lm2409 National Semiconductor Corporation, lm2409 Datasheet
lm2409
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lm2409 Summary of contents
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... LM2409 Monolithic Triple 9.5 ns CRT Driver General Description The LM2409 is an integrated high voltage CRT driver circuit designed for use in color monitor applications. The IC con- tains three high input impedance, wide band amplifiers which directly drive the RGB cathodes of a CRT. Each chan- nel has its gain internally set to − ...
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... AC Test Circuit Note load includes parasitic capacitance. Figure 2 shows a typical test circuit for evaluation of the LM2409. This circuit is designed to allow testing of the LM2409 environment without the use of an expensive FET probe. The 4950 connected load. www.national.com ...
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... Typical Performance Characteristics Test Circuit - Figure 2 unless otherwise specified) DS100838-4 FIGURE OUT IN DS100838-5 FIGURE 4. Speed vs Temperature DS100838-6 FIGURE 5. LM2409 Pulse Response = 80V 12V 8pF 40V ( OUT FIGURE 6. Power Dissipation vs Frequency FIGURE 7. Speed vs Offset FIGURE 8. Speed vs Load Capacitance ...
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... It is designed replacement for discrete CRT drivers. The application circuits shown in this document to optimize performance and to protect against damage from CRT arc- FIGURE 9. One Channel of the LM2409 with the Recommended Arc Protection Circuit www.national.com over are designed specifically for the LM2409. If another member of the LM240X family is used, please refer to its datasheet ...
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... LM2409 to the blue cathode. Note that the components are placed so that they almost line up from the output pin of the LM2409 to the blue cathode pin of the CRT connector. This is done to minimize the length of the video path between these two components ...
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... Application Hints (Continued) stress on the LM2409 during an arc over event. Lastly, notice that S3 is placed very close to the blue cathode and is tied directly to CRT ground. www.national.com 6 ...
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Application Hints (Continued) FIGURE 11. LM1279/240X Demo Board Layout 7 DS100838-14 www.national.com ...
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Application Hints (Continued) FIGURE 12. Trace Routing and Component Placement for Blue Channel Output www.national.com DS100838-15 8 ...
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... 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. NS Package Number TA11B Order Number LM2409T 2. A critical component is any component of a life ...