ST’s 24bit audio DAC
28 February 2008
STMicroelectronics has released a 24bit audio DAC with playback time extender for mobile music applications.
This world-first includes ST’s PTE (playback time extender) function, (which reduces power consumption and results in extended playback time), plus on-chip power management which enables direct connection to a battery.
Providing 103dB signal-to-noise ratio through the whole audio path, the single-chip STw5210 audio solution integrates power management circuitry to simplify system design. It is available in TFBGA and VFQFPN packages and will soon be in a 2.6mm x 2.6mm WLCSP.
The new DAC meets a demand for mobile music handsets to provide higher audio quality coupled with longer playing time. Normally, an increase in quality means increased power consumption due to the additional processing required. However, the STw5210 embeds a PTE block that allows music to be played autonomously, driven by the phone’s 32kHz clock, whilst the rest of the platform is switched into a power-saving state.
For advanced multimedia smart phones, the STw5210 is also a match for the STn8810/8815 Nomadik multimedia processor family and its companion STw4810/4811 power management unit, as well as the TS4962 Class D audio power amplifier for loudspeaker outputs.
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