The AD808 is a fiber optic receiver with quantizer and clock recovery and data retiming functions. The product meets the CCITT G.958 standard for STM-4 regeneration, and Bellcore TR-NWT-000253 standard for OC-12. Its output jitter is 2.5 degrees RMS, supports 622 Mbps clock recovery and data retiming, accepts NRZ data, no preamble required, and uses a phase-locked loop clock recovery, no crystal required. Its quantizer sensitivity is 4 mV, and its programmable level detection range is 10 mV to 40 mV. It can operate on a single power supply with a voltage range of +5 V or -5.2 V. Its power consumption is 400 mW, and its output is compatible with 10 KH ECL/PECL. It is packaged in a 16-lead narrow 150 mil SOIC.
The AD808 integrates a quantizer, level‑detect circuit, phase‑locked loop and clock‑recovery block to provide 622 Mbps NRZ data recovery without a preamble. It operates from a single supply (+5 V or –5.2 V) and consumes about 400 mW.
Key features include 4 mV quantizer sensitivity, programmable level‑detect range (10 mV‑40 mV), 2.5° RMS output jitter, and compliance with CCITT G.958 and Bellcore standards. The device is offered in a 16‑lead narrow SOIC package.
| Output Jitter | 2.5 Degrees RMS |
|---|---|
| Power Supply Voltage | +5 V or -5.2 V |
| Quantizer Sensitivity | 4 mV |
| Level Detect Range | 10 mV to 40 mV (programmable) |
| Power Consumption | 400 mW |
The AD808 consumes about 400 mW of power.
It operates from a single supply of either +5 V or –5.2 V.
The nominal center frequency is 622.08 MHz.
The quantizer sensitivity is typically 4 mV.