MAX3983 19-2928 Rev 1 2/07 Quad Copper-Cable Signal Conditioner General Description Features The MAX3983 is a quad copper-cable signal conditioner Link Features that operates from 2.5Gbps to 3.2Gbps. It provides com- Span 20m with 24AWG, 15m with 28AWG pensation for 4x copper InfiniBand and 10Gbase-CX4 Span 0.5m of FR4 on Each Host Ethernet links, allowing spans of 20m with 24AWG and 1.6W Total Power with 3.3V Supply 15m with 28AWG. The cable driver section provides four Loopback Function selectable preemphasis levels. The input to the cable Cable Driver Features driver compensates for up to 0.5m of FR4 circuit board Selectable Output Preemphasis material. The cable receiver section provides additional FR4 Input Equalization fixed input equalization while offering selectable preem- Signal Detect for Each Channel phasis to drive FR4 circuit boards up to 0.5m. Output Disable The MAX3983 also features signal detection on all eight inputs and internal loopback that allows for diagnostic Cable Receiver Features testing. It is packaged in a 10mm x 10mm, 68-pin QFN Selectable FR4 Output Preemphasis and operates from 0C to +85C. Cable Input Equalization Signal Detect for Each Channel Applications Output Disable 4x InfiniBand (4 x 2.5Gbps) Ordering Information 10Gbase-CX4 Ethernet (4 x 3.125Gbps) PIN- 10G Fibre Channel XAUI (4 x 3.1875Gbps) PART TEMP RANGE PKG CODE PACKAGE 4x Copper-Cable or Backplane Transmission MAX3983UGK 0C to +85C 68 QFN G6800-4 (1Gbps to 3.2Gbps) MAX3983UGK+ 0C to +85C 68 QFN G6800-4 +Denotes lead-free package. Pin Configuration appears at end of data sheet. Typical Application Circuit 4x COPPER CABLE ASSEMBLY 3.3V 0.5m 20m (24AWG) 15m (28AWG) 0.01F 0.01F V 1:4 CC TX IN1 TX OUT1 TX IN2 TX OUT2 TX TX IN3 TX OUT3 TX OUT4 TX IN4 SERDES TO MAX3983 RX OUT1 RX IN1 RX OUT2 RX IN2 RX RX OUT3 RX IN3 RX OUT4 RX IN4 TX PE0 V OR CC TX ENABLE TX PE1 GND RX ENABLE RX PE 3V TO 5.5V 3V TO 5.5V POR TO HOST LOOPBACK C POR 4.7k 4.7k MAX3983 RX SD1 TX SD1 RX SD2 TX SD2 RX SD3 TX SD3 RX SD4 TX SD4 GND TO HOST Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLEQuad Copper-Cable Signal Conditioner ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ..............................................-0.5V to +6.0V Continuous Power Dissipation (T = +85C) CC A Continuous CML Output Current at 68-Pin QFN (derate 41.7mW/C above +85C).2.7W TX OUT 1:4 , RX OUT 1:4 ...........................25mA Operating Junction Temperature Range (T )....-55C to +150C J Voltage at TX IN 1:4 , RX IN 1:4 , RX SD 1:4 , Storage Ambient Temperature Range (T ) .......-55C to +150C S TX SD 1:4 , RX ENABLE, TX ENABLE, RX PE, TX PE 0:1 , LOOPBACK, POR (with series resistor 4.7k)...................-0.5V to (V + 0.5V) CC Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V, T = 0C to +85C. Typical values are at V = +3.3V and T = +25C, unless otherwise noted.) CC A CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS RX EN = V , TX EN = 0V 360 430 CC Supply Current RX EN = 0V, TX EN = V 365 430 mA CC RX EN = V , TX EN = V 495 580 CC CC OPERATING CONDITIONS Supply Voltage V 3.0 3.3 3.6 V CC Supply Noise Tolerance 1MHz f < 2GHz 40 mV P-P Operating Ambient Temperature T 025 85 C A Bit Rate NRZ data (Note 1) 2.5 3.2 Gbps CID Consecutive identical digits (bits) 10 Bits STATUS OUTPUTS: RX SD 1:4 , TX SD 1:4 Signal detect asserted 0 25 A Signal detect unasserted V 0.4V with 4.7k OL 1.0 1.11 mA Signal-Detect Open-Collector pullup resistor Current Sink V = 0V, pullup supply = 5.5V, external pullup CC 025A resistor 4.7k Time from RX IN 1:4 or TX IN 1:4 dropping Signal-Detect Response Time below 85mV or rising above 175mV to 0.35 s P-P P-P 50% point of signal detect Signal-Detect Transition Time Rise time or fall time (10% to 90%) 200 ns Power-On Reset Delay 1F capacitor on POR to GND 6 ms CONTROL INPUTS: RX ENABLE, TX ENABLE, RX PE, TX PE0, TX PE1, LOOPBACK Voltage, Logic High V 1.5 V IH Voltage, Logic Low V 0.5 V IL Current, Logic High I V = V -150 +150 A IH IH CC Current, Logic Low I V = 0V -150 +150 A IL IL 2 MAX3983