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LM1237 データシート(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 LM1237
部品情報  150 MHz I2C Compatible RGB Preamplifier with Internal 254 Character OSD and 4 DACs
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1237 データシート(HTML) 7 Page - National Semiconductor (TI)

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Typical Performance Characteristics V
CC =5V, TA = 25˚C unless otherwise specified (Continued)
Figure 4 and Figure 5 show the case where the horizontal and vertical inputs are from deflection. Figure 4 shows the pin 24
voltage which is derived from a horizontal flyback pulse of 35 volts peak to peak with R
H = 8.2K and C17 jumpered. Figure 5
shows the pin 1 voltage which is derived from a vertical flyback pulse of 55 volts peak to peak with C
4 = 1500pF and RV = 120K.
Figure 6 shows the pin 23 clamp input voltage superimposed on the neck board clamp logic input pulse. R
31 = 1K and should be
chosen to limit the pin 23 voltage to about 2.5V peak to peak. This corresponds to the application circuit given in Figure 9.
Cathode Response
Figure 7 shows the response at the red cathode for the application circuit in Figures 9, 10. The input video risetime is 1.5
nanoseconds. The resulting leading edge has a 7.1 nanosecond risetime and a 7.6% overshoot, while the trailing edge has a 7.1
nanosecond risetime and a 6.9% overshoot with an LM2467 driver.
20023456
FIGURE 4. Deflection Horizonal Blanking
20023457
FIGURE 5. Deflection Vertical Blanking
20023458
FIGURE 6. Logic Clamp Pulse
20023459
FIGURE 7. Red Cathode Response
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同様の説明 - LM1237

メーカー部品番号データシート部品情報
logo
National Semiconductor ...
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