AD809BRZ-REEL7

The AD809BRZ-REEL7 is a high-performance clock and frequency synthesizer from Analog Devices designed to generate a precise 155.52 MHz output clock. It accepts a 19.44 MHz or 9.72 MHz reference input and uses an internal PLL with selectable ×8 or ×16 synthesis to produce the output frequency. The device supports multiple input logic families including CMOS, ECL, PECL, and TTL, and provides differential ECL/PECL outputs.

Key electrical characteristics include a typical output jitter of 2.0 degrees RMS, low power consumption of 90 mW, and a jitter transfer bandwidth of 200 kHz. The duty cycle tolerance ranges from 15% to 85%. The device operates over a wide temperature range of -40°C to +85°C and can be powered from a single supply of either +5V or -5.2V.

The AD809 is packaged in a 16-pin narrow 150 mil SOIC (16-SOIC) with 0.154-inch body width, suitable for surface mount assembly. It is designed for SONET/SDH and Fiber-in-the-Loop systems requiring a low-jitter 155.52 MHz bit clock. No external frequency synthesis components are needed, though loop damping can be adjusted via an external capacitor.