RGBDAC3408

The RGBDAC3408 is a kind of hybrid digital-to-analog converter. It provides 3 channels of video output for RGB-type video displays with picture elements (pixel) rates to 40 MHz. The RGB DAC contains 3 video DACs and 3 RAM arrays (256*4). The RGBDAC3048 provides 4 bits of resolution or 16 levels of "gray space" per channel which gives the user a 212 or 4096 color palette. 

There are some RGBDAC3408 features as follows: (1)low power CMOS circuitry; (2)4096 color palette; (3)3 video DACs; (4)3 RAMs (256*4) for color map; (5)update rates to 40 MHz; (6)composite blanking signals; (7)TTL/CMOS compatible inputs; (8)75 ohm RGB outputs; (9)clean outputs (de-glitching not required); (10)single 5 V supply operation; (11)small size-28 pin DIP.

The following is about the RGBDAC3408 specifications of analog outputs (each channel): (1)voltage range (±5%): 0 to 6.0 V; (2)current: 16 mA; (3)impedance (±5%): 75; (4)compliance: ±1.5 V. Then is about the power requirements: (1)voltage: +4.5 to +5.5 V; (2)current: 225 mA typ and 320 mA max; (3)ambient temperature: 0 to +70.

What comes next is about the RGBDAC3408 dynamic characteristics (each RAM): (1)write pulse width (Tww) (min): 20 ns; (2)address before write pulse (Tsa) (min): 0 ns; (3)data setup time (Tsd): 20 ns; (4)CS setup time (Tsb): 20 ns; (5)address hold time (Tha): 0 ns; (6)data hold time (Tha): 0 ns; (7)chip select hold time (Thb): 0 ns; (8)address access time (Taa) (max): 25 ns; (9)chip select access time (Tab) (with valid address): 20 ns.