MAX3625B Datasheet | Maxim Integrated

Description Features - Crystal Oscillator Interface: 24.8MHz to 27MHz - CMOS Input: Up to 320MHz - Output Frequencies Ethernet: 62.5MHz, 125MHz, 156.25MHz, 312.5MHz 10G Fibre Channel: 159.375MHz, 318.75MHz - Low Jitter 0.14ps RMS (1.875MHz to 20MHz) 0.36ps RMS (12k Hz to 20MHz) - Excellent Power-Supply Noise Rejection - No External Loop Filter Capacitor Required The MAX3625B is a low-jitter, precision clock generator optimized for networking applications. The device integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet, 10G Fibre Channel, and other networking applications. Maxim’s proprietary PLL design features ultra-low jitter and excellent power-supply noise rejection, minimizing design risk for network equipment. The MAX3625B has three LVPECL outputs. Selectable output dividers and a selectable feedback divider allow a range of output frequencies. Applications Ethernet Networking Equipment Fibre Channel Storage Area Network Typical Application Circuit appears at end of data sheet. PART MAX3625BEUG+ Ordering Information TEMP RANGE -40°C to +85°C PIN-PACKAGE 24 TSSOP-EP- +Denotes a lead(Pb)-free/Ro HS-pliant package. - EP = Exposed pad. Block Diagram IN_SEL MR BYPASS SELA[1:0] SELA[1:0] SELB[1:0] FB_SEL BYPASS QA_OE RESET LOGIC/POR RESET DIVIDER NA LVPECL BUFFER QA QA RESET LVCMOS REF_IN 27p F X_IN CRYSTAL OSCILLATOR X_OUT 33p F DIVIDERS: M = 24, 25 NA = 10, 2, 4, 5 NB = 10, 2, 4, 5 LVPECL BUFFER QB0 QB0 DIVIDER M DIVIDER NB 1 0 PFD FILTER RESET 620MHz TO 648MHz VCO 1 RESET LVPECL BUFFER QB1 QB1 QB_OE 0 FB_SEL SELB[1:0] ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at .maxim-ic.. .. Low-Jitter, Precision Clock Generator with Three Outputs MAX3625B ABSOLUTE MAXIMUM RATINGS Supply Voltage Range...