Low-power audio codec prevents speaker damage
The DAC-to-headphone idle power consumption is only 5.6mW, which represents a 15% improvement compared to the competition and extends battery life, says the manufacturer. The chip comes in a 3.8×3.3mm wafer-level package for portable multimedia applications. It features Maxim’s proprietary FlexSound audio technology which optimizes the signal level and frequency response, while limiting the maximum distortion and power at the output. This technology improves loudspeaker performance and prevents speaker damage. The FlexSound audio technology comes with an extensive toolkit for improving loudspeaker playback performance and voice transmission. The GUI lets you evaluate and then optimize the MAX98089’s 5-band parametric EQ, automatic level control (ALC), speaker excursion limiter, speaker power limiter, and speaker distortion (THD) limiter. For applications flexibility, example software drivers are available for Linux and other OS platforms. The MAX98089 integrates a Class H stereo headphone amplifier with a dual-mode charge pump. This architecture eliminates the need for bulky output capacitors and ensures click-and-pop-free operation during turn-on, turn-off, and volume changes. Ground sense reduces the output noise caused by ground-return current. Low-EMI, stereo, Class D speaker amplifiers provide filterless operation in the amplification of two speakers.
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