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ONET4291PA

SLLS671 – SEPTEMBER 2005

1-Gbps to 4.25-Gbps Rate-Selectable Limiting Amplifier

•

CML Data Outputs With On-Chip, 50-

Ω

•

Multirate Operation from 1 Gbps up to

4.25 Gbps

•

Single 3.3-V Supply

•

Loss-of-Signal Detection (LOS)

•

Surface-Mount, Small-Footprint, 4-mm

×

4-mm, 16-Terminal QFN Package

•

Two-Wire Digital Interface

•

Digitally Selectable LOS Threshold

•

Digitally Selectable Bandwidth

•

Multirate SONET/SDH Transmission Systems

•

Digitally Selectable Output Voltage

•

4.25-Gbps, 2.125-Gbps, and 1.0625-Gbps

•

Low Power Consumption

Fibre-Channel Receivers

•

Input Offset Cancellation

•

Gigabit Ethernet Receivers

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

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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.