21ic News Wolfson Microelectronics Co., Ltd. announced that it has launched its latest high-performance, ultra-low-power stereo digital-to-analog converter (DAC) WM8918, which brings outstanding audio to mobile phones, tablets, and wireless headphones. , portable applications such as multimedia players and handheld gaming devices.
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Featuring a stereo ground-referenced headphone amplifier, the WM8918 features Wolfson Class W amplifiers and an innovative dual-mode charge-pump architecture to improve performance and power consumption during playback, reducing board requirements by eliminating the need for AC-coupling capacitors Area, raw material cost and improved bass response.
Wolfson's SilentSwitchTM technology is another feature of the WM8918 that minimizes audible power-up blasting and reduces software driver development time. An on-chip integrated dynamic range Controller provides compression and level control to enhance the playback experience. High quality recording performance can be ensured when it is used to process signals captured by the digital microphone interface on the chip. The WM8918 also features Wolfson's ReTuneTM mobile five-band parametric equalizer with fully programmable coefficients to optimize speaker characteristics and further enhance the playback experience.
The device requires only a 3.8mW of static power to achieve digital-to-analog conversion of headphone playback, with a typical digital-to-analog conversion signal-to-noise ratio of 96dB. The WM8918 can be powered directly from a 1.8V switching power supply, and the digital core can also be powered from 1.0V for optimum power consumption.
David Brown, product line manager for Wolfson Microelectronics Amplifiers and Converters, said: "With its range of innovative product features, as well as the ability to provide clear-cut audio and ultra-low power consumption, the WM8918 represents the world's leading and diverse The ideal solution for a range of portable audio applications."
Samples of the WM8918 are available now in a 32mm QFN package measuring 4mm by 4mm.
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