Wolfson delivers crystal-clear audio with new ultra-low power DAC
24 June 2011
Wolfson Microelectronics plc has today announced the WM8918, its latest high performance ultra-low power stereo digital-to-analogue converter (DAC) which delivers superior audio to portable applications including mobile phones, tablet PCs, wireless headsets, multimedia players and handheld gaming devices.
The WM8918 features stereo ground-referenced headphone amplifiers, using Wolfson's Class-W amplifier and an innovative dual-mode charge pump architecture to optimise efficiency and power consumption during playback, eliminate AC coupling capacitors to reduce PCB area, BOM cost and also improve bass response.
The WM8918 also features Wolfson's SilentSwitch™ technology which minimises audible pops and clicks and shortens software driver development. The integrated dynamic range controller provides compression and level control to enhance the playback experience. It can also be used to ensure high quality record performance when used to process signals captured by the on-chip digital microphone interface. The WM8918 also features Wolfson's ReTune™ Mobile 5-band parametric equaliser with fully programmable coefficients to optimise speaker characteristics and further enhance the playback experience.
With 3.8mW quiescent power consumption for DAC to headphone playback and a DAC signal-to-noise ratio of 96dB typical, the WM8918 can operate directly from a 1.8V switched supply. The digital core can also be operated from a 1.0V supply for optimal power consumption.
David Brown, Product Line Manager for Amplifiers and Convertors at Wolfson Microelectronics, said:
"With a range of innovative features, and the ability to deliver crystal-clear audio and ultra-low power consumption, the WM8918 represents the ideal solution for a wide range of today's world-leading portable audio applications."
More information Wolfson Microelectronics