RAM-DAC Upgrade Enhances VGA Graphics

AD7148 provides 1280 x 1024 apparent resolution, 792,000 colors, transparently solves longstanding "jaggies" aliasing problem

The AD7141, AD7146, and AD7148 RAM-DACs for video graphics use a unique algorithm to dramatically enhance resolution, color rendition, and line quality of industry-standard VGA display systems. Using the patented Edsun Continuous Edge® Graphics scheme, these CEG/DAC™ monolithic ICs—pin-and register-compatible with standard RAM-DACs (such as the Analog Devices ADV471, ADV476, and ADV478)—contain embedded, dedicated DSP circuitry to implement the user-transparent Continuous Edge algorithm automatically. Read full article



Author

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Bill Schweber