DESCRIPTION
The A7031 is Stereo audio power amplifier designed for demanding audio applications. It is capable of delivering 2*2.7 watt of continuous average power to a 4Ω BTL load with less than 1% distortion (THD+N) from a 5V battery voltage. It operates from 2.7V to 5.5V. To simplify audio system design, the A7031 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

Features like excellent RF-rectification immunity, higher PSRR, the advanced pop & click circuitry, a minimal count of external components and low-power shutdown mode make A7031 ideal for wireless handsets and other portable device.

PRODUCT FEATURES

• 2.7V - 5.5V operation
• Power output at 5.0V & 10% THD(4ohm load) 2.7W (typ)              
• Power output at 5.0V & 1% THD(8ohm load) 1.3W (typ)
• Integrated headphone amplifier option: 2*93mW to 32 ohm load with THD less than 0.5% during 5V supply       
• Improved pop & click circuitry eliminates noises during               
• Turn-on and turn-off transitions
• Thermal overload protection circuitry
• No output coupling capacitors, bootstrap capacitors required    
• Unity-gain stable
• External gain configuration capability
• Available packages: QFN16              
• RoHS compliant and 100% lead (Pb)-free

APPLICATIONS

• Wireless handsets
• Portable audio devices such as MP3, PMP, PDAs
• Cordless phones
• PHS phones
• PNDs, GPSs
• Digital Photo Frames
• Toys