lm2432 National Semiconductor Corporation, lm2432 Datasheet
lm2432
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lm2432 Summary of contents
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... Monolithic Single Channel 37 MHz HDTV CRT Driver General Description The LM2432 is a single channel high voltage CRT driver circuit designed for use in Rear-Projection and Direct-View HDTV applications. The IC contains a high input impedance, wide band amplifier which can be DC coupled to a cathode of a CRT. The amplifier has its gain internally set to − ...
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... Note 3: All voltages are measured with respect to GND, unless otherwise specified. Note 4: Linearity Error is the variation in DC gain from V < Note 5: Input from signal generator ns. Slower inputs to the LM2432 will change the transient response characteristics and reduce power dissipation Note – ...
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... Figure 3 shows a typical test circuit for evaluation of the LM2432. This circuit was designed to test the transient response of the LM2432 in a 50Ω environment without the use of an expensive FET probe. On the input side, a 50Ω pulse generator output can be AC coupled and biased with an external supply via the V divider with the 50Ω ...
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... Typical Performance Characteristics − 190V), Test Circuit - Figure 3 , unless otherwise specified) FIGURE OUT FIGURE 5. LM2432 Pulse Response FIGURE 6. Bandwidth www.national.com (V = +220V 20137704 FIGURE 7. Speed vs Load Capacitance IN 20137723 20137720 FIGURE 9. Speed vs Case Temperature 4 = +12V pF 110V BB L OUT ...
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Typical Performance Characteristics − 190V), Test Circuit - Figure 3, unless otherwise specified) (Continued +220V FIGURE 10. Power Dissipation vs Frequency FIGURE 11. Power Derating Curve FIGURE 12. Cathode Pulse Response 5 = +12V ...
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... The part is housed in a staggered 7-lead TO-220 molded plastic power package. The circuit diagram of the LM2432 is shown in Figure 2 . The PNP emitter follower, Q5, provides input buffering. Q1 and Q2 form a fixed gain cascode amplifier with resistors R1 and R2 setting the gain at − ...
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... TV applications. The band- width of the input source used to drive the LM2432 was over 300 MHz. Using a RGB video processor or preamplifier with less bandwidth may cause the LM2432 to dissipate less power than shown in Figure 10 at the same conditions ...
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... RGB processor data sheet or contact your local National Semiconductor Sales Office with your specific application requirements. Feedback Topologies RGB processors that use voltage feedback require the LM2432 IK current to be converted to voltage via a resistor ( ground. This IK voltage will be fed back to the IK IK ...
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... RGB proces- PROT sor input and LM2432 IK output in this case. Again, it may be necessary for the RGB processor to have IK leakage com- pensation for the leakage current attributed to the zener. See a simplified current feedback interface circuit in Figure 15. ...
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... Therefore, the video interface and IK feedback circuits are designed to be compatible with those original TV circuits. Referring to Figure 16 , the LM2432 IK output (pin 5) is connected to protection circuitry before the IK current signal is routed to pin 4 of connector J8. Diode D1 protects the LM2432 IK pin ...
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... Application Hints (Continued) www.national.com FIGURE 17. LM2432 Demonstration Board Layout (slightly enlarged for more detail) 12 20137713 ...
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... English www.national.com Français Tel: +33 ( 8790 NS Package Number TE07A Order Number LM2432TE 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. ...