ONET8501PB
www.ti.com ....................................................................................................................................................................................................... SLLS910–JULY 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 3mm × 3mm
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
2x/4x/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 ONET8501PB 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 ONET8501PB provides a gain of about 34dB which ensures a fully differential output swing for input signals
as low as 20mVp-p. The output amplitude can be adjusted to 350mVpp, 650mVpp, or 850mVpp. 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 device, available in RoHS compliant small footprint 3mm × 3mm 16-pin QFN package, typically dissipates
less than 170 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.