LM1207AN National Semiconductor, LM1207AN Datasheet
LM1207AN
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LM1207AN Summary of contents
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... PP ± n Matched ( 0 1.2%) attenuators for contrast control Block and Connection Diagram Order Number LM1205AN or LM1207AN, See NS Package Number N28B © 1997 National Semiconductor Corporation DS012866 n ESD susceptibility above Three externally gated single ended input comparators for cutoff and brightness control 4V, high input impedance DC contrast control > ...
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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 ( Pins 3, 11, 22, 23, 25 (Note 3) Peak Video Output Source Current (Any One Amp) Pins 17 Voltage at Any Input Pin ( Power Dissipation (P ...
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AC Electrical Characteristics = 25˚C; V See AC Test Circuit ( Figure for the AC test unless otherwise stated. Symbol Parameter A Video Amplifier Gain V max A Attenuation @ Attenuation ...
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Typical Performance Characteristics Attenuation vs Contrast Voltage www.national.com = 12V 25˚C unless otherwise specified Attenuation vs Drive Voltage DS012866-2 4 DS012866-3 ...
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Typical Performance Characteristics LM1205A Crosstalk vs Frequency LM1205A Contrast vs Frequency LM1205A Drive vs Frequency = 12V 25˚C unless otherwise specified (Continued DS012866-4 DS012866-5 DS012866-6 5 www.national.com ...
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Typical Performance Characteristics LM1207A Crosstalk vs Frequency LM1207A Contrast vs Frequency LM1207A Drive vs Frequency www.national.com = 12V 25˚C unless otherwise specified (Continued DS012866-7 DS012866-8 DS012866-9 6 ...
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... Testing Circuit FIGURE 2. LM1205AN/LM1207AN DC Test Circuit 7 DS012866-10 www.national.com ...
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... Testing Circuit (Continued) FIGURE 3. LM1205AN/LM1207AN AC Test Circuit www.national.com 8 DS012866-11 ...
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... Evaluation Circuit FIGURE 4. LM1205AN/LM1207AN PCB Test Circuit 9 DS012866-12 www.national.com ...
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ESD and Arc-Over Protection The ESD cells of the LM1205A/LM1207A are improved over the original LM1205/LM1207 parts. The monitor designer must still use good PC board layout techniques when de- signing with the LM1205A/LM1207A. The human body model ESD susceptibility ...
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Functional Description Figure detailed block diagram of the green channel of the LM1205A/LM1207A along with the recommended exter- nal components. The IC pin numbers are circled and all ex- ternal components are shown outside the dashed line. ...
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Functional Description FIGURE 6. Block Diagram of LM1205A/LM1207A Video Amplifier FIGURE 7. Timing Diagram Circuit Description VIDEO AMPLIFIER INPUT STAGE Figure simplified schematic of one of the three video amplifiers input stage along with the recommended external ...
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Circuit Description (Continued) and Q7) before setting the voltage across R9. Q2, Q3, and Q4 also provide three diode drops to the bias voltage at the base of Q5, temperature compensating for the diode drops of Q5, Q6, and Q7. ...
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Circuit Description (Continued) CONTRAST CONTROL Figure simplified schematic of the Contrast Control cir- cuit. The output of this circuit is common to all three chan- nels. A reference voltage is generated by Z2, Q34, Q35, R30, and ...
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Circuit Description (Continued) FIGURE 9. Simplified Schematic of LM1205A/LM1207A Contrast Control FIGURE 10. Simplified Schematic of LM1205A/LM1207A Drive Control 15 DS012866-17 DS012866-18 www.national.com ...
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Circuit Description (Continued) CLAMP COMPARATOR CIRCUIT Figure simplified schematic of the clamp comparator circuit. Q85 and its input transistors, Q81 and Q82 are one half of the differential pair. The base of Q81 is connected to pin ...
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Circuit Description (Continued) FIGURE 11. Simplified Schematic of LM1205A/LM1207A Clamp Comparator Circuit CLAMP GATE CIRCUIT Figure simplified schematic of the Clamp Gate circuit. A voltage reference is setup by Z3 and by Q104 and Q105 connected as ...
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Circuit Description (Continued) BLANK GATE CIRCUIT Figure simplified schematic of the Blank Gate circuit. With the exception of the simple output stage and the spot killer circuit, this circuit is almost identical to the clamp gate circuit. ...
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Circuit Description (Continued) FIGURE 13. Simplified Schematic of LM1205A/LM1207A Blank Gate Circuit VIDEO AMPLIFIER OUTPUT STAGE WITH BLANK CIRCUIT Figure simplified schematic of the Video Amplifier Output Stage including the blanking circuit. Q18 serves as a buffer ...
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Circuit Description (Continued) Figure 14 also shows the power and ground pins to the LM1205A/LM1207A. All the V pins (pins 3, 11, 25) are all CC1 internally connected together. A 0.1 µF bypass capacitor must be located close to each ...
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... LM1205A/LM1207A is designed into a video board one must keep the ground to the CRT driver stage separate from the ground of the LM1205A/LM1207A, connecting the two grounds together only at one point. National Semiconductor also manufactures a line of CRT drivers. Please contact Na- tional for additional information. These drivers greatly sim- plify the driver design allowing for shorter design cycles ...
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Applications of the LM1205A/LM1207A www.national.com (Continued) FIGURE 16. Demonstration Board Layout 22 DS012866-24 ...
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Applications of the LM1205A/LM1207A (continued) FIGURE 17. LM1205A Rise Time FIGURE 18. LM1207A Rise Time FIGURE 21. LM1205A/LM1207A Typical Application DS012866-25 FIGURE 19. LM1205A Fall Time DS012866-27 FIGURE 20. LM1207A Fall Time 23 DS012866-26 DS012866-28 DS012866-29 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 LM1205AN or LM1207AN NS Package Number N28B 2. A critical component in any component of a life support ...