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.

• Up to 11.3-Gbps Operation
• 2-Wire Digital Interface
• Digitally Selectable Input Bandwidth
• Adjustable LOS Threshold
• Digitally Selectable Output Voltage
• Digitally Selectable Output Pre-Emphasis
• Adjustable Input Threshold Voltage
• Low Power Consumption
• Input Offset Cancellation
• CML Data Outputs with On-Chip 50-Ω Back-Termination to VCC
• Single +3.3-V Supply
• Output Disable
• Surface Mount Small Footprint 3mm × 3mm 16-Pin RoHS compliant QFN Package
• APPLICATIONS
  • 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
  • Cable Driver and Receiver