Datasheet > 8433625

8433625

更新时间： 2024-11-05 01:12:39

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
19页	412K
描述
FemtoClock Crystal-to-3.3V LVPECL Frequency Synthesizer

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8433625 数据手册

FemtoClock Crystal-to-3.3V LVPECL

8433625

Datasheet

Frequency Synthesizer

General Description

Features

The 8433625 is a 3 differential output LVPECL Synthesizer designed

to generate Ethernet reference clock frequencies. Using a 25MHz or

26.041666MHz, 18pF parallel resonant crystal, the following

frequencies can be generated based on the settings of 4 frequency

select pins (DIV_SELA[1:0], DIV_SELB[1:0]): 625MHz, 312.5MHz,

156.25MHz, and 125MHz. The 8433625 has 2 output banks, Bank A

with 1 differential LVPECL output pair and Bank B with 2 differential

LVPECL output pairs.

• Three 3.3V LVPECL outputs on two banks, A Bank with one

LVPECL pair and B Bank with 2 LVPECL output pairs

• Using a 25MHz or 26.041666 crystal, the two output banks can be

independently set for 625MHz, 312.5MHz, 156.25MHz or 125MHz

• Selectable crystal oscillator interface

or LVCMOS/LVTTL single-ended input

• VCO range: 520MHz – 680MHz

• RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz):

The two banks have their own dedicated frequency select pins and

can be independently set for the frequencies mentioned above. The

8433625 uses IDT’s 3^rdgeneration low phase noise VCO technology

and can achieve 1ps or lower typical rms phase jitter, easily meeting

Ethernet jitter requirements. The 8433625 is packaged in a small

24-pin TSSOP package.

0.3ps (typical)

• Full 3.3V supply mode

• 0°C to 70°C ambient operating temperature

• Available in lead-free (RoHS 6) package

Pin Assignment

SELB

V_{CCO_B}

nQB0

DIV_SELB0

VCO_SEL

DIV_

V_{CCO_A}

nQA

OEB

OEA

nQB

XTAL _SEL

RE CL

XTAL _IN

XTAL _OUT

V_EE

FB_DIV

V_CCA

V_CC

DIV SELA0 12

DIV_SE

LA1

8433625

24-Lead TSSOP

4.4mm x 7.8mm x 0.925mm package body

G Package

Top View

Revision B, February 2, 2016

12 3 4 5 6 7...19

中文翻译

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与8433625相关器件

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843441AM-100	IDT	获取价格	Clock Generator, 100MHz, PDSO8, 3.90 X 4.90 MM, 1.375 MM HEIGHT, MS-012, SOIC-8
843441AM-100T	IDT	获取价格	Clock Generator, PDSO8
843441AM-150	IDT	获取价格	Clock Generator, 150MHz, PDSO8, 3.90 X 4.90 MM, 1.375 MM HEIGHT, MS-012, SOIC-8
843441AM-150T	IDT	获取价格	Clock Generator, PDSO8
843441AM-300T	IDT	获取价格	Clock Generator, PDSO8
843441AM-75	IDT	获取价格	Clock Generator, 75MHz, PDSO8, 3.90 X 4.90 MM, 1.375 MM HEIGHT, MS-012, SOIC-8