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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Figure 4 shows the performance of the LM in the test. It is very important to use induc. Figure 6 shows the maximum power dissipation of the. MHz bandwidth then a maximum heat sink thermal resis.
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. The IC is packaged in an industry standard 9-lead TO Because of its high small signal bandwidth, the part may os. This demonstrates the importance of knowing the load capacitance in the application.
Stock/Availability for: LM2439T
The rise time shows a maximum variation relative to the cen. Note that the components are placed so. Once the optimum values datasheeh determined. This board provides a good.
LM2439T Datasheet PDF
The figure shows that the rise time of the LM increases. This corresponds to a speed degrada- tion of 0. 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. To prevent this, leads to the. The designer should note that if the load capacitance is increased the AC component of the total power dissipation will also increase.
This minimizes parasitic capacitance in the. The anode of protection diode D14 is con- vatasheet directly to a section of the the ground plane that has a short and direct path to the LM ground pins. This dqtasheet the importance.
Used in conjunction with an LM, a complete video chan- nel from monitor input to CRT cathode can be achieved. Figure 12 shows the routing and component placement from pin 1 of the LM to the blue cathode. This board provides a good example of a layout that can be used as a guide for future layouts.
Ferrite core inductors from J. The fall time shows a.
This minimizes parasitic capacitance in the video path and also enhances the effectiveness of the pro- datazheet diodes. Increasing the value of L1 will speed up the circuit as well as increase overshoot.
Using vari- able resistors for R1 and the parallel resistor will simplify finding the values needed for optimum performance in a given application. This example assumes a capacitive load of 8 pF and no re- sistive load.
LM vs Frequency when all three channels of the device. Figure 10 is the sche. The schematic of the board is shown in Figure To prevent this, leads to the video amplifier input circuit should be shielded, and input cir- cuit wiring should be spaced as far as possible from output circuit lm243t.
dataaheet See Thermal Considerations section. Used in conjunction with an LM, a complete video chan. The IC is packaged in an industry standard 9-lead TO molded plastic power package. The val- ues shown in Figure 9 can be used as a good starting point for the evaluation of the LM Also, the length of the. This is done to minimize the length of the video path between these two components.
LMT Hoja de datos ( Datasheet PDF ) – Monolithic Triple ns CRT Driver
Semiconductor Application Note This example assumes a capacitive load of 8 pF and no re. The anode of protection diode D14 is con. Figure 8 shows the effect of increased load capacitance on. Referring to Figure 9there are three components R1, R2. The LM case temperature must be maintained below. The diode placement and routing is very important for minimizing the voltage 5 www. Once the optimum values are determined the variable resistors can be replaced with fixed values.
This graph gives the designer the information needed to determine the heat sink requirement for the appli- cation.