Datasheet > ICS43002A41

ICS43002A41

更新时间： 2024-11-14 04:22:55

品牌	Logo	应用领域
艾迪悌 - IDT		石英晶振压控振荡器衰减器
页数	文件大小	规格书
23页	1534K
描述
700MHZ, FEMTOCLOCKTM VCXO BASED SONET/SDH JITTER ATTENUATOR

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ICS43002A41 数据手册

700MHZ, FEMTOCLOCK VCXO BASED

ICS843002I-41

SONET/SDH JITTER ATTENUATOR

General Description

Features

The ICS843002I-41 is a member of the

• Two Differential LVPECL outputs

HiperClockS™ family of high performance clock

solutions from IDT. The ICS843002I-41 is a PLL

based synchronous clock generator that is

• Selectable CLKx, nCLKx differential input pairs

HiPerClockS™

• CLKx, nCLKx pairs can accept the following differential

input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL or

single-ended LVCMOS or LVTTL levels

optimized for SONET/SDH line card applications

where jitter attenuation and frequency translation is needed. The

device contains two internal PLL stages that are cascaded in

series. The first PLL stage uses a VCXO which is optimized to

provide reference clock jitter attenuation and to be jitter tolerant,

and to provide a stable reference clock for the 2nd PLL stage

(typically 19.44MHz). The second PLL stage provides additional

frequency multiplication (x32), and it maintains low output jitter by

using a low phase noise FemtoClock™VCO. PLL multiplication

ratios are selected from internal lookup tables using device input

selection pins. The device performance and the PLL multiplication

ratios are optimized to support non-FEC (non-Forward Error

Correction) SONET/SDH applications with rates up to OC-48

(SONET) or STM-16 (SDH). The VCXO requires the use of an

external, inexpensive pullable crystal. VCXO PLL uses external

passive loop filter components which are used to optimize the PLL

loop bandwidth and damping characteristics for the given

line card application.

• Maximum output frequency: 700MHz

• FemtoClock VCO frequency range: 560MHz - 700MHz

• RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal

(12kHz to 20MHz): 0.81ps (typical)

• Full 3.3V or mixed 3.3V core/2.5V output operating supply

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

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

packages

Pin Assignment

The ICS843002I-41 includes two clock input ports. Each one can

accept either a single-ended or differential input. Each input port

also includes an activity detector circuit, which reports input clock

activity through the LOR0 and LOR1 logic output pins. The two

input ports feed an input selection mux. “Hitless switching” is

accomplished through proper filter tuning. Jitter transfer and

wander characteristics are influenced by loop filter tuning, and

phase transient performance is influenced by both loop filter

tuning and alignment error between the two reference clocks.

32 31 30 29 28 27 26 25

LF1

LF0

LOR0

LOR1

ISET

Typical ICS843002I-41 configuration in SONET/SDH Systems:

• VCXO 19.44MHz crystal

V_CC

V_{CCO_LVCMOS}

V_{CCO_LVPECL}

nQB

CLK0

nCLK0

CLK_SEL

QA_SEL2

• Loop bandwidth: 50Hz - 250Hz

V_EE

• Input Reference clock frequency selections:

19.44MHz, 38.88MHz, 77.76MHz, 155.52MHz, 311.04MHz,

622.08MHz

10 11 12 13 14 15 16

• Output clock frequency selections:

19.44MHz, 77.76MHz, 155.52MHz, 311.04MHz, 622.08MHz,

Hi-Z

ICS843002I-41

32-Lead VFQFN

5mm x 5mm x 0.925mm package body

K Package

Top View

IDT™ / ICS™ VCXO BASED SONET/SDH JITTER ATTENUATOR

ICS843002AKI-41 REV. A OCTOBER 25, 2007

12 3 4 5 6 7...23

中文翻译

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与ICS43002A41相关器件

型号	品牌	获取价格	描述	数据表
ICS43002AI01	ICSI	获取价格	FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS43004AI04L	ICSI	获取价格	FEMTOCLOCKS-TM CRYSTAL/LVCMOS-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER
ICS43034A01L	ICSI	获取价格	FEMTOCLOCKS? MULTI-RATE LVPECL FREQUENCY SYNTHESIZER
ICS4320A01L	IDT	获取价格	780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
ICS432BI51L	IDT	获取价格	700MHZ, CYRSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
ICS432DI101L	ICSI	获取价格	700MHZ, DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS-43432	TDK	获取价格	MEMS麦克风(麦克风)
ICS-43434	TDK	获取价格	MEMS麦克风(麦克风)
ICS44002A01L	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TOLVDS FREQUENCY SYNTHES
ICS44002AI01	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

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