LVDS Chip Supports A Range of Screen Resolutions

Computech isn't the only big show this week, we also have the Society for Information Display (SID ) symposium in full swing in San Jose CA USA at this very minute. We'll try to keep you posted on the interesting stuff going on at that conference as well as Computech. National Semiconductor just introduced an integrated LVDS transmitter with scalar for TFT LCD flat panels in notebooks, and other devices. The DS90C2501 works alongside Intel's integrated Graphics Memory Controller Hub (GMCH) series chipsets, transmitting high-bandwidth pixel data between both the host and display. The DS90C2501 is based on National's LVDS (low voltage differential signaling) technology. LVDS uses differential transmission to reduce electromagnetic interference (EMI), while maintaining a throughput of 5.38 GB per second. The DS90C2501 is a programmable transmitter that uses a 345mV swing to reduce noise levels and a scaling feature that lets users of notebook and other LCD panels use various graphics formats on a fixed-resolution LCD panel. The chip is designed to sit between the GUI display controller on the host and the LVDS receiver on the LCD. Supported resolutions include VGA (640 x 480), SVGA (800 x 600), XGA (1024 x 768), SXGA (1280 x 1024), SXGA+ (1400 x 1050), and UXGA (1600 x 1200). The DS90C2501SLB in a 128-lead CSP package will be available in Q3 2001 is for $10 each in quantities of 1,000. For applications that need the same performance without the scaling capability, NSC says it will be offering the DS90C389R in mid-June for $6.00 in quantities of 1,000.