MAX14950A Single-Lane PCIe Equalizer/Redriver General Description Benefits and Features The MAX14950A dual equalizer/redriver improves PCI S Innovative Design Eliminates Need for Costly Express (PCIe) signal integrity by providing program- External Components mable input equalization. This feature reduces deter- Single +3.3V Supply Operation ministic jitter and redrives circuitry to reestablish deem- S Increased Design Flexibility for Backward- phasis, which compensates for circuit-board loss at high Compatible Applications frequencies. The device permits optimal placement of Optimized for PCIe Gen III (8GT/s) and key PCIe components and allows for longer runs of strip- Gen II (5GT/s) Signals and Compatible with line, microstrip, or cable. Gen I (2.5GT/s) Signals The device contains two identical channels capable S High Level of Integration for Performance of equalizing PCIe Gen III (8GT/s), Gen II (5GT/s), and Random Jitter: 0.5ps , Deterministic RMS Gen I (2.5GT/s) signals and features electrical idle and Jitter: 7ps p-p receiver detection. Four-Level-Programmable Input Equalization The MAX14950A is available in a small, 40-pin, 5.0mm Eight-Level-Programmable Output Emphasis x 5.0mm TQFN package with flow-through traces for Electrical Idle Detection optimal layout and minimal space requirements. It is Receiver Detection Permits Completely specified over the 0NC to +70NC commercial operating Transparent Operation temperature range. S Ideal for Space-Sensitive Applications On-Chip 50I Input/Output Terminations Applications 40-Pin, 5.0mm x 5.0mm TQFN Packaging Servers Ordering Information appears at end of data sheet. Test Equipment External Graphics Applications For related parts and recommended products to use with this part, Communications Switchers refer to www.maximintegrated.com/MAX14950A.related. Storage Area Networks Typical Operating Circuit MAIN BOARD REMOTE BOARD MIDPLANE Tx SINGLE DIFFERENTIAL PAIR Rx MAX14950A PCIe PCIe Rx SINGLE DIFFERENTIAL PAIR Tx CONNECTORS PCI Express is a registered service mark of PCI-SIG Corporation. For pricing, delivery, and ordering information, please contact Maxim Direct at 19-5965 Rev 1 4/13 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.MAX14950A Single-Lane PCIe Equalizer/Redriver ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) Continuous Power Dissipation (T = +70NC) A V .......................................................................-0.3V to +4.0V TQFN (derate 35.7mW/NC above +70NC)..................2857mW CC All Other Pins (Note 1) ............................. -0.3V to (V + 0.3V) Operating Temperature Range ............................. 0NC to +70NC CC Continuous Current IN P, IN M, Junction Temperature Range ........................... -40NC to +150NC OUT P, OUT M ...........................................................Q30mA Storage Temperature Range ............................ -65NC to +150NC Peak Current IN P, IN M, OUT P, OUT M Lead Temperature (soldering, 10s) ................................+300NC (pulsed for 1Fs, 1% duty cycle) ................................Q100mA Soldering Temperature (reflow) ......................................+260NC Note 1: All I/O pins are clamped by internal diodes. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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. PACKAGE THERMAL CHARACTERISTICS (Note 2) TQFN Junction-to-Ambient Thermal Resistance (B ) ......... 28NC/W JA Junction-to-Case Thermal Resistance (B ) .................2NC/W JC Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V, C = 200nF coupling capacitor on each output, R = 50I on each output, T = 0NC to +70NC, unless oth- CC CL L A erwise noted. Typical values are at V = +3.3V and T = +25NC.) (Note 3) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE Power-Supply Range V 3.0 3.3 3.6 V CC OEQ 2 = OEQ 1 = OEQ 0 102 135 = GND OEQ 2 = OEQ 1 = GND, 106 140 OEQ 0 = V CC OEQ 2 = OEQ 0 = GND, 107 140 OEQ 1 = V CC OEQ 2 = GND, OEQ 1 = 125 160 OEQ 0 = V CC Supply Current I EN = V mA CC CC OEQ 2 = V , OEQ 1 = CC 106 140 OEQ 0 = GND OEQ 2 = OEQ 0 = V , CC 132 170 OEQ 1 = GND OEQ 2 = OEQ 1 = V , CC 140 180 OEQ 0 = GND OEQ 2 = OEQ 1 = OEQ 0 165 210 = V CC Maxim Integrated 2