LM1203N National Semiconductor, LM1203N Datasheet
LM1203N
Specifications of LM1203N
LM1203
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LM1203N Summary of contents
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... Three externally gated comparators for brightness con- Y trol Provisions for independent gain control (Drive) of each video amplifier Video input voltage reference Y Low impedance output driver Y FIGURE 1 Order Number LM1203N See NS Package Number NA28F RRD-B30M56 Printed January 1996 3dB 2%) attenuators for TL H 9178 – 1 ...
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... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage V Pins (Note 1) Voltage at Any Input Pin V IN Video Output Current I16 Power Dissipation P D (Above 25 C) Derate Based on ...
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AC Dynamic Tests S17 21 26 Closed V14 Symbol Parameter Vsep Video Amplifier 10 kHz Isolation 10 kHz Vsep Video Amplifier 10 MHz Isolation 10 MHz Note 1 V supply pins must be externally wired together ...
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Typical Performance Characteristics Contrast vs Frequency Frequency Response Using Various Peaking Caps http www national com Crosstalk vs Frequency TL H 9178–11 Attenuation vs Contrast Voltage TL H 9178–13 Pulse Response Rise Vert Horiz – – GND TL H 9178 ...
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FIGURE 3 LM1203 Typical Application 30 resistors are added to the input pins for protection against current surges coming through the 10 F input capacitors By increasing these resistors to well over 100 the rise and fall times of the ...
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Applications Information Figure 4 shows the block diagram of a typical analog RGB color monitor The RGB monitor is used with CAD CAM work stations PC’s arcade games and in a wide range of other applications that benefit from the ...
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Circuit Description Figure block diagram of one of the video amplifiers along with the contrast and brightness controls The con- trast control is a dc-operated attenuator which varies the ac gain of all three amplifiers simultaneously while ...
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Circuit Description (Continued) http www national com 8 ...
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Circuit Description (Continued) The ‘‘Drive’’ pin will allow the user to trim the Q9 gain of each amplifier to correct for differences in the CRT and high voltage cathode driver gain stages A small capacitor (33 pF) at this pin ...
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Circuit Description (Continued) Figure 7 also shows how the contrast control circuit is con- figured Resistors R23 24 diodes D3 4 and transistor Q13 are used to establish a low impedance zero TC half supply voltage reference at the base ...
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Additional Applications of the LM1203 Figure 9 shows how the LM1203 can be set video buffer which could be used in low cost video switcher appli- cations Pin 14 is tied high to turn off the clamp ...
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Additional Applications of the LM1203 When diode D4 at Pin 11 is switched to ground the input video signals will be DC shifted down and clamped at a voltage near ground (approximately 250 mV) This will dis- able the video ...
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FIGURE 11 LM1203 LM1881 Application Circuit for PC Board 9178 – 16 http www national com ...
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http www national com 14 ...
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15 http www national com ...
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... Italiano National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Order Number LM1203N NS Package Number NA28F 2 A critical component is any component of a life ...