Title :
A 400-MHz DA converter with a 4-bit color map for 2000-line display
Author :
Watanabe, Tomoyuki ; Maio, Kenji ; Norisue, Katsuhiro ; Hayashi, Shin´ichi ; Ueda, Seiichi
Author_Institution :
Hitachi Ltd., Tokyo, Japan
Abstract :
A video digital-to-analog (DA) converter with a color map is discussed that is monolithic, bipolar, and achieves ultrahigh speed. When the chip is addressed with 4-bit video data, 256-step color-map data can be used in an extremely high-definition 2000-pixel*2000-pixel display. A combination of two emitter-coupled logic (ECL) RAMs and a data-multiplex DA converter is used. The conversion rate is 400 MHz, the settling time of the DA converter is 2 ns, the rise and fall times are both 0.8 ns, and the power consumption is 1.3 W.<>
Keywords :
bipolar integrated circuits; digital-analogue conversion; display instrumentation; video signals; 1.3 W; 2000 pixel; 2000-line display; 4*10/sup 6/ pixel; 4-bit color map; 400 MHz; D/A convertor; ECL RAM; bipolar IC; data-multiplex DA converter; emitter-coupled logic; fall times; high definition display; monolithic type; rise time; settling time; ultrahigh speed; video DAC; Circuits; Color; Computer displays; Decoding; Digital images; Energy consumption; Image converters; Laboratories; Latches; Timing;
Journal_Title :
Solid-State Circuits, IEEE Journal of
