Audio Amplifier optimizes battery life in portable devices.May 12, 2009 -
Model AAT5101 2.5 W Class D audio amplifier operates from 2.1-5.5 V supply voltage and delivers up to 92% efficiency and offers 0.06 µA shutdown current and 1.35 mA quiescent current. It features low noise, filterless PWM architecture and outputs 1.35 W with 8 W load and THD+N of less than 1% and 2.5 W with 4 W load and THD+N below 10%. Operating across -40 to +85°C temperature range, it features thermal and short circuit protection circuitry with self-recovery.
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Original Press release
Advanced Analogic Technologies Inc.
830 E. Arques Ave.
Sunnyvale, CA, 94085
USA
AnalogicTech's First Class D Audio Amplifier Extends Battery Life in Portable Applications
Extremely Low Standby, Quiescent Current, 2.1V Operation Save Power
SANTA CLARA, Calif., April 29 / / - Advanced Analogic Technologies, Inc. (AnalogicTech(TM)) (NASDAQ:AATI), a developer of power management integrated circuits, announced today its first Class D audio amplifier. Building on the company's extensive experience building power management ICs for portable applications, the AAT5101 2.5W Class D audio amplifier delivers dramatic power savings by combining low voltage operation with low quiescent current and standby current an order of magnitude below competitive devices.
"While the Lithium-ion batteries currently used in most portable systems today shutdown at 2.5V, a new generation of batteries coming onto the market are designed to operate at much lower voltages," says CJ Zhang, product line vice president. "By supporting operation down to 2.1V and offering very low quiescent and standby current, the AAT5101 offers designers of cell phones, notebooks, GPS and navigation devices an opportunity to significantly reduce power requirements and extend battery life."
Reduced Operating Voltage
This new mono class D audio power amplifier operates across a wide 2.1V to 5.5V supply voltage making it ideal for systems using next generation low voltage Li-ion/polymer batteries. To further extend battery life, the audio amplifier delivers up to 92 percent efficiency and offers a very low 0.06 uA shutdown current and 1.35 mA quiescent current.
The AAT5101 outputs 1.35W with an 8 Ohm load and THD+N < 1 percent and 2.5W with a 4 Ohm load and THD+N < 10 percent. Its low noise, filterless PWM architecture simplifies system design by eliminating the output filter, reducing external component count and system cost. To ensure clean sound across the entire audio output range, the AAT5101 delivers 0.12% THD+N at 5V with 8 ohm load and P(out) = 1.0W. PSRR is -60 dB typical, while SNR is 91 dB typical.
The new audio amplifier also features integrated thermal and short circuit protection circuitry with self-recovery to protect the device from damage during over current conditions. Proprietary circuitry effectively suppresses pop and click noise.
Price and Availability
The AAT5101 is qualified across the -40 C to +85 C temperature range. The new audio amplifier is available in compact 9-pin wafer-level chip scale packaging (WLCSP) and sells for $0.28 in 1K quantities.
About AnalogicTech
Advanced Analogic Technologies, Inc. (AnalogicTech) is a supplier of Total Power Management(TM) semiconductor solutions for a variety of consumer, communications, and computing systems. The company focuses its design and marketing efforts on the application-specific power management needs of such devices as mobile handsets, smart phones, digital cameras, netbooks / notebooks, personal navigation systems, and wireless LANs. AnalogicTech also develops and licenses device, process, package, and application-related technologies. AnalogicTech is headquartered in Santa Clara, CA and Macau, S.A.R., with offices in China, Hong Kong, Taiwan, Japan, Korea, and the U.K., as well as a worldwide network of sales reps and distributors. The company is listed on NASDAQ under the symbol AATI. For more information, please visit www.analogictech.com. (AnalogicTech - G)
AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.
Source: Advanced Analogic Technologies, Inc.
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