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Chip integrates power management, audio features

Posted: 20 Feb 2008 ?? ?Print Version ?Bookmark and Share

Keywords:power management? audio features? DAC?

austriamicrosystems has announced the launch of its AS3658 integrated power and audio management unit with sophisticated audio features. The AS3658 is suitable for portable navigation devices, portable media players, smart phones, PDAs and a wide range of other battery-powered handheld devices.

The new device offers an integrated solution for power supply generation, monitoring and battery management including charging. The charger can manage up to 1.6A charging current, suitable for fast charging of large batteries. USB, linear and step-down charging is available and supported by the unique battery isolation feature. The programmable power management functions of the AS3658 extend battery life with DC/DC efficiencies higher than 90 percent, the company said.

The product provides three highly efficient DC/DC step-down converters, two DC/DC step-up converters, three low-noise LDOs suitable for RF applications, four digital LDOs, a low-noise charge pump and a highly flexible backlight driver supporting a wide range of display sizes.

The AS3658 also offers audio functions with an 18bit audio DAC, a 16bit audio ADC, a 5-band equalizer as well as headphone amplifiers, line-outputs, line-inputs, microphone inputs, audio mixer and several analog and digital audio interfaces. The device's ground noise cancellation feature delivers high sound quality in in-car environments. Moreover, a real-time clock, a 10bit general-purpose ADC and a touchscreen interface are integrated to complete the extensive feature set of AS3658. Due to customizable PROM programmable startup sequences, the IC matches a wide variety of application processors.

AS3658 is available in a BGA124, 8mm x 8 mm, 0.5mm pitch package and is specified for -40C to 85C ambient temperature.

austriamicrosystems is one of the exhibitors in the upcoming IIC-China 2008.

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