ST-Ericsson has launched a high-quality audio digital-to-analog converter (DAC) for the mobile music market that improves handset battery life performance.
The STw5211 DAC combines ST-Ericsson's innovative Playback Time Extender (PTE(TM)) processing technology with 102 dB signal-to-noise ratio through the whole audio path, allowing OEMs to build music phones with the highest levels of audio quality and double today's typical 10-hour playback time.
Available as a single-chip solution in an ultra-small, wafer-level chip scale package (WLCSP), STw5211 claims to be the market's most integrated and cost-effective audio solution to boost playback time.
Volume production of STw5211 is planned for August 2009, with samples available in April 2009.
STw5211's high level of integration is achieved by using leading-edge 0.13-micron analog CMOS process. The only single-chip solution of its kind, STw5211 operates with a minimal bill of materials (BOM) in a tiny 2.6 x 2.6 mm WLCSP package. By incorporating the power management circuitry, the device can be directly connected to the battery with no need for external voltage regulators. Additionally, the headset amplifier is of 'true ground' type and does not need coupling capacitors.
Monica de Virgiliis, Vice President, Wireless Multimedia Group, ST-Ericsson, said: "Typically, power consumption increases as features are enhanced and quality improved; however, STw5211 with PTE technology allows music to be played autonomously while the rest of the platform is switched into a power-saving state. This results in a substantial increase in battery life without any compromise in audio quality for the consumer."
Key features of STw5211 include:
- 102 dB SNR audio quality
- Integrated PTE technology for extended playback
- 66 dB THD
- 8 to 192 kHz sample rate conversion
- 32 kHz RTC clock-only operation
- System clock generator
- Ultra-small 2.6 x 2.6 mm footprint, requiring few external components