Nuvoton Introduces Ultra-Low-Power, Filter-Free 3.2W Class-D Audio Amplifiers

NAU82039 – New High Efficiency Device Ideal for Smart Phones, Tablets,
Docking Stations, Portable Media Players, LCD/LED TV, Toys

SAN JOSE, Calif. – Dec. 10, 2012 – Nuvoton Technology Corporation, a leading worldwide provider of semiconductors for consumer and computing applications, today introduced the NAU82039, a family of new Class-D audio amplifiers designed to optimize portable consumer devices. The new Nuvoton NAU82039 features high-efficiency mono, analog-input 3.2W Class-D power amplifier with 12dB of fixed gain – ideal for mobile consumer electronics such as smart phones, tablet PC, docking stations, portable audio and video players, GPS/Navigators, LCD and LED TVs, and toys.

"Lowering both power and noise are essential in the fast-moving, highly competitive market for consumer and portable devices,” said Jae-Hong Oh, senior product marketing manager at Nuvoton. “Our engineers, therefore, spearheaded an intensive effort to define a new generation of Class-D amplifiers – the NAU82039 – designed to address the market’s need for power consumption and reduced switching noise, while delivering an array of other experience-enriching features.”

The NAU82039 mono Class-D audio amplifier sets a new standard in audio amplifiers by offering an ultra-low quiescent current (1.25mA at 3.6V) for output power delivered, allowing the device unparalleled for the portable applications where battery life represents a significant differentiating factor. This new amplifier’s inputs can be configured in either single-ended or differential mode.

Superior EMI Performance, Filter-free
The NAU82039 amplifier does not need an external output filter, as each reduces electromagnetic interference (EMI) through spread-spectrum-oscillator technology and slew-rate control. Moreover, the NAU82039 provides improved immunity and power supply rejection ratio, or PSRR, of > 90dB at 217Hz, making the devices ideal Class-D audio amplifiers for wireless and AM frequency band applications.

Leap Forward in Efficiency, Power
The Class D topology represents a significant leap forward in both power efficiency and noise minimization in audio devices. Class D amplifiers generate a square wave, making the wave-form binary so that it can be amplified by switching the power devices. The power efficiencies of Class D amplifiers are two-thirds better than those of Class AB devices. 

The Class D NAU82039 is capable of driving a 4Ω load with up to 3.2W output power, and features a chip-enable pin for extremely low standby current and fast start-up time of 4ms.

For more information on the new NAU82039 Class D amplifier, along with Nuvoton’s entire line of audio amplifiers, go to Audio Amplifiers.

Availability, Pricing
The NAU82039 is available now in Miniature WLCSP-9 (1.21mm x 1.23mm in 0.4mm pitch) package and priced at $0.20.

About Nuvoton Technology
Nuvoton Technology Corp. was established as a spin- off of Winbond Electronics’ Logic business group, starting operation in July, 2008 and IPO in September, 2010. Nuvoton Technology focuses on the R&D and sales in logic ICs, and leads in market shares of speech ICs, Microcontrollers, computer and cloud related application ICs. Nuvoton owns a six-inch wafer fab, featuring in special niche process. Besides in-house IC products, the wafer fab also provides part of its capacity for foundry services. Nuvoton Technology provides high cost performance products for its customers by means of flexible technology innovation capabilities, full product solutions and excellent integration of technology synergy. Nuvoton offers superior services based on existing solid foundation and continues to realize its vision: "Be an indispensable partner to industry leaders." Nuvoton values the long-term relationship with its partners and customers; the company has established subsidiaries in the USA, China and Israel to strengthen regional customer support and global management. For more information, please visit www.nuvoton.com.

*Note: Nuvoton is a registered trademark of Nuvoton Technology Corp. All other trademarks and copyrights mentioned herein are the property of their respective owners.

Product Contact: 
Jae-Hong Oh, 
Sr. Product Marketing Manager
Nuvoton Technology Corp. America
Email: jhoh1@nuvoton.com
Tel: +1-408-474-1638

News Contact:
Grace Chen
Marketing Communication Department
Nuvoton Technology Corporation 
Email: wjchen0@nuvoton.com
Tel: +886-2-26588066 ext.1745