4 × 22 Watts Power Amplifier using TDA7382 - Another Electronics Circuit Schematics Diagram.

4 × 22 Watts Power Amplifier using TDA7382

ST TDA7382 is the company introduced a new type of category A and B audio power amplifier, especially in car It uses 25 feet Flexiwatt25 package, with pin-in Figure 1. Compensation and do not need an external output capacitor since the move, only a small number of RC-components can be shown in Figure 2 of the low-frequency amplifier circuit.

Power supply voltage can not exceed the maximum 18 V, quiescent current of about 150 mA. C1 ~ C4 feet were IN1 ~ IN4 the input capacitance, when the value of its electoral 0.1 μ F, low-frequency cutoff frequency amplifier for the 16 Hz. (4) (22) legs and feet are the functions of standby and mute inhibition (MUTE), if not, can be connected to the power supply Vs. (4) feet when the voltage to 1.5 V below the threshold, the amplifier off. (4) feet for low-level, the standby current amplifier only about 20 μ A. (22) feet as long as the voltage down to 1.5 V threshold, the amplifier is a mute state. (10) feet of the C6 for the supply voltage suppression (SVR), (25) feet is the function of limiting testing.

TDA7382 is overheating restrictions, open ground, electrostatic discharge (ESD) and short-circuit protection, the largest peak output current of 4.5 A, the output offset voltage of not more than 100 mV, total harmonic distortion THD typical is 0.04 percent, output noise voltage CN0 typical value is 65 μ V, in VS = 14.4V, f = 1kHz and THD = 10% and RL = 4 Ω, each channel output power is 22 W.

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