General Description

The VSC7969 is a 3.125Gb/s transimpedance amplifier IC with a built-in limiting amplifier, a signal detect feature and a photocurrent monitor. The VSC7969 does not require any external electrical components in the construction of a high performance optical receiver such as for SONET/SDH applications. The analog output is

a differential signal with a minimum amplitude of 200mVp-p (single-ended). The VSC7969 operates with a sin

gle power supply with a maximum power dissipation of 300mW. A PIN photodiode or APD can be connected

and separately biased to provide optimal performance.

Features

• Integrated TIA and Limiting Amplifier

•Low Power Consumption for SFF Applications

•TO Package-Compatible Layout

•On-Chip Signal Detect

•On-Chip Linear Photocurrent Monitor

•Single 3.3V Supply

•5V Supply Operation via Wirebond Option

•Compatible with PIN or Avalanche Detectors

•Packages: 16-Pin TSSOP, TO-46, Bare Die

Applications

•2.488Gb/s, 3.125Gb/s SONET OC-48/SDH STM-16

•2.125Gb/s Fibre Channel

•2.5Gb/s or 3.125Gb/s Ethernet Applications with 8B/10B Overhead

•SFF Transceivers