Datasheet > 849S625BYILFT

849S625BYILFT

更新时间： 2022-02-26 12:30:07

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
24页	390K
描述
Crystal-to-LVPECL/LVDS Clock Synthesizer

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数据手册

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849S625BYILFT 数据手册

Crystal-to-LVPECL/LVDS

Clock Synthesizer

849S625

Data Sheet

General Description

Features

The 849S625 is a high frequency clock generator. The 849S625

uses an external 25MHz crystal to synthesize 625MHz, 312.5MHz,

156.25MHz and 125MHz clocks. The 849S625 has excellent

cycle-to-cycle and RMS phase jitter performance.

• Ten selectable differential LVPECL or LVDS outputs

• Output frequencies of 625MHz, 312.5MHz, 156.25MHz or

125MHz using a 25MHz crystal.

• Crystal interface designed for a 25MHz, parallel resonant crystal

• Cycle-to-cycle jitter: 25ps (maximum)

The 849S625 operates at full 3.3V supply mode and is available in a

fully RoHS compliant 48-lead TQFP, E-Pad package.

• RMS phase jitter at 156.25MHz (1MHz - 20MHz):

0.375ps (typical), LVDS outputs

• Output duty cycle: 53% (maximum)

• Full 3.3V supply mode

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

• Available in lead-free (RoHS 6) packaging

Frequency Table for Bank A, B and C Outputs

Crystal Frequency (MHz)

M Feedback Divider VCO Frequency (MHz)

Nx Output Divider

Output Frequency (MHz)

625

312.5

156.25

125

Pin Assignment

48 47 46 45 44 43 42 41 40 39 38 37

XTAL_IN

XTAL_OUT

V^EE

QA1

nQA1

QA2

SELC0

SELC1

OEA

nQA2

V^CCO

VEE

ICS849S625I

V^CC

QA3

nQA3

QA4

nQA4

OEB

OEC

SELB0

SELB1 11

V^EE

QA5

nQA5

13 14 15 16 17 18 19 20 21 22 23 24

48 Lead TQFP, E-Pad

7mm x 7mm x 1.0mm package body

Y Package

Top View

December 2, 2015

12 3 4 5 6 7...24

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