描述 Description

The ONET4291PA is a versatile, high-speed, rate-selectable limiting amplifier for multiple fiber-optic applications with data rates up to 4.25 Gbps. The device provides a two-wire interface, which allows digital bandwidth selection, digital output amplitude selection, and digital loss of signal threshold adjust. This device provides a gain of about 43 dB, which ensures a fully differential output swing for input signals as low as 5 mVp-p.The ONET4291PA provides loss-of-signal detection with either digital or analog threshold adjust. The part is available in a small-footprint, 4-mm × 4-mm, 16-terminal QFN package. It requires a single 3.3-V supply. This power-efficient, rate-selectable limiting amplifier is characterized for operation from -40°C to 85°C ambient temperature.

特性 Features

? Multirate Operation from 1 Gbps up to 4.25 Gbps
? Loss-of-Signal Detection (LOS)
? Two-Wire Digital Interface
? Digitally Selectable LOS Threshold
? Digitally Selectable Bandwidth
? Digitally Selectable Output Voltage
? Low Power Consumption
? Input Offset Cancellation
? CML Data Outputs With On-Chip, 50- Back-Termination to VCC
? Single 3.3-V Supply
? Surface-Mount, Small-Footprint, 4-mm × 4-mm, 16-Terminal QFN Package
? APPLICATIONS
? Multirate SONET/SDH Transmission Systems
? 4.25-Gbps, 2.125-Gbps, and 1.0625-Gbps Fibre-Channel Receivers
? Gigabit Ethernet Receivers