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LMT LM – Monolithic Triple NS CRT Driver, Package: to , Pin Nb=9. The is an integrated high voltage CRT driver circuit designed for use in. Download National Semiconductor Corporation LMT pdf datasheet file. LMT Datasheet PDF Download – Monolithic Triple ns CRT Driver, LMT data sheet.

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This board provides a good. The NSC demo board also has a position open to add a resistor in parallel with L1. The NSC demo board also. The following references are recommended: Using vari- able resistors for R1 and the parallel resistor will simplify finding the values needed for optimum performance in a dqtasheet application.

This resistor can be used to help control overshoot. This board provides a good example of a layout that can be used as a guide for future layouts. Per- formance is ideal for x resolution displays with pixel clock frequencies up to 75 MHz. Figure 6 shows the maximum power dissipation lm2493t the. V CC clamp diodes. The diode placement and routing is very important for minimizing the voltage 5 www.

The cath- ode of D15 is connected to V CC very close to decoupling ca- pacitor C55 see Figure 12 which is connected to the same section of the ground plane as D Once the optimum values are determined the variable resistors can datasjeet replaced with fixed values.


This demonstrates the importance of knowing the load capacitance in the application. Semiconductor Application Note Increasing the value of L1 will speed up the circuit dahasheet well as increase overshoot. Schematic and Connection Diagrams. This graph gives the designer the information. LM vs Frequency when all three channels of the device. Figure 12 lm2439r the routing and component placement from pin 1 of the LM to the blue cathode.

Also, the length of the signal traces from the preamplifier to the LM and from the LM to the CRT cathode should be as short as pos- sible.

Figure 4 shows the performance of the LM in the test. Ferrite core inductors from J.

LMT datasheet, Pinout ,application circuits Monolithic Triple Ns CRT Driver [Obsolete]

For optimum performance, an adequate ground plane, isola. Note also that D14, D15, R29 and D13 are placed to minimize the size of the video nodes that they are attached to. The anode of protection diode D14 is con. This minimizes parasitic capacitance in the video path and also enhances the effectiveness of the pro- tection diodes. Because of its high small signal bandwidth, the part may os.


Datasyeet the values of R1.

Monolithic Triple 9.5 Ns CRT Driver [Obsolete]

To prevent this, leads to the. Used in conjunction with an LM, a complete video chan.

The rise time shows a maximum variation relative to the cen. Referring lm24439t Figure 9there are three components R1, R2. This is done to minimize the length of the video path between these two components.

It is very important to use induc. This example assumes a capacitive load of 8 pF and no re. MHz bandwidth then a maximum heat sink thermal resis. A typical application of the LM is shown in Figure The val- ues shown in Figure 9 can be used as a good starting point for the evaluation of the LM Once the optimum values are determined. This corresponds to a speed degrada- tion of 0. The designer should note that if the load capacitance.

Figure 10 is the sche. Figure 7 shows the variation in rise and fall times when the. Also, the length of the.