LM1201N datasheet(4/16 Pages) NSC

4 / 16 page

APPLICATIONS INFORMATION

Figure 4 shows the block diagram of a typical analog mono-

chrome monitor The monitor is used with CADCAM work

stations PCs arcade games and in a wide range of other

applications that benefit from the use of high resolution dis-

play terminals Monitor characteristics may differ in such

ways as sweep rates screen size or in video amplifier

speed but will still be generally configured as shown in

Fig-

ure 4 Separate horizontal and vertical sync signals may be

required or they may be contained as a composite signal in

the video input signal The video input signal is usually

supplied by coaxial cable which is terminated in 75X at the

monitor input and internally AC coupled to the video amplifi-

er The input signal is approximately 1V peak-to-peak in am-

plitude and at the input of the high voltage video section

approximately 6V peak-to-peak At the cathode of the CRT

the video signals can be as high as 60V peak to peak The

block in

Figure 4 labeled ‘‘Video Amplification with DC Con-

trolled GainBlack Level’’ contains the function of the

LM1201 video amplifier system

TLH10006 – 4

FIGURE 4 Typical Monochrome Monitor Block Diagram

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LM1201N Datasheet(PDF) 4 Page - National Semiconductor (TI)