Cathy Zhang
Cupertino, CA (USA)
Role(s):
X-sigma
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Startup
Location:
Cupertino
Industry:
Hardware
Year Founded:
2006
Number Employees:
INVALID
Description:
4 Patents were filed on this innovative technology. This world’s first all-digital class-D audio amplifiers delivers ~90% efficiency on battery-operated portable audio devices yet does not sacrifice the quality of the sound. This innovative IP/product breaks the traditional Class-D hurdles where an external DAC and analog feedback circuitry are required in order to work. this all-digital class-D audio amplifier technology dramatically improves the power efficiency for low power portable applications. It delivers high-quality audio playback (~102dB SNR, ~85dB THD+N), high power efficiency (>90%), with excellent power-supply-rejection-ration (PSRR > 60dB). As a comparison, popular digital music player iPod uses a stand alone DAC + class-AB audio chip from Wolfson Microelectronics with specif