ONET8501P
www.ti.com
SLLS885–FEBRUARY 2008
11.3-Gbps RATE-SELECTABLE LIMITING AMPLIFIER
1
FEATURES
•
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
APPLICATIONS
Digitally Selectable Output Voltage
Digitally Selectable Output Pre-Emphasis
Adjustable Input Threshold Voltage
Low Power Consumption
•
•
•
•
•
10-Gigabit Ethernet Optical Receivers
8x and 10x Fiber Channel Optical Receivers
SONET OC-192/SDH-64 Optical Receivers
SFP+ and XFP Transceiver Modules
XENPAK, XPAK, X2 and 300-pin MSA
Transponder Modules
Input Offset Cancellation
CML Data Outputs with On-Chip 50-Ω
Back-Termination to VCC
•
Cable Driver and Receiver
•
Single +3.3-V Supply
DESCRIPTION
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.
1
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.