Stereo Headphone Amplifier rejects RF noise.

Press Release Summary:

Designed for portable multimedia devices, MAX9820 IC employs DirectDrive® architecture to eliminate clicks and pops, as well as large output-coupling capacitors. Unit also suppresses RF radiation, preventing amplifier from demodulating coupled noise. With 2.7-5.5 V single supply, amplifier delivers 95 mW of output power. Device consumes less than 1 µA in shutdown mode and 3 mA during quiescent operation. Housed in 3 x 3 x 0.8 mm TDFN package, IC operates from -40 to +85°C.

Original Press Release:

DirectDrive® Headphone Amplifier Saves Space While Providing High RF Noise Rejection

Tiny, space-saving DirectDrive headphone amp rejects RF noise.

Maxim's latest stereo amplifier suppresses RF radiation and prevents the amplifier from demodulating the coupled noise.

SUNNYVALE, CA-November 18, 2009-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX9820, a stereo headphone amplifier designed for portable multimedia devices. This tiny IC employs Maxim's patented DirectDrive architecture* to eliminate clicks and pops, as well as the large output-coupling capacitors required by conventional single-supply headphone amplifiers. The MAX9820 also suppresses RF radiation, thus preventing the amplifier from demodulating the coupled noise. This low-cost, compact solution is ideal for cell phones, portable media players, PDAs, notebooks, mobile internet devices (MIDs), and other audio applications.

The MAX9820 operates from a 2.7V to 5.5V single supply and delivers 95mW of output power (32 W, VDD = 5V). It consumes less than 1µA in shutdown mode and a very low 3mA during quiescent operation. The MAX9820 also integrates undervoltage lockout and protection against thermal overload and short-circuit events.

Offered in a space-saving, 3mm x 3mm x 0.8mm, 10-pin TDFN package, the MAX9820 is fully specified for operation over the -40°C to +85°C extended temperature range. Prices start at $0.44 (1000-up, FOB USA). An evaluation kit is available to speed designs.

Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 6100 products serving the industrial, communications, consumer, and computing markets.

Maxim reported revenue in excess of $1.6 billion for fiscal 2009. A Fortune 1000 company, Maxim is included in the Nasdaq 100, the Russell 1000, and the MSCI USA indices. For more information, go to

*U.S. Patent # 7,061,327.

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