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AD808 - Fiber Optic Receiver with Quantizer and Clock Recovery and Data Retiming

General Description

The AD808 provides the receiver functions of data quantization, signal level detect, clock recovery and data retiming for 622 Mbps NRZ data.

Key Features

  • Meets CCITT G.958 Requirements for STM-4 Regenerator.
  • Type A Meets Bellcore TR-NWT-000253 Requirements for OC-12 Output Jitter: 2.5 Degrees RMS 622 Mbps Clock Recovery and Data Retiming Accepts NRZ Data, No Preamble Required Phase-Locked Loop Type Clock Recovery.
  • No Crystal Required Quantizer Sensitivity: 4 mV Level Detect Range: 10 mV to 40 mV, Programmable Single Supply Operation: +5 V or.
  • 5.2 V Low Power: 400 mW 10 KH ECL/PECL Compatible Output Package: 16-Lead Narrow 1.

📥 Download Datasheet

Datasheet Details

Part number AD808
Manufacturer Analog Devices
File Size 145.06 KB
Description Fiber Optic Receiver with Quantizer and Clock Recovery and Data Retiming
Datasheet download datasheet AD808 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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a Fiber Optic Receiver with Quantizer and Clock Recovery and Data Retiming AD808 frequency acquisition without false lock. This eliminates a reliance on external components such as a crystal or a SAW filter, to aid frequency acquisition. The AD808 acquires frequency and phase lock on input data using two control loops that work without requiring external control. The frequency acquisition control loop initially acquires the frequency of the input data, acquiring frequency lock on random or scrambled data without the need for a preamble. At frequency lock, the frequency error is zero and the frequency detector has no further effect. The phase acquisition control loop then works to ensure that the output phase tracks the input phase.