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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Increasing the values of R1 and R2 will slow the circuit down while decreasing over- shoot. Increasing the values of R1. This example assumes a capacitive load of 8 pF and no re. MHz bandwidth then a maximum heat sink thermal resis. Figure 8 shows the effect of increased load capacitance datashwet. The diode placement and routing is very important for minimizing the voltage 5 www. Figure 6 shows the maximum power dissipation of the LM vs Frequency when all three channels of the device are driving an 8 pF load with a 40 V p-p alternating one pixel on, one pixel off signal.
This demonstrates the importance. The following references are recommended: This corresponds to a speed degrada- tion of 0. The NSC demo board also. The rise time shows a maximum variation relative to the cen. Because of its high small signal bandwidth, the part may os- cillate in a monitor if feedback occurs around the video chan- nel through the chassis wiring. Also, the datasheeet of the.
Increasing the value of L1 will speed up the circuit as. This board provides a good. 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.
This is done to. Used in conjunction with an LM, a complete video chan- nel from monitor input to CRT cathode can be achieved.
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The val- ues shown in Figure 9 can be used as a good starting point for the evaluation of the LM Figure 11 shows routing and component placement on the. The LM case temperature must be maintained below. This corresponds to a speed degrada.
The IC is packaged in an industry standard 9-lead TO molded plastic power package. This demonstrates the importance of knowing the load capacitance in the application. The designer should note that if the load capacitance.
LMT datasheet, Pinout ,application circuits Monolithic Triple Ns CRT Driver [Obsolete]
The schematic of the board is shown in Figure The NSC demo board also has a position open to add a resistor in parallel with L1. Schematic and Connection Diagrams. Figure 6 shows the maximum power dissipation of the.
See Thermal Considerations datasbeet. Once the optimum values are determined. LM vs Frequency when all three channels of the device. Referring to Figure 9there are three components R1, R2. Used in conjunction with an LM, a complete video chan. Semiconductor Application Note This is done to minimize the length of the video path between these two components.
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The fall time shows a. The figure shows that the rise time of the LM increases.
Note that the components are placed so. Very important for arc protection.
National Semiconductor LM Series Datasheets. LMT, LM Datasheet.
Figure 12 shows the. The cath- ode of D15 is datsaheet 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 Note that the components are placed so that they almost line up from the output pin of the LM to the blue cathode pin of the CRT connector.
Note also that D14, D15, R29 and D13 are. For optimum performance, an adequate ground plane, isola. This graph gives the designer the information needed to determine the heat sink requirement for datashete appli- cation. Figure 4 shows the performance of the LM in the test.
A typical application of the LM is shown in Figure This resistor can be used to help control overshoot. Ferrite core inductors from J.
Because of its high small signal bandwidth, the part may os. Figure 7 shows the variation in rise and fall times when the. The designer should note that if the load capacitance is increased the AC component of the total power dissipation will also increase.
Note also that D14, D15, R29 and D13 are placed to minimize the size of the video nodes that they are attached to.