SLVS142 - DECEMBER 1996
The TLS1255 is a wide-band video preamplifier system intended for high-resolution red-green-blue (RGB) color monitors with color-saturation control features. The saturation of a color refers to the degree of chroma or purity, or the degree of freedom from admixture with white. In addition to the RGB preamplifier function, the TLS1255 provides color-saturation control and gain control at the video system outputs. Each video amplifier (R, G, and B) contains a gain set for adjusting maximum system gain (AV = 6 dB). The TLS1255 provides a digital level-operated contrast, brightness, color, and gain adjustment. The video-output stages from TLS1255 directly drive CRT power amplifiers.
The system has been designed to operate from a 12-V supply with all digital level controls operating over a 0-V to 4-V range to make the interface to serial digital buses possible. The TLS1255 also contains a blanking circuit that clamps the video output voltage to within 0.2 V of ground. The mixer circuit required for the OSD application is also integrated into the TLS1255, which makes the design of video boards and other applications easier.
The TLS1255 is characterized for operation from 0°C to 70°C.
View more information about generic part numbers:TLS1255
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