MAX3622 Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

MAX3622

Low-Jitter, Precision Clock Generator with Two Outputs

Maxim Integrated 

19-2456; Rev 0; 11/07

Low-Jitter, Precision Clock Generator

with Two Outputs

General Description

The MAX3622 is a low-jitter precision clock generator

optimized for networking applications. The device inte-

grates a crystal oscillator and a phase-locked loop

(PLL) clock multiplier to generate high-frequency clock

outputs for Ethernet and other networking applications.

Maxim’s proprietary PLL design features ultra-low jitter

(0.36psRMS) and excellent power-supply noise rejec-

tion, minimizing design risk for network equipment.

The MAX3622 has one LVPECL output and one

LVCMOS output. It is available in a 16-pin TSSOP pack-

age and operates over the 0°C to +70°C temperature

range.

Applications

Ethernet Networking Equipment

Typical Application Circuit and Pin Configuration appear

at end of data sheet.

Features

♦ Crystal Oscillator Interface: 25MHz Typical

♦ Output Frequencies: 125MHz and 156.25MHz

♦ Low Jitter

0.14psRMS (1.875MHz to 20MHz)

0.36psRMS (12kHz to 20MHz)

♦ Excellent Power-Supply Noise Rejection

♦ No External Loop Filter Capacitor Required

Ordering Information

PART

TEMP RANGE

MAX3622CUE+ 0°C to +70°C

+Denotes a lead-free package.

PIN-

PACKAGE

16 TSSOP

PKG

CODE

U16-2

Block Diagram

27pF

X_IN

25MHz

X_OUT

33pF

MAX3622

RESET LOGIC/POR

RESET

CRYSTAL

OSCILLATOR

625MHz

PFD

FILTER

VCO

RESET

÷ 25

÷5

RESET

LVCMOS

BUFFER

RESET

÷4

LVPECL

BUFFER

QAC_OE

QA_C

QB_OE

QB

QB

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Share Link: