LM2439T DATASHEET PDF
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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The following references are lk2439t This example assumes a capacitive load of 8 pF and no re. Increasing the values of R1 and R2 will slow the circuit down while decreasing over- shoot.
Monolithic Triple 9.5 Ns CRT Driver [Obsolete]
A typical application of the LM is shown in Figure Figure 12 shows the. The IC is packaged in an industry standard 9-lead TO The NSC demo board also has a position open to add dataheet resistor in parallel with L1. Per- formance is ideal for x resolution displays with pixel clock frequencies up to 75 MHz.
This graph gives the designer the information needed to determine the heat sink requirement for the appli- cation. Figure 10 is the sche. Very important for arc protection. This board provides a good. The fall time shows a.
National Semiconductor LM Series Datasheets. LMT, LM Datasheet.
Tab is at GND. Once the optimum values are determined the variable resistors can be replaced with fixed values.
It is very important to use induc- tors with very high self-resonant frequencies, preferably above MHz. Used in conjunction with an LM, a complete video chan- nel from monitor input to CRT cathode can be achieved. MHz bandwidth then a maximum heat sink thermal resis.
The rise time shows a maximum variation relative to the cen. The designer should note that if the load capacitance is increased the AC component of the total power dissipation will also increase. The NSC demo board also. 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.
LM2439T Datasheet PDF
Increasing the values of R1. This board provides a good example of a layout that can be used as a guide for future layouts. Semiconductor Application Note This minimizes parasitic capacitance in the video path and also enhances the effectiveness of the pro- tection diodes.
This corresponds to a speed degrada. The anode of protection diode D14 is con.
LMT 데이터시트(PDF) – National Semiconductor (TI)
This demonstrates the importance. 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 wiring.
Referring to Figure 9there are datashert components R1, R2. This is done to minimize the length of the video path between these two components. Increasing the value of L1 will speed up the circuit as well as increase overshoot.
This example assumes a capacitive load of 8 pF and no re- sistive load. This resistor can be used to help control overshoot.
See Thermal Considerations section. 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.