Motorola MC10SX1226 Data Sheet

SEMICONDUCTOR TECHNICAL DATA

The MC10SX1126 is an integrated limiting amplifier for high frequency fiber optic applications. The device interfaces directly to the trans–impedance amplifier of a typical optical to electrical conversion portion of a fiber optic link. With data rate capabilities in the 1.25Gb/s

FIBER OPTIC

range, the high gain limiting amplification of the SX1126 is ideal for high

speed fiber optic applications like SONET/SDM, ATM, FDDI, Fibre POST AMPLIFIER

Channel or Serial Hippi. The device is functionally and pin compatible to the Signetics SA5225 with a significantly higher bandwidth. The CAZP and CAZN inputs to the limiting amplifier provide an auto-zero function to effectively cancel any input offset voltage present in the amplifier. The SX1126 incorporates a programmable level detect function to identify when the input signal has been lost. This information can be fed back to the Disable input of the device to maintain stability under loss of signal conditions. Using the Vset pin the sensitivity of the level detect can be adjusted. The CLD input is used to filter the level detect input so that random noise spikes are filtered out. The MC10SX1126 is compatible with MECL10H logic levels.

D SUFFIX PLASTIC SOIC PACKAGE

Wideband Operation: 50MHz to 900MHz CASE 751B-05 Programmable Input Signal Level Detection Operation with single +5V or standard ECL supply Standard 16-lead SOIC Package Fully Differential Design to Minimize Noise Affects 10KH Compatible

CAZP CAZN

Limiting ECL

Vset Vref VCCE Dout Dout GNDE LOS LOS

Amplifier Buffer

Disable Disable

Vref Reference

CAZN CAZP GNDA Din Din VCCA CLD Disable

Level ECL

Detect Buffer Figure 2. 16–Lead Pinout

Vset LOS (Top View)

Figure 1. MC10SX1126 Block Diagram

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

REV 0.1 Motorola, Inc. 1998