MAX3804 19-2713 Rev 1 11/03 12.5Gbps Settable Receive Equalizer General Description Features The MAX3804 driver with integrated analog equalizer Compensates Up to 30in (0.75m) of 6-mil FR-4 compensates up to 20dB of loss at 5GHz. It is designed Transmission Line Loss to ensure PC board signal integrity up to 12.5Gbps, 115mW Operating Power where frequency-dependent skin effect and dielectric losses typically produce unacceptable amounts of inter- Up to 12.5Gbps Data Rate symbol interference. The MAX3804 can extend the practi- Compatible with 8B10B, 64B66B, and PRBS Data cal chip-to-chip transmission distance for 10Gbps NRZ serial data up to 30in (0.75m) on FR-4, and it significantly Less than 30ps Residual Jitter After P-P decreases deterministic jitter. Residual jitter after equal- Equalization ization for 10.7Gbps signals is typically 24ps on the P-P 3-Bit Equalization Level Select Input maximum path length. The MAX3804 is ideal for 10Gbps chip-to-chip serial 3mm x 3mm Thin QFN Package interconnections on inexpensive FR-4 material. Its DC-Coupling to 1.8V, 2.5V, or 3.3V CML I/O 3mm 3mm package affords optimal placement and routing flexibility. It has separate V connections for CC -40C to +85C Operation internal logic and current-mode logic (CML) I/O. This +3.3V Core Supply Voltage allows the CML input and output to be referenced to iso- lated supplies, providing independent DC-coupled inter- facing to 1.8V, 2.5V, or 3.3V ICs. Eight discrete levels of input equalization can be selected through a digital con- trol input, enabling the equalizer to be matched to a range of transmission line path loss. When correctly set to Ordering Information match the path loss, the MAX3804 provides optimal per- formance over a wide range of data rates and formats. PIN- PACKAGE PART TEMP RANGE PACKAGE CODE 16 Thin QFN MAX3804ETE -40C to +85C T1633F-3 (3mm x 3mm) Applications OC-192 and 10Gb Ethernet Switches and Routers Pin Configuration appears at end of data sheet. OC-192 and 10Gb Ethernet Serial Modules High-Speed Signal Distribution Typical Operating Circuit +1.8V +2.5V +3.3V V CC V CC 10Gbps V V V CC1 CC CC2 30in OF FR-4 STRIPLINE OR SERDES 10Gbps MICROSTRIP TRANSMISSION LINE SERIAL OPTICAL MAX3804 MODULE SDO+ SDI+ SDO+ SDI+ IN SDO- SDI- SDO- SDI- EQ1 EQ2 EQ3 GND +3.3V 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 AVAILABLE12.5Gbps Settable Receive Equalizer ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) ............................................-0.5V to +4.0V Continuous Power Dissipation (T = +85C) CC A CML Supply Voltage (V , V ) ............-0.5V to (V + 0.5V) 16-Lead Thin QFN-EP (derate 17.5mW/C CC1 CC2 CC Current at Serial Output (SDO+, SDO-) ............................25mA above +85C) ........................................................1398mW Input Voltage (SDI+, SDI-, EQ1, Operating Temperature Range ...........................-40C to +85C EQ2, EQ3) ..............................................-0.5V to (V + 0.5V) Storage Temperature Range .............................-55C to +150C CC Lead Temperature (soldering, 10s) .................................+300C 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, V = V = +1.65V to +3.6V, T = -40C to +85C. Typical values are at V = V = V = +3.3V, CC CC1 CC2 A CC CC1 CC2 and T = +25C, unless otherwise noted.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Current I 35 50 mA CC CML Input Differential V AC-coupled or DC-coupled (Note 1) 400 1200 mV IN P-P V V CC1 CC1 CML Input Common Mode DC-coupled V - 0.4 + 0.1 CML Input Termination Single ended 42.5 50 57.5 CML Input Return Loss Up to 5GHz 10 dB CML Output Differential V 400 500 600 mV OUT P-P CML Output Impedance Single ended 42.5 50 57.5 CML Output Transition Time t , t 20% to 80% (Notes 2, 6) 35 ps R F At 10.7Gbps (Notes 3, 4, 5, 6) 24 30 Residual Jitter Output ps P-P (Total RJ, PWD, and PDJ) At 12.5Gbps (Notes 3, 4, 5, 6) 17 30 LVTTL Input Current I , I -30 +30 A IH IL LVTTL Input Low V 0.8 V IL LVTTL Input High V 2.0 V IH Note 1: Differential Input Sensitivity is defined at the input to a transmission line. The transmission line is differential Z = 100 , 6-mil 0 microstrip in FR-4, = 4.5, and tan = 0.02, V = (SDI+ - SDI-). r IN Note 2: Measured with 0000011111 pattern at 12.5Gbps. Note 3: Residual jitter is the difference in total jitter (RJ, PWD, and PDJ) between the transmitted signal (at the input to the transmis- sion line) and equalizer output. Total residual jitter is DJ + 14.2 x RJ . P-P RMS 7 7 Note 4: Measured at 10.7Gbps using a pattern of 100 ones, 2 PRBS, 100 zeros, 2 PRBS, and at 12.5Gbps using a K28.5 pattern. Deterministic jitter at the input is from frequency-dependent, media-induced loss only. Note 5: V = 400mV to 1200mV , input path is 0 to 30in, 6-mil microstrip in FR-4, = 4.5, and tan = 0.02. IN P-P P-P r Note 6: Guaranteed by design and characterization. 2 MAX3804