCMOS-to- LVDS/LVCMOS Frequency Synthesizer
8440259EKI-45LFT	IDT	获取价格	FemtoClock Crystal/LVCMOS-to- LVDS/LVCMOS Frequency Synthesizer

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