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LM2878P Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LM2878P Datasheet(HTML) 5 Page - National Semiconductor (TI) |
5 / 8 page Connection Diagram Single-In-Line Package TLH7934 – 5 Top View Pin 6 must be connected to GND Order Number LM2878P See NS Package Number P11A Application Hints The LM2878 is an improved LM378 in typical audio applica- tions In the LM2878 the internal voltage regulator for the input stage is generated from the voltage on pin 1 Normally the input common-mode range is within g07V of this pin 1 voltage Nevertheless the common-mode range can be in- creased by externally forcing the voltage on pin 1 One way to do this is to short pin 1 to the positive supply pin 11 The only special care required with the LM2878 is to limit the maximum input differential voltage to g7V If this differ- ential voltage is exceeded the input characteristics may change Figure 2 shows a power op amp application with AV e 1 The 100k and 10k resistors set a noise gain of 10 and are dictated by amplifier stability The 10k resistor is boot- strapped by the feedback so the input resistance is domi- nated by the 1 MX resistor TLH7934 – 6 FIGURE 2 Operational Power Amplifier AV e 1 5 |
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