19-5944 Rev 0 6/11 MAX4951C Evaluation Kit Evaluates: MAX4951C General Description Features The MAX4951C evaluation kit (EV kit) provides a proven S Application Circuit with SATA Input/Output design to evaluate the MAX4951C dual-channel buffer. S Eye Diagram Test Circuit with SMA Inputs/Outputs The EV kit contains four sections: an application circuit, S Calibration Traces (50I Load Trace and characterization circuit, and two sets of calibration traces. Through Trace) The application circuit is designed to demonstrate the S Proven PCB Layout devices use in redriving serial-ATA (SATA) signals and SATA cable detection. This section of the EV kit operates S Fully Assembled and Tested from an external +5V supply that is regulated by an on- board LDO to +3.3V, which powers the device. All traces in the application circuit are 100 differential controlled- impedance traces. Ordering Information appears at end of data sheet. The characterization circuit is provided for eye diagram evaluation using SMA connectors and 50I controlled- impedance traces. This section is powered by an external +3.3V power supply. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION JU4 1 2-pin header, 0.1in center 0.01FF Q10%, 25V X7R ceramic C1C8, JU6 0 Not installed, 3-pin header capacitors (0402) C14C17, 16 Murata GRM155R71E103KA Edge-mount receptacle SMA C22C25 P1P10 10 TDK C1005X7R1E103K connectors R1 1 200I Q5% resistor (0603) 1FF Q10%, 16V X7R ceramic R2, R3 2 49.9I Q1% resistors (0603) C9, C18, C26, capacitors (0603) 4 C27 Murata GRM188R71C105K R4, R5, R6 0 Not installed, resistors (0603) TDK C1608X7R1C105K R7, R8 0 Not installed, resistors (0402) SATA/eSATA bidirectional 0.1FF Q10%, 16V X7R ceramic U1, U2 2 redrivers (20 TQFN-EP) C10C13, C19, capacitors (0402) 7 Maxim MAX4951CCTP+ C20, C21 Murata GRM155R71C104K TDK C1005X7R1C104K 3.3V LDO linear regulator U3 (6 SOT23) 4.7FF Q10%, 10V X7R ceramic 1 Maxim MAX6329TPUT-T+ C28 1 capacitor (0805) (Top Mark: AAIP) Murata GRM21BR71A475K D1 1 Green LED (0603) 8 Shunts H1 1 Disk-drive power connector PCB: MAX4951C EVALUATION 1 KIT 7-position SATA vertical J1, J2 2 connectors JU1, JU2, JU3, JU5, JU7, JU8, 7 3-pin headers, 0.1in centers JU9 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.MAX4951C Evaluation Kit Evaluates: MAX4951C Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX4951C when contacting these component suppliers. Table 1. Default Shunt Positions Quick Start (Application Circuit) JUMPER SHUNT POSITION Recommended Equipment JU1, JU5 1-2 MAX4951C EV kit JU2, JU3, JU7, JU8, JU9 2-3 +5V power supply JU4 Installed Two SATA cables SATA device (e.g., a hard drive) Table 2. Jumper JU4 Function SATA host (e.g., a PC) SHUNT VCC PIN (U1) DESCRIPTION Procedure POSITION The EV kit is fully assembled and tested. Follow the steps Connected to the below to verify board operation: U1 powered by the LDO on-board LDO Installed* linear regulator output 1) Verify that all jumpers are in their default position, as linear regulator (+3.3V) shown in Table 1. output 2) Connect the first SATA cable from the PC to the host Powered by +3.3V from connector (J1) on the EV kit. Not Connected to an an external supply or installed external supply 3) Connect the second SATA cable from the device SATA power connector connector (J2) to the SATA device. *Default position. 4) Verify communication between the host PC and SATA device. Application Circuit (U1) The application circuit provides the means for evaluating Detailed Description of Hardware the device in a SATA application. This section of the EV kit provides two SATA connectors (J1 and J2), one for The MAX4951C EV kit evaluates the MAX4951C dual- connection to a SATA host (e.g., a PC), and the other for channel buffer. The device is designed to redrive SATA connection to a SATA device (e.g., a hard drive). and eSATA signals. The EV kit is divided into four sec- tions: an application circuit, characterization circuit, and Input Supply (VIN) two sets of calibration traces. The application circuit must be powered by +3.3V. There are two ways to get this voltage, either from the on-board The application circuit utilizes 100I differential LDO linear regulator (U3), or directly connected to a controlled-impedance traces and provides two SATA +3.3V power supply. When using the on-board voltage connectors (J1 and J2), allowing for evaluation of the regulator, the LDO can be powered by the 4-pin Molex device in a SATA environment. The characterization connector (H1), or by a +5V external supply connected circuit utilizes 50I controlled-impedance traces and to the VIN and GND PCB pads. When using the on-board SMA input/output connectors, allowing for eye diagrams LDO linear regulator to supply power, there is a power and input/output return-loss measurements. LED (D1) to indicate the presence of +3.3V at VCC. The lower half of the EV kit provides two sets of calibra- The user can also connect directly to a +3.3V supply, tion traces, all of which are matched to the trace lengths which is available on a SATA power connector. The in the characterization circuit. These traces provide a shunt should be removed from jumper JU4 and a wire reference for determining the performance of the device connected from the SATA power pin to pin 2 (right-most only when evaluated in the characterization circuit. pin) of jumper JU4 (see Table 2). The device has a cable-detect feature (CAD). Maxim Integrated Products 2