MAX3787 19-0406 Rev 2 2/08 1Gbps to 12.5Gbps Passive Equalizer for Backplanes and Cables General Description Features The MAX3787 is a 1Gbps to 12.5Gbps equalization No Power Supply Required network that compensates for transmission medium loss- Small 1.5mm x 1.5mm Chip-Scale Package es encountered with FR4 and cables. The equalization Passive Equalization Reduces ISI network is composed entirely of passive components and functions equally well for 8b/10b or scrambled sig- Operates from 1Gbps to 12.5Gbps nals. It is packaged in a small 1.5mm x 1.5mm chip- Extends Board Link scale package (UCSP) that can be placed anywhere along the transmission medium to increase jitter margin Extends Cable Link for high-speed interconnects. Roughly the size of two Coding Independent, 8b/10b or Scrambled 0603 components, the MAX3787 easily provides place- ment and routing flexibility. Ordering Information At 8.5Gbps, the MAX3787 compensates for spans up to 18in of FR4 and 7m of cable. At 12.5Gbps, the MAX3787 PIN- PKG PART TEMP RANGE compensates for spans up to 12in of FR4 and 3m of PACKAGE CODE cable. Input and output impedance is 100 differential. MAX3787ABL -40C to +125C 4 UCSP B9-7 The MAX3787 requires no power and operates over a MAX3787AWL+ -40C to +125C 4 WLP W91B1+3 -40C to +125C temperature range. +Denotes a lead-free package. Applications Pin Configuration Backplane Interconnect Compensation TOP VIEW 1 2 3 Cable Interconnect Compensation Chip-to-Chip Link Extensions A OUT+ Ethernet and Fibre-Channel Serial Modules IN+ Chassis Life Extension B MAX3787 C IN- OUT- UCSP is a trademark of Maxim Integrated Products, Inc. UCSP/WLP Typical Application Circuits SWITCH CARD LINE CARD ALL PASSIVE BACKPLANE INTERCONNECT 100 FR4 IN+ OUT+ (100) Tx Rx (100) MAX3787 IN- OUT- 100 FR4 OUT+ IN+ (100) (100) Rx Tx MAX3787 OUT- IN- Typical Application Circuits continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE1Gbps to 12.5Gbps Passive Equalizer for Backplanes and Cables ABSOLUTE MAXIMUM RATINGS Voltage between (IN+ and OUT+) or (IN- and OUT-)..............+2V Continuous Power Dissipation (T = +70C) A Voltage between (IN+ and IN-) or (OUT+ and OUT-)..............+4V 4-Bump UCSP (derate 3.0mW/C above +70C).........238mW Voltage between (IN+ and OUT-) or (IN- and OUT+)..............+4V Operating Junction Temperature........................................+150C Storage Ambient Temperature Range .................-55C to +150C 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. OPERATING CONDITIONS PARAMETER SYMB O L CONDITIONS MINTYPMAXUNITS Operating Ambient Temperature T -40 +25 +125 C A Bit Rate NRZ data 1 12.5 Gbps CID Tolerance Consecutive identical digits 100 Bits ELECTRICAL CHARACTERISTICS (Specifications guaranteed over specified operating conditions. Typical values measured at T = +25C.) A PARAMETER SYMB O L CONDITIONS MINTYPMAXUNITS Supply Current 0.0 mA Input Swing Measured differentially at point A in Figure 1 3600 mV P-P Compensation 5GHz relative to 100MHz 6 dB Input Impedance Differential, Z = 100 100 LOAD Output Impedance Differential, Z = 100 100 SOURCE Through Response Relative to ideal load, see Figure 2 for setup See Figure 3 for limits Input Return Loss 100MHz to 6GHz 15 dB Output Return Loss 100MHz to 6GHz 15 dB Resistance IN+ to IN- and OUT+ No load, high impedance on all ports 112 152 to OUT- Resistance IN+ to OUT+ and No load, high impedance on all ports 32 44 IN- to OUT- Resistance IN+ to OUT- and No load, high impedance on all ports 112 152 IN- to OUT+ DC Gain (OUT/IN) Z = 100 0.5 LOAD 3.125Gbps and 6.25Gbps, 18in of 6mil 0.05 microstrip FR4 Residual Deterministic Jitter UI (Table 1, Notes 1, 2) 8.5Gbps, 10.0Gbps, and 12.5Gbps, 0.10 18in of 6mil microstrip FR4 Note 1: Signal applied differentially at point A as shown in Figure 1. The deterministic jitter at point B is from media-induced loss, not from clock-source modulation. Deterministic jitter is measured at the 50% vertical level of the signal at point C. 7 Note 2: Difference in deterministic jitter between reference points A and C in Figure 1. Stress pattern: 2 PRBS, 100 zeros, 1, 0, 1, 0, 27 PRBS, 100 ones, 0, 1, 0, 1. 2 MAX3787