MAX9511

19-3669; Rev 0; 4/05 Complete VGA Interface with EMI Suppression General Description www.datasheet4u.com Features o RGB Drivers with Adjustable Slew Rate for EMI Control o H Sync and V Sync Drivers with Level Translation o Bidirectional Level Translators for DDC Support o Simultaneously Drives External Monitor/Projector and Docking Station without Analog RGB Switches—No Stub Reflections o Eliminates Up to 34 External Components o Small 24-Pin QSOP Package MAX9511 The MAX9511 is a complete solution to interface a video graphics controller to a VGA port and/or docking station with optimal video performance and minimal electromagnetic interference (EMI) emission. The MAX9511 has output drivers with variable EMI suppression for graphics video and sync (RGBHV) signals. The MAX9511 includes external load-detection circuitry. The MAX9511 suppresses EMI emissions by limiting the slew rate (SR) rather than limiting bandwidth with fixed L-C filters. The SR controls the large-signal bandwidth without affecting the small-signal bandwidth, resulting in sharper video images, while reducing EMI. The SR of the MAX9511 provides tighter control than traditional passive L-C components, and allows the SR to track the resolution by varying an external resistor (RRX) rather than being fixed to a sub-optimal value. The load-detection circuitry of the MAX9511 automatically detects and transmits a change in load status to the input stages when an external load (monitor, docking station, or proje...