• Multirate Operation up to 4.25 Gbps
• Compensates up to 12 dB Loss at 2.1 GHz
• Suitable to Receive 4.25 Gbps Data Over up to 36 Inches (0.91 Meters) of FR4 PC Boards
• Suitable to Receive 4.25 Gbps Data Over up to 30 Feet (9.1 Meters) of CX4 Cable
• Ultralow Power Consumption
• Input Offset Cancellation
• High-Input Dynamic Range
• Output Disable
• Output Polarity Select
• Selectable Loss-of-Signal (LOS) Detection
• Selectable Squelch Function
• CML Data Outputs
• Single 3.3-V Supply
• Surface-Mount, Small-Footprint, 3-mm × 3-mm, 16-Pin QFN Package
• APPLICATIONS
  • 1.0625-Gbps, 2.125-Gbps, and 4.25-Gbps Fibre Channel Systems
  • High-Speed Links in Communication and Data Systems
  • Backplane Interconnect
  • Rack-to-Rack Interconnect

The TLK4201EA is a versatile, high-speed limiting equalizer for applications in digital high-speed links with data rates up to 4.25 Gbps.

This device provides a high-frequency boost of 12 dB at 2.1 GHz as well as sufficient gain to ensure a fully differential output swing for input signals as low as 100 mV_P-P (at the input of the interconnect line or cable).

The high input signal dynamic range ensures low-jitter output signals even when overdriven with input signal swings as high as 2000 mV_P-P.

The TLK4201EA includes fixed loss-of-signal (LOS) detection, which can be used to implement a squelch function by connecting the LOS output to the adjacent DISABLE input. The LOS function can be disabled by pulling LOSDIS to high level.

The TLK4201EA is available in a small-footprint, 3-mm ×; 3-mm, 16-pin QFN package. It requires a single 3.3-V supply.

This very power-efficient equalizer is characterized for operation from -40°C to 85°C.