MAX9813HEKA+T Datasheet/PDFLinear - Amplifiers - Audio
The MAX9813HEKA+T is a high efficiency, Class D, mono amplifier capable of delivering up to 4 watts of audio output. The MAX9813HEKA+T provides high power with low power dissipation and is suitable for use in portable audio applications such as cell phone hands-free, portable CD players, portable audio amplifiers and other battery-powered products.
The MAX9813HEKA+T is designed to be used in audio applications that require a high degree of efficiency and excellent audio performance. The device is a three-stage amplifier composed of an input stage, a pre-amplifier stage, and a power stage. It integrates an amplifier, temperature protection, auto-level control, and shut down circuit.
The input stage of the MAX9813HEKA+T consists of an input buffer and resistor ladder network used to set the gain and level shift the signal. The pre-amplifier stage serves to reduce the amount of noise that enters the power stage. The power stage is the Class D amplifier integrated circuit, which converts the signal from the pre-amplifier to a higher power level with excellent efficiency.
The Class D amplifier in the power stage consists of a pulse-width modulator and constant current sources. The pulse-width modulator is responsible for generating the high-frequency pulses that are applied to the powerstage’s output transistors. The constant current sources serve to ensure that the pulse-width modulator is supplied with constant current, providing consistent power delivery.
The MAX9813HEKA+T is designed for use in a variety of audio applications. It provides high performance in battery-powered applications, where efficiency is essential. In addition, the device is capable of delivering up to 4 watts of output power with low power dissipation, making it suitable for high-performance portable audio applications.
The device includes a variety of features to enhance its performance, such as temperature protection and auto-level control, that protect the amplifier from excessive temperature and current levels, respectively. In addition, the device also includes a shutdown circuit for situations where the device is not in use.
In conclusion, the MAX9813HEKA+T is designed for use in a variety of audio applications. It provides high efficiency and excellent audio performance, making it suitable for high-performance portable audio applications. The device includes a variety of features, such as temperature protection and auto-level control, to ensure its long life and efficient operation.