Single Transmitter 32-Pin TQFP EP

The MAX3800 is a +3.3V adaptive cable equalizer and cable driver implemented together on a single chip. It is designed for coaxial and twin-axial cable point-to-point communications applications. The driver features differential current-mode logic (CML) inputs and outputs as well as adjustable output amplitude. The equalizer includes differential CML data inputs and outputs, a loss-of-signal (active-low LOS) output, and a cable integrity monitor (CIM) output. The adaptive cable equalizer is capable of equalizing differential or single-ended signals at data rates up to 3.2Gbps. It automatically adjusts to attenuation caused by skin-effect losses of up to 30dB at 1.6GHz. The equalizer effectively extends the usable length of copper cable in high-frequency interconnect applications. The MAX3800 is available in a 32-pin TQFP package with exposed pad and consumes only 200mW at +3.3V. The driver can be disconnected from the power supply when it is not needed, resulting in a 40% reduction in supply current.

• Single +3.3V Operation
• Typical Power Dissipation = 200mW at +3.3V
• Data Rates Up to 3.2Gbps
• Adjustable Cable Driver Output Amplitude
• Equalizer Automatically Adjusts for Different Cable Lengths
• 0dB to 30dB Equalization at 1.6GHz (3.2Gbps)
• Loss-of-Signal (active-low LOS) Indicator
• Cable Integrity Monitor (CIM)
• On-Chip Input and Output Terminations
• Low External Component Count
• Operating Temperature Range = 0°C to +85°C
• ESD Protection on Cable Inputs and Outputs