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The AS3543 is the latest in a complete line of austriamicrosystems integrated audio and power management devices. The series integrates all of the system simulation capabilities required for digital system-on-chip (SoC) for mobile entertainment products on a single chip. Austin Microelectronics is dedicated to the versatile single-chip matching analog devices required for increasingly complex mobile SoC processors, which can reduce board space and reduce overall BOM cost while improving performance compared to discrete components.
The AS3543 is a flexible and highly integrated audio and power management device that includes a low-power stereo audio DAC with ADC for line audio output and input, a microphone input, headphone amplifier with direct drive capability, lithium-ion and other general-purpose batteries Charger, high efficiency DC/DC step-down power converter, LDO, ultra low power RTC, battery switch and high voltage backlight power unit. DC/DC converters support dynamic core power management techniques to help increase the efficiency of various current loads.
Handheld entertainment devices are connecting a car speaker system or a home speaker accessory through a dock, and portable devices are beginning to replace traditional home or car entertainment HiFi. In both environments, the AS3543 utilizes its unique features to significantly reduce the background noise generated by a Class D amplifier in a car engine or high current switching speaker base. A playback device using this technology can achieve a typical gain of 3dB SNR.
Austriamicrosystems will present its current and next-generation integrated audio and power management products at the 2008 Consumer Electronics Show booth in Las Vegas.