Wolfson is claiming 122dB signal-to-noise ratio (SNR) and 85dB THD+noise from the headphone DAC in its latest audio chip for phones and tablets.
WM8998 audio system chip, which is one of the fabless Edinburgh firm’s ‘audio hubs’, also sports two (stereo) 100dB SNR Class-D speaker drivers, a 100mW 127dB SNR earpiece output driver, and three concurrent 96dB SNR microphone inputs.
The DAC supports samples rates from 8kHz to up 192kHz (24-bit), and DAC to headphone power consumption is 6.7mW.
Flexible digital routing and mixing is included to support various use cases.
For feeding audio into external audio equipment, the WM8998 includes an IEC-60958-3-compatible transmitter for S/PDIF audio inputs.
As well as taking on much all of a phone’s audio hardware duties, audio hubs are intended to off-load much of the application processor’s audio overhead. As such, this one includes a programmable equaliser, general programmable filters, and specific filters for wind noise and side tone. There is also a configurable dynamic range controller.
Linux drivers are available, and “based on the same platform as many other products in the Wolfson Audio Hub family, helping to simplify software integration by allowing customers to develop a range of products with different feature sets”, said the firm.
WM8998 is sampling now.
No data sheet was available at the time of writing.
from News http://ift.tt/1wc6SwG
via Yuichun
沒有留言:
張貼留言