AN7161N

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AN7161N Application Field and Working Principle

The AN7161N is an integrated audio power amplifier designed to drive two low impedance speakers. It is typically used in two-channel audio applications such as car audio, home stereos and portable music players. The AN7161N is a class B amplifier, meaning it has two complimentary transistors working simultaneously to amplify the input signal. The primary power supply is typically 4.5 V to 15 V, and its quiescent current drain varies from 10 mA to 60 mA depending on the power supply voltage.

AN7161N Application Fields

The AN7161N is an audio power amplifier designed for use in two-speaker systems, such as in car audio, home stereos and portable music players. It is designed to drive low impedance speakers, such as those typically found in car audio systems. It is also suitable for small to mid-power applications, such as speakers in home audio systems and portable music players.

AN7161N Working Principle

The AN7161N is a class B amplifier, which means it uses two complimentary transistors working together to amplify the input signal. The output section is made up of two complimentary power transistors, operating in class B, meaning they amplify signals by flipping between fully on (saturation) and fully off (cutoff). The output power of the amplifier depends on the bias voltage and quiescent current of the power supply. The output power can be controlled by adjusting the bias voltage, and the quiescent current can be adjusted to limit the output power.

The AN7161N is designed with built-in protection circuitry to prevent damage from short circuits and overheating. It also has a current limiting circuit that prevents excessive current from being drawn when the output power is too high. The output stage also includes a thermal shutoff circuit that disconnects the output stage when it reaches a certain temperature.

Conclusion

The AN7161N Amplifier is a widely used audio power amplifier designed for use in two-speaker systems, such as in car audio, home stereo and portable music players. It is a class B amplifier, and is designed to drive low impedance speakers, with output power that can be adjusted by setting the bias voltage and quiescent current. The AN7161N is also designed with protection circuitry to prevent it from damage due to short circuits and overheating.

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