Datasheet > 810251I

810251I

更新时间： 2024-11-05 01:11:39

品牌	Logo	应用领域
艾迪悌 - IDT		石英晶振压控振荡器
页数	文件大小	规格书
15页	238K
描述
VCXO and Synchronous Ethernet Jit ter At tenuator

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810251I 数据手册

VCXO and Synchronous Ethernet

Jitter Attenuator

810251I

Data Sheet

General Description

Features

The 810251I is a high performance, low jitter/low phase noise

VCXO. The 810251i uses a low frequency and low cost pullable

crystal to achieve jitter attenuation for synchronous Ethernet

applications. The 810251I can take an input of either 25MHz or

125MHz and produce a single LVCMOS output of 25MHz.

• One single-ended output (LVCMOS or LVTTL levels),

output Impedance: 15

• Phase jitter attenuation by the VCXO-PLL using a 25MHz pullable

external crystal (XTAL)

• Input frequencies: 25MHz or 125MHz

• Output frequency: 25MHz

The device is packaged in a small 16 lead TSSOP package and is

ideal for use on space constrained boards typically encountered in

most synchronous ethernet applications.

• PLL loop bandwidth adjustable by external components

• 25MHz or 125MHz auto input frequency detect

• Full 3.3V or 2.5V supply voltage

Applications

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

• Available in lead-free (RoHS 6) package

• Synchronous Ethernet v0.39a

• End equipment compliant with Std IEEE 802.039a

Pin Assignment

Block Diagram

PLL_SEL

16 CLK_IN

(External loop

filter inputs.)

VDD

GND

Reserved

LF1 LF0

LF1

LF0

VDDO

GND

25MHz

XTAL_IN

XTAL_OUT

GND

VDDA

VDD

(25MHz or 125MHz

input frequency auto

detect)

810251I

CLK_IN

Pre-

divider

16-Lead TSSOP

PFD

VCXO

4.4mm x 5.0mm x 0.925mm

package body

G Package

(÷1 or ÷5)

25MHz

VCXO-PLL

Top View

Revision B March 3, 2016

12 3 4 5 6 7...15

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810252AGILF	IDT	获取价格	VCXO and Synchronous Ethernet Jit ter At tenuator
810252AGILFT	IDT	获取价格	VCXO and Synchronous Ethernet Jit ter At tenuator
810252AKI-03LF	IDT	获取价格	PLL Based Clock Driver
810252AKI-03T	IDT	获取价格	PLL Based Clock Driver
810252AYI-03LF	IDT	获取价格	PLL Based Clock Driver
810252BKI-02	IDT	获取价格	PLL Based Clock Driver, 810252 Series, 2 True Output(s), 0 Inverted Output(s), 5 X 5 MM, 0
810252BKI-02LF	IDT	获取价格	PLL Based Clock Driver, 810252 Series, 2 True Output(s), 0 Inverted Output(s), 5 X 5 MM, 0
810252BKI-02T	IDT	获取价格	PLL Based Clock Driver, 810252 Series, 2 True Output(s), 0 Inverted Output(s), 5 X 5 MM, 0
810252BKI-03LF	IDT	获取价格	VCXO Jitter Attenuator and FemtoClock™ Multip
810252BKI-03LFT	IDT	获取价格	VCXO Jitter Attenuator and FemtoClock™ Multip