TBA820 Amplifier
The audio amplifier described is designed for efficient performance in compact applications, utilizing an 8-pin Dual In-Line Package (DIL). The low minimum supply voltage of 3V allows for its use in battery-powered devices, making it suitable for portable audio equipment. The low quiescent current ensures that the amplifier consumes minimal power when idle, enhancing battery life in mobile applications.
The amplifier's ability to reject ripple is critical for maintaining audio fidelity, particularly in environments with significant electrical noise. This feature is achieved through careful design of the power supply rejection ratio (PSRR), which allows the amplifier to maintain stable performance across varying supply conditions.
Crossover distortion is a common issue in class AB amplifiers, where non-linearities can occur during the transition between the positive and negative halves of the audio signal. This amplifier's design minimizes such distortion, resulting in clearer sound reproduction, particularly at low signal levels.
Power dissipation is another important consideration, especially in compact designs where heat management can be challenging. This amplifier is engineered to operate with low power dissipation, which not only improves efficiency but also reduces the need for extensive heat sinking.
Regarding the maximum supply voltages, the amplifier can handle a maximum of 16 volts when driving a 16-ohm speaker, which is suitable for higher power applications. For an 8-ohm speaker, the maximum supply voltage is 12 volts, and for a 4-ohm speaker, it is 9 volts. This flexibility allows the amplifier to be used in a variety of speaker configurations while ensuring optimal performance without risking damage to the IC.
Overall, this audio amplifier represents a versatile solution for various audio amplification needs, combining low voltage operation, efficient power management, and high-quality sound reproduction in a compact package.A very useful audio amp in an 8-pin DIL package. The IC features a very low minimum working supply voltage of 3V, low quiescent current, good ripple rejection, no crossover distortion and low power dissipation. Maximum supply voltages is 16 Volts into 16 Ohms speaker, 12Volts into 8 Ohms and 9Volts into 4 Ohms. 🔗 External reference
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