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NS4168 2.5W-I2S Digital Input Mono Class D Audio Power Amplifier IC - ESOP-8
NS4168 is a mono class D audio power amplifier with I2S serial digital audio input and NCN output. It has built-in digital-to-analog converter (DAC) and multistage Class D modulator for excellent audio performance. Using the NS4168's I2S digital audio serial interface to transmit to the amplifier, the impact of the noise source on the transmitted audio can be significantly reduced. In addition, it also avoids the noise caused by the built-in audio decoding DAC of the MCU master chip, and finally obtains a higher signal-to-noise ratio and a smaller distortion degree. Its closed-loop digital input design retains the advantages of a digital amplifier while providing excellent PSRR and audio performance. Compared to other Class D architectures, the use of spread spectrum pulse density modulation enables lower EMI interference and the highest audio efficiency.