TA7376P dual channel power amplifier integrated circuit diagram

Filter 18.432M

TA7376P is a two-channel power amplifier integrated circuit with low quiescent current, low power on/off noise, large output power and few external components. The circuit operates from a supply voltage range of 4.5-9V and a typical operating voltage of 6V.

1. Circuit diagram and pin function in TA7373F

The internal circuit block diagram of the TA7376P integrated block is shown in Figure 1. The IC is packaged in a single-row 9-pin package. The pin functions and data of the integrated circuit are listed in Table 1.

Figure 1 Block diagram of the internal circuit of the TA7376P integrated block

Table 1 pin functions and data of TA7376P integrated circuit

2.TA7376P typical application circuit

The typical application circuit of the TA7376P integrated block is shown in Figure 2.

Figure 2 Typical application circuit diagram of TA7376P integrated block

3. Signal flow

The left and right channel audio signals are input from pins 1 and 9 of the TA7376P. After power amplification, they are sent to the lake from pins 6 and 3. The output coupling capacitor is used to drive the headphones or the speaker to sound.

In the circuit, C37 and R33, R35 and C40 are AC negative feedback circuits, R36 and C43, R37芍C44 are "Jubel" networks, and C41 is a filter capacitor.

4. Troubleshooting tips

To determine whether the TA7376P is working properly, it can be determined by detecting the voltage between the 3rd and 6th feet and the 5th pin. Normally, the voltage on these two feet should be 1/2 of the power supply voltage. If the deviation is large, the circuit is faulty.