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MAX3624

Maxim Integrated Products
Part Number MAX3624
Manufacturer Maxim Integrated Products
Description Precision Clock Generator
Published May 26, 2009
Detailed Description 19-0977; Rev 0; 8/07 Low-Jitter, Precision Clock Generator with Four Outputs www.datasheet4u.com General Description o...
Datasheet PDF File MAX3624 PDF File

MAX3624
MAX3624

Overview
19-0977; Rev 0; 8/07 Low-Jitter, Precision Clock Generator with Four Outputs www.
datasheet4u.
com General Description o CMOS Input: 19MHz to 40.
5MHz Features o Crystal Oscillator Interface: 19.
375MHz to 27MHz o Output Frequencies Ethernet: 62.
5MHz, 125MHz, 156.
25MHz, 312.
5MHz Fibre Channel: 106.
25MHz, 159.
375MHz, 212.
5MHz, 318.
5MHz SONET/SDH: 77.
76MHz, 155.
52MHz, 311.
04MHz o Low Jitter 0.
14psRMS (1.
875MHz to 20MHz) 0.
36psRMS (12kHz to 20MHz) o Excellent Power-Supply Noise Rejection o No External Loop Filter Capacitor Required MAX3624 The MAX3624 is a low-jitter precision clock generator optimized for network application.
The device integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet, Fibre Channel, SONET/SDH, and other networking applications.
Maxim’s proprietary PLL design features ultra-low jitter (0.
36psRMS) and excellent power-supply noise rejection, minimizing design risk for network equipment.
The MAX3624 has three LVPECL outputs and one LVCMOS output.
Selectable output dividers and a selectable feedback divider allow a range of output frequencies.
Applications Ethernet Networking Equipment Fibre Channel Storage Area Network SONET/SDH Network Pin Configuration and Typical Application Circuit appear at end of data sheet.
Ordering Information PART MAX3624UTJ+ TEMP RANGE PIN-PACKAGE 0°C to +85°C 32 TQFN-EP* PKG CODE T3255-3 +Denotes a lead-free package.
*EP = Exposed pad.
Block Diagram IN_SEL MR BYPASS SELA[1:0] QAC_OE LVCMOS BUFFER RESET LOGIC/POR RESET DIVIDER NA LVPECL BUFFER QA_C SELA[1:0] SELB[1:0] FB_SEL[1:0] BYPASS QA_OE QA QA RESET LVCMOS REF_IN 27pF X_IN CRYSTAL OSCILLATOR X_OUT 33pF DIVIDERS: M = 16, 24, 25, 32 NA = 1, 2, 3, 4, 5, 6, 8, 10, 12 NB = 1, 2, 3, 4, 5, 6, 8, 10, 12 DIVIDER M DIVIDER NB 1 0 PFD FILTER RESET 620MHz TO 648MHz VCO 1 RESET 0 QB1_OE LVPECL BUFFER QB1 QB1 QB0_OE LVPECL BUFFER QB0 QB0 MAX3624 FB_SEL[1:0] SELB[1:0] ______________________...


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