•  
• EDN Europe MAGAZINE
•  
• Free SUBSCRIPTION
• Subscription Renewal
• View Media Kit

• EDN
• EDN Australia
• EDN Asia
• EDN China
• EDN Japan

Stereo headphone amplifier eliminates clicks and pops

Maxim Integrated Products has introduced the MAX9820, a stereo headphone amplifier designed for portable multimedia devices. This IC employs the company’s DirectDrive architecture to eliminate clicks and pops and the large output-coupling capacitors required by single-supply headphone amplifiers. The device suppresses RF radiation, preventing the amplifier from demodulating the coupled noise. This solution is suitable for cell phones, portable media players, PDAs, notebooks, MIDs (mobile internet devices) and audio applications. The device operates from a 2.7V to 5.5V single supply and delivers 95mW of output power (32Ohms, VDD = 5V). It consumes less than 1µA in shutdown mode and a low 3mA during quiescent operation. The device also integrates undervoltage lockout and protection against thermal overload and short-circuit events. Offered in a space-saving 3x3x0.8mm, 10pin TDFN package, the device is fully specified for operation over the -40°C to +85°C extended temperature range.