AN5275

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Audio amplifiers generally form the basis of many audio electronics, from small, simple circuits within domestic appliances such as radios and hi-fis to more complex sound reinforcement systems in public and professional venues. The AN5275 is a dual audio power amplifier IC manufactured by NEC, primarily for use in hi-fi applications. It is suitable for the amplification of typical audio frequencies, and can provide power outputs of up to 2 x 12W, or 4 x 4W to 4 ohm speakers.

The AN5275 is a dual audio power amplifier IC manufactured by NEC, primarily for use in hi-fi applications. It has two channels, each capable of providing up to 2x12W or 4x4W power output to 4 ohm speakers. The AN5275 operates in bridge or parallel connection, and is suitable for the amplification of typical audio frequencies, due to its wide frequency response, low distortion and high S/N ratio. The IC is largely noise-free and has a robust overload protection circuit for increased safety and reliability.

The pinout of the AN5275 is as follows.OUT1 and OUT2 are the channel outputs on the left channel, connected to the speaker. VCC is the power supply voltage, typically 5V -15V. GND is the ground pin. IN1, IN2, IN3, and IN4 are the input pins, which are connected to the signal source. CAP1 and CAP2 are feedback pins, which are used to decrease the gain of the amplifier.

The working principle of the AN5275 is as follows. First, the signal from the signal source is inputted to the IC through the input pins. This signal is amplified by the IC, and passed to the speaker through the output pins. The signal then passes through the feedback pins before the amplified signal is fed back to the input pins. This feedback controls the gain of the amplifier, regulating the signal from becoming too loud or too quiet.

The capability of the AN5275 to provide up to 2x12W or 4x4W power output makes it ideal for consumer products such as radios, hi-fis and sound reinforcement systems. Its wide frequency response, low distortion and high S/N ratio also mean that it can easily and efficiently amplify typical audio frequencies. Furthermore, its noise-free operation and overload protection circuit make it a reliable and safe solution for audio amplification. Therefore, the AN5275 is an excellent choice for audio amplification applications.

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