A2211

AiT Semiconductor Inc. www.ait-ic.com A2211 CLASS AB 1.25 W DIFFERENTIAL AUDIO POWER AMPLIFIER WITH INTERNAL FEEDBACK CIRCUIT DESCRIPTION FEATURES The A2211 is a fully differential audio power amplifier Fully Differential Amplifier designed for portable communication device Improved PSRR at 217Hz(VDD>3.0V): applications. 86dB(Typ.) The A2211 is capable of delivering 1.25W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V battery voltage. And operates from 2.2V to 5.5V. Power Output at 5.0V & 1% THD: 1.25W(Typ.) Power Output at 3.6V & 1% THD: 0.6W(Typ.) Ultra Low Shutdown Current: 0.01uA(Typ.) Improved Pop & Click Circuitry Eliminates A2211 features 86dB PSRR at 217Hz, improved Noise During Turn-on and Turn-off RF-rectification immunity, the advanced pop & click Transitions circuitry, a minimal count of external components and Thermal Overload Protection Circuitry low-power shutdown mode make A2211 idea for No Output Coupling Capacitors, Bootstrap wireless handsets. Capacitors Required The A2211 is unity-gain stable, and the gain can be configured by external input resistors and internal feedback resistors. Unity-Gain Stable External Gain Configuration Capability Available in MSOP8 Package The A2211 is available in MSOP8 package TYPICAL APPLICATION APPLICATION GPS, Wireless Handsets Portable Audio Devices PDA, Handheld Computer RF Audio Application ORDERING INFORMATION Package Type Part Number MSOP8 MS8 A...