MAX3675
622Mbps, Low-Power, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
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- Single +3.3V or +5.0V Power Supply
- Complies with ANSI, ITU, and Bellcore SDH/SONET Specifications
- Low Power: 215mW at +3.3V
- Selectable Data Inputs, Differential PECL or Analog
- Received-Signal-Strength Indicator (RSSI)
- Loss-of-Power and Loss-of-Lock Monitors
- Differential PECL Clock and Data Outputs
- No External Reference Clock Required
The MAX3675 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 MAX3675 has two differential input amplifiers: one accepts 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 PLL.
Applications
- Add/Drop Multiplexers
- ATM Switches
- Digital Cross-Connects
- SDH/SONET Access Nodes
- SDH/SONET Transmission Systems
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MAX3675
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