The AD808 is a fiber optic receiver with quantizer and clock recovery and data retiming. The product meets the CCITT G.958 standard and the Bellcore TR-NWT-000253 standard, supports 622 Mbps clock recovery and data retiming, accepts NRZ data, does not require a preamble code, and uses a phase-locked loop clock recovery, without a crystal.
The AD808 provides a complete receiver solution for 622 Mbps NRZ data, integrating quantization, level detection, clock recovery and data retiming in a single 16‑lead narrow SOIC package. It meets CCITT G.958 STM‑4 Type A and Bellcore TR‑NWT‑000253 OC‑12 jitter requirements, delivering 2.5° rms output jitter and low‑power operation (400 mW). The device operates from a single supply of either +5 V or –5.2 V and offers 10 kH ECL/PECL compatible outputs.
Key specifications include a quantizer sensitivity of 4 mV, input voltage range of 2.5 V, and programmable loop damping for jitter control. Absolute maximum ratings allow up to +8 V supply and a junction temperature of +165 °C. Detailed pin configurations, functional block diagrams, and typical performance graphs are provided for design integration.
| Quantizer Sensitivity | 4 mV (typ) |
|---|---|
| Supply Voltage | +5 V or –5.2 V (single supply) |
| Power Consumption | 400 mW |
| Clock/Data Rate | 622 Mbps |
| Output Type | 10 kH ECL/PECL compatible |
| Package | 16‑Lead Narrow 150 mil SOIC |
| Jitter | 2.5° rms |
The AD808 quantizer has a typical sensitivity of 4 mV.
The device operates from a single supply of either +5 V or –5.2 V.
The AD808 consumes 400 mW of power.
It supports 622 Mbps NRZ data for clock recovery and data retiming.