Pinout, function and internal block diagram of the LA4102

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The following is a circuit diagram of [LA4102 pinout, function and internal block diagram]

The pinout of the LA4102 is shown in Figure 1. It is a 14-pin dual in-line plastic package with a heat sink with pins that are numbered counterclockwise from the top of the heat sink.

Figure 1 LA4102 package outline and internal block diagram of each pin function is as follows:
1 output; 2 grounding; 4, 5 damping; 6 inverting input; 9 non-inverting input; 10, 12 decoupling filtering; 8 common emitter potential; 13 connected bootstrap capacitor; 14 positive power supply; , 11 empty feet.
The internal block diagram of LA4102 is shown in Figure 1. It mainly includes the following parts: the input stage is a differential amplifier circuit; the excitation stage is a high-gain common-emitter amplifier circuit; the output stage is a quasi-complementary symmetrical circuit composed of a composite tube; Provides a stable bias current. In the figure, the R=20kΩ resistor is the feedback resistor set inside the integrated circuit. In practical applications, the amplifier voltage amplification factor can be changed by changing the size of the external resistor connected to the 6 pin. (Editor: Circuit Diagram)

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