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FEATURES

APPLICATIONS

DESCRIPTION

ONET8501P

SLLS885 – FEBRUARY 2008

www.ti.com

11.3-Gbps RATE-SELECTABLE LIMITING AMPLIFIER

• Up to 11.3-Gbps Operation

• Output Disable

• 2-Wire Digital Interface

• Surface Mount Small Footprint 3 mm × 3 mm

16-Pin RoHS compliant QFN Package

• Digitally Selectable Input Bandwidth

• Adjustable LOS Threshold

• Digitally Selectable Output Voltage

• 10-Gigabit Ethernet Optical Receivers

• Digitally Selectable Output Pre-Emphasis

• 8x and 10x Fiber Channel Optical Receivers

• Adjustable Input Threshold Voltage

• SONET OC-192/SDH-64 Optical Receivers

• Low Power Consumption

• SFP+ and XFP Transceiver Modules

• Input Offset Cancellation

• XENPAK, XPAK, X2 and 300-pin MSA

Transponder Modules

• CML Data Outputs with On-Chip 50-Ω

Back-Termination to VCC

• Cable Driver and Receiver

• Single +3.3-V Supply

The ONET8501P is a high-speed, 3.3-V limiting amplifier for multiple fiber optic and copper cable applications

with data rates from 2 Gbps up to 11.3 Gbps.

The device provides a two-wire serial interface which allows digital control of the bandwidth, output amplitude,

output pre-emphasis, input threshold voltage (slice level) and the loss of signal assert level. Predetermined

settings for bandwidth and LOS assert levels can also be selected with external rate selection pins.

The ONET8501P provides a gain of about 40dB which ensures a fully differential output swing for input signals

as low as 10 mVpp. The output amplitude can be adjusted to 300 mVpp, 600 mVpp, or 900 mVpp. To compensate

for frequency dependent loss of microstrips or striplines connected to the output of the device, programmable

pre-emphasis is included in the output stage. A settable loss of signal detection and output disable are also

provided.

The part, available in RoHS compliant small footprint 3 mm

× 3 mm 16-pin QFN package, typically dissipates

less than 160 mW and is characterized for operation from –40

°C to 100°C.

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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 © 2008, 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.