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MAX3676
622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier

High-Performance, Low-Power 622Mbps CDR


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Description
FULL DATA SHEET (PDF, 856kB)
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The MAX3676 is a complete clock-recovery and data- retiming IC incorporating a limiting amplifier. It is intended for 622Mbps SDH/SONET applications and operates from a single +3.3V supply.

The MAX3676 is designed for both section-regenerator and terminal-receiver applications in OC12/STM-4 transmission systems. Its jitter performance exceeds all SONET/SDH specifications.

The MAX3676 has two differential input amplifiers: one accepts positive-referenced emitter-coupled logic (PECL) levels, while the other accepts small-signal analog levels. The analog inputs access the limiting amplifier stage, which provides both a received-signal-strength indicator (RSSI) and a programmable-threshold loss-of-power (LOP) monitor. Selecting the PECL amplifier disables the limiting amplifier, conserving power. A loss-of-lock (LOL) monitor is also incorporated as part of the fully integrated phase-locked loop (PLL).

Key Features   Applications/Uses
  • Single +3.3V or +5.0V Power Supply
  • Exceeds ITU/Bellcore SDH/SONET Regenerator Specifications
  • Low Power: 237mW at +3.3V
  • Selectable Data Inputs, Differential PECL or Analog
  • Received-Signal-Strength Indicator
  • Loss-of-Power and Loss-of-Lock Monitors
  • Differential PECL Clock and Data Outputs
  • No External Reference Clock Required

 
  • Add/Drop Multiplexers
  • ATM Switches
  • Digital Cross-Connects
  • SDH/SONET Access Nodes
  • SDH/SONET Receivers and Regenerators

    Key Specifications:   Clock and Data Recovery
    Part Number Functions Target Operating Range (Gbps) Min. Data Rate (Mbps) Max. Data Rate (Mbps) Multirate Supply Voltage (V) Typ. Supply Current (mA) I/O Type Package Operating Temp. Range (°C) Price**
    MAX3676 
    CDR
    <1 622 622 No 3.3
    5
    65 PECL TQFP/32 -40 to +85 $9.80 @ 1k
    See All Clock and Data Recovery (8)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX3676: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1537; Rev 3; 2005-06-03
    This page last modified: 2007-06-04



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