The MAX4986 evaluation kit (EV kit) provides a proven design to evaluate the MAX4986 SAS/SATA 2:1/1:2 multiplexer/demultiplexer. The EV kit contains four sections: an application circuit, characterization circuit, and two sets of calibration traces.
The application circuit is designed to demonstrate the MAX4986 in multiplexing and equalizing SAS/SATA signals. This section of the EV kit operates from an external +5V supply that is regulated by an on-board LDO to +3.3V, which powers the MAX4986 (U1). All traces in the application circuit are 100Ω differential controlled-impedance traces.
The characterization circuit is provided for eye diagram evaluation using SMA connectors and 50Ω controlled-impedance traces. This section is powered by an external +3.3V power supply.
For information on the specifications for SATA interfaces, refer to documents defined by the 2.6 release from the Serial ATA industry work group (
www.serialata.org), or if superceded, by the most recently released document from the ATA ANSI work group (
www.t13.org).
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